COMPILATION OF PRECAMBRIAN ISOTOPIC AGES
IN NEW MEXICO
bY
Paul W. Bauer and Terry R. Pollock
New Mexico Bureau of Mines and Mineral Resources
Open-File Report 389
January, 1993
New Mexico Bureau of Mines and Mineral Resources
Socorro, New Mexico 87801
Table of Contents
Introduction
.
Acknowledgments
1
.
4
Figure 1. Map of New Mexico showing exposures of Precambrian rocks,
and mountains and physiographic provinces used in database
5
Table A. Geochronology laboratories listed in database,
with number of determinations .
Table B. Constants used for age recalculations
Figure 2. Histograms of isotopic ages
.
Figure 3. Graph of igneous rocks which have U-Pb zircon plus Rb-Sr,
K-Ar, or @ArP9Arage determinations .
Part I. List of isotopic age determinations by isotopic method
a. U-Pb
ages
.
9
16
c. Rb-Srages
.
21
d. K-Arages
.
38
e. Ar-Arages
.
42
f. Sm-Nd, Fission-track, Pb-alpha, and determinations
of uncertain geochronologic significance
45
Part 11. Comprehensive list of all isotopic age determinations
withcompletedata
listing
.
Part
.
9
.
b.Pb-Pbmodelages
8
III. List of isotopic age determinations by mountain range
Part IV. List of isotopic age determinations by rock unit
.
48
94
102
Part V. List of isotopic age determinations by county
114
Part VI. References
121
.
Appendix 1. List of areadesignations by county
.
127
1
Introduction
This compilation contains information on 350 published and unpublished radiometric ages for
Precambrian rocks of New Mexico. All data were collected from original references, entered into a
REFLEX database, and sorted according to several criteria. Based on author’s descriptions, samples
were located as precisely as possible on 7.5’ topographic quadrangle maps, which are on file at the
New Mexico Bureau of Mines and Mineral Resources.
Data are sorted in several ways. Part I will probably be the most useful cross index for most
users; it lists all ages chronologically according to isotopic method. Part I1 contains all of the data for
each of the determinations. Parts 111, IV, V, and VI are specialized cross indices that can be useful
for certain kinds of searches (mountain range, rock unit name, and county).
Figure 1 is a map of New Mexico showing the distribution of Precambrian rocks, and the
mountain ranges and physiographic provinces used in the database. Figure 2 contains histograms of
ages according to isotopic system, constructed by QUA’ITRO PRO software. Figure 3 is a graph
showing age determinations of ten rocks which have U-Pb zircon and at least one other isotopic
system age (Rb-Sr, K-Ar, Ar-Ar).
This graph illustrates that Rb-Sr, K-Ar, and Ar-Ar ages are
typically younger than the crystallization age (U-Pb zircon age), indicating that these other isotopic
systems were reset by later thermal/metamorphic events.
In Part I, ages are listed chronologically according to isotopic method. Part la contains 69 UPb ages, almost exclusively from zircon (zircon=66; sphene=l; apatite=l; monazite= 1). Part Ib
contains 37 Pb-Pb model ages (zircon=28; sphene=4; epidote=3; galena=2). Part IC contains 185
Rb-Sr data, including both isochron and model ages. Part Id contains 42 K-Ar ages, from both
whole-rock samples and mineral separates. Part Id contains 17 new and potentially controversial
determinations based on the 40Ar-39Ar method. Part Ie contains a miscellaneous list of Sm-Nd data
and age determinations that are of uncertain geological significance. These include fission-track, Pbalpha, invalid Rb-Sr isochron ages, single point model ages, and K-Ar determinations plagued by
excess Ar. These uncertain data are not included in any of the other indices.
For most applications, this format is more useful than a single chronologic list that mixes all
isotopic methods, because of the typically large differences in isotopic age of a single sample between
the various isotopic systems. For example, White (1977) calculated an Rb-Sr age of 1274k63 Ma
for the Magdalena granite, whereas Bowring et al. (1983) determined a U-Pb zircon age of 1654kl
Ma for the same pluton. Such discrepancies are characteristic of the Precambrian of New Mexico,
and it is generally agreed that in medium-grade metamorphic terrains, U-Pb zircon ages typically
record the time of crystallization of igneous rocks, whereas the Rb-Sr, K-Ar, and Ar-Ar systematics
were wholly or partially reset by subsequent thermal events.
2
Part I1 is a comprehensive master list of all of the information gathered for each age entry. It
is organized from youngest to oldest, and contains data on location, unit name, type of age (isochron,
model, plateau, etc.), isotopic method, rock type, metamorphism and deformation, material dated,
decay constant, lab used, references, and comments on the geologic or geographic setting and the
significance of the date. Each entry is denoted with a record number (from 1 to 350) that is
referenced in the cross indices in parts I, III, IV, V. The detailed information in Part I1 can be used
to check an age found in any of the cross indices. We recommend that users refer to the comments
section for questions concerning an analysis, and to check the original reference in situations where
the significance of an age is uncertain. A double-asterisk “flag” (**) following the isotopic age
indicates that, in the opinion of the authors, the significance or validity of the age is uncertain. In
many cases, this indicates that the rock has undergone a complexthermal/metamorphic history, and
the reported isotopic age may not necessarily represent a time of crystallization or metamorphism.
This is especially true for ages based on the Rb-Sr, K-Ar, and Ar-Ar systems. Many of these
indeterminate ages are included for completeness only, and should not be cited as representative of
times of crystallization, accumulation, or peak metamorphism. A number of U-Pb zircon ages by
L.T. Silver that do not contain uncertainties or precise locations are referenced as personal
communications. These ages represent data that have been presented orally at professional meetings.
In some cases, these are the only geochronologic controls available in an area.
All ages for which analytical data are available, or which were published prior to 1976, have
been recalculated using the current decay constants of Steiger and Jager (1977). Old K-Ar ages were
recalculated using the conversion tables of Dalrymple (1979). Rb-Sr data were recalculated according
to the formula b=tl .A,/A, where b=recalculated age, t,=old age, A,=old decay constant, and
&=new decay constant. Old U-Pb and Pb-Pb ages were reduced as follows to approximate new
decay constants: U-Pb: reduce by
2%; 206Pb/”8Pb: reduce by1.1%;207Pb/”sPb:reduce by 1%. 207pb-
”$Pb model ages are unaffected by decay constants.
Part 111 is a cross index that arranges dates according to location within a mountain range.
These ranges are shown in Figure 1. The range with the most listings is the Picuris Mountains, with
80 determinations. Each entry includes isotopic age, isotopic method, material dated, name of unit,
rock type, record number. Most geographic names
are from USGS maps, however several data
points from drillholes were assigned names based on geologic settings (e.g. Las Vegas basin or Pecos
slope). The Sangre de Cristo Mountains are divided into several ranges. These include the southern
Sangre de Cristo Mountains, the Rincon Range, the Cimarron Mountains, the Picuris Mountains, and
the Taos Range. Areas within the mountain ranges are loosely based on the nearest geographic
feature labelled on the 7.5’ quadrangle map. Areas include towns, mountains, canyons,
rivers, etc.
3
All areas used in the text are shown in Appendix A.
Part IV arranges ages alphabetically according to the name of the rock unit.
This includes
formal names of groups, formations, complexes, and igneous units (e.g. Vadito Group, Pecos
Complex, Sandia Granite), as well as informally named and previously unnamed units. The list also
contains the isotopic age, isotopic method, material dated, mountain range,
and rock type. Units with
published names such as the "Granite of Old Mike Peak" were inverted (e.g. Old Mike Peak Granite)
for the purpose of organizing the data alphabetically. Units without formal names were assigned
informal rock-unit names based on nearby geographic features (e.g. Kilbourne Hole xenolith). In all
cases, informal names are listed in lowercase letters, whereas formal names are in uppercase. Rocks
from drillholes are named according to the name of the drillhole (e.g. Sun No. 1 Bingham State
granite). With only minor exceptions, the rock-type designations (e.g.
granite, metarhyolite,
amphibolite) are listed as given in the original references.
Part V is a cross index by county. Of the 33 counties in New Mexico, 25 contain dated
Proterozoic rocks. This index also lists the isotopic age, isotopic method, material dated, mountain
range, rock unit, and record number. The county with the most listings is Taos County, with 104
determinations.
Part VI is a complete list of references cited in the compilation. Also included are
publications that summarize Precambrian geochronological data and that reworked earlier data.
Appendix 1 lists all of the area designations by county.
In researching this compilation, we have attempted to locate every published and unpublished
isotopic age for the Precambrian of New Mexico. Undoubtly, we have failed. However, this
database is designed to be easily updated, and we expect to periodically release new editions. If you
know of Precambrian isotopic ages that are not included in this work, please send the information to
the attention of Paul Bauer, NM Bureau of Mines and Mineral Resources, Socorro, NM 87801.
Phone:(505)835-5106.FAX:(505)835-6333.email:bauer@jupiter.nmt.edu
4
Acknowledgments
This collection was inspired by the recent publication of the Arizona Bureau of Geology and
Mineral Technology’s Compilation of Radiometric Age Determinations in Arizona by Reynolds, et al.
(1986, Bulletin 197, 258 p.). David Ward of the University of New Mexico geochronology lab
provided information on recalculating ages. Lynne Hemenway of the New Mexico Bureau of Mines
and Mineral Resources entered most of the data in REFLEX. The cheerful efforts of Gretchen
Hoffman of the New Mexico Bureau of Mines and Mineral
Resources with REFLEX and QUATTRO
PRO resulted in the tine cross indices and histograms. Sam Bowring, Mark Helper, Karl Karlstrom,
and Steve Ralser provided valuable ideas and advice.
5
Figure 1. Map of New Mexico showing Precambrian exposures, and mountains and physiographic
provinces used in database.
6
Table A. Geochronology laboratories listed in database,
with number of determinations.
Cal Tech
Carnegie Institution
Florida State
Kriti, Houston
Krueger
M.I.T.
Miami Univ.
Mobil, Dallas
U. CA, Santa Barbara
U. of Arizona
U. of British Columb
U. of Georgia
U. of Kansas
U. of TX, Austin
U. of TX, Dallas
19
12
9
1
2
11
14
5
3
20
2
17
24
25
7
6
94
30
41
3
UNC
UNM
UNM and UNC
USGS
Washington Univ.
Table B. Decay constants.
U-Pb ABS = 9.8485 x 10-'oyr-l
A, = 1.55125 x 10-loyr"
Approximations for pre-1980 Pb dates:
U-Pb concordia ares -- 2.00% reduction
238U-zo8Pb ages
-- 1.10 % reduction
235U-2"'Pb ages-- 1.OO % reduction
Rb-Sr As, = 1.42 x 10" yr"
K-Ar A,
= 0.581 x
AB = 4.962 x
yr.'
yr"
7
Figure 2. Histograms of isotopic ages. Age determinations for all graphs have been averaged over
25 million year intervals.
30
AgleAsl[
I
25
500
700
800
900
1000
1100 1200 1300 1400 1500 1600 1700 1800
1900
2000
8
Figure 3. Graph showing isotopic ages from ten igneous rocks which have U-Pb zircon ages as well
as Rb-Sr, K-Ar, and/or Ar/Ar age determinations. U-Pb zircon ages (interpreted as crystallization
ages) are typically older than ages from the other systems, indicating that the Rb-Sr, IC-Ar, and Ar-Ar
systematics have been at least partially m e t by post-crysrallization thermal/tectonic events. U = UPb zircon age. R = Rb-Sr age.
- K = K-Ar age. A, = "ArJ9Ar muscovite age. Ab = "Ar-l9Ar
hornblende&.
0
0
co
r
r
IC
0
0
0
0
(0
r
In
0
0
r
0
P
0
7
m
0
0
-
0
0
c!
0
0
r
9
PART I
List of Isotopic Age Determinations By Isotopic Method
Ia. U-Pb ages
Information on each date is displayed in the following format:
ACE AND UNCERTAINTY
MOUNTAIN RANGE
NAME OF UNlT
COMMENTS:
(**)
** = signifiesnceof age is uncensin
MATERIAL DATED
ROCK TYPE
REFERENCE
RECORD #
AREA
7.5' QUAD
Mountains
10
U-Pb
*
zircon
1427
Manzano Mountains
quartz monzonite
P r i e s t Q u a r t z Monzonite
Bauer e t al., 1992
COMMENTS: 3 points. A f o u r t h p o i n t i s n e a r - c o n c o r d a n t i n h e r i t e d
1430 *
Cimarron Range
Eagle Nest tectonic unit
COMMENTS: Nearlyconcordant.Authors
#155
Estadio Canyon area
ManzanoPeakQuad
component a t >1600 Ma.
monazite
Tolby Creek area
gt-plag gneiss
Grambling e t al., 1992
Touch-Me-Not Mtn Quad
i n t e r p r e t age as time of cooling during extension.
#159
1430 *
zircon
Tolby gneissgt-plag
Creek area
Cimarron Range
unit
Grambling e t al., 1992
Touch-Me-Not Mtn Quad
Eagle
Nest
tectonic
COMMENTS: Nearly concordant. Authors interpret
age as time of cooling during extension.
#160
zircon
1440 * 10
**
Zuni
Silver, 1984
Zuni unknown unit
COMMENTS: Location unknown. Includes foliated and u n f o l i a t e d g r a n i t e s .
#172
unknown area
Quad
1445 * 15
zircon
Big Burro Mountains
granite
Stacey and Hedlund, 1983
Burro Mtn g r a n i t e
COMMENTS: Near Co-op mine i n Gold Hill mining district. Also reported several
fractions.
Round Mtn area
Gold Hill Quad
Pb-Pb d a t e s f o r v a r i o u s s i z e
**
1448 *
P i c u r i s Mountains
Peiiasco Quartz Monzonite
COMMENTS: Age i s basedon
zircon
quartz monzonite
Bell, 1985
one point, with lower i n t e r c e p t assigned a t 55 Ma.
#176
#177
Harding mine area
Trampas Quad
Poorlyconstrained.
x*
#180
apatite
1450 T
Bootleg Canyon area
LosPinosMountains
amphibolite
Bootleg Canyon sequence
Shastri, 1993
Cerro Montoso Quad
COMMENTS: Metamorphic apatite. TWO f r a c t i o n s of a p a t i t e p l o t above theconcordia,near
1450 Ma. and a r e
s i g n i f i c a n t l y younger than the zircon and sphene ages f o r t h e same rock.
Interpreted as reheating
event a t ca. 1450 Ma. Apatites are colorless to yellow,
hexagonal o r anhedralfragmentsgenerally
larger than 100 mesh.
**
1460 *
P i c u r i s Mountains
Peiiasco Quartz Monzonite
COMMENTS: Location unknown.
*
1460
10
**
Nacimiento Mountains
monzonite
Silver,
quartz
Joaquin
COMMENTS: Location unknown.
zircon
quartz monzonite
S i l v e r , 1984
zircon
quartz monzonite
1984
#189
unknown area
Trampas Quad
#190
5 . NacimientoMtnsarea
o rG a l l i n a
Nacirniento
Quad Peak
zircon
1462 .e 67
#192
San Andres Mountains
Mineral
granite
Hill area
Mineral Hill Pluton
Roths, 1991
Bennet
Quad Mountain
COMMENTS: From L i t t l e San Nicolas Canyon. Rb-Sr whole-rock age from Mineral H
i
l g r a n i t e r e p o r t e d by U h i t e
( 1 9 7 7 ) i s 1190
161 Ma.
*
1480 z
zircon
de5 . Sangre
C r i s t o Mtns
granite
Macho Creek g r a n i t e
Robertson and Condie, 1989
COMMENTS: 0.5 km E of Picuris-Pecos fault on Macho Creek.
#207
Macho Creek area
R o s i l l a Peak Quad
**
zircon
1500 t
#221
diabase dike
Round Mountain area
Big Burro Mountains
Stacey and Hedlund, 1983
Gold Hill Quad
Burro Mtn diabase
COMMENTS: Very l i t t l e z i r c o n i n rock. Age i s h i g h l y dependent on composition of comnon Pb correction. Diabase
c u t s 1445 Ma BurroMountaingranite.Gold
Hill m i n i n g d i s t r i c t . I n c l u d e s
207/206,206/238,207/235
ages.
**
1550 f
zircon
Big Burro Mountains
s i l l - g t gneiss
Stacey and Hedlund, 1983
B u l l a r d Peak Series
COMMENTS: 2 fractionsplottoocloselytogetherformeaningfulintercepts.Includes
Blackhawk m i n i ndgi s t r i c t .
207/235 ages f o r 2 mesh sizes.
#240
B u l l a r d Peak area
Redrock NE Quad
207/206,206/238.
11
U-Pb
T
**
zircon
1585#252
Taos Range
felsic gneiss
Urraca Ranch area
Urraca Ranch gneiss
Lipman and Reed, 1989
Costilla Quad
COMMENTS: On dirt road 2.8 km SE of Urraca Ranch. L i p a n and Reed (1989)--"The significance of these ages
is
uncertain." According to S.A. Bowring (1992, personal communication) thesemay be metamorphic
zircons. Uncertainty 4 0 Ma.
1610 *
**
Florida Mountains
Florida gneiss
COMMENTS: Interpreted as minimum age
zircon
granitic gneiss
Capitol Dome area
Evans and Clemons, 1988
Capitol Dome
auad
for
emplacement. Based on 2 points. Discordant zircons.
#257
**
1621 t 15
zircon
#262
Tusas
granite
various areas
Granite
Piedras
Tres
Maxon, 1976a
auad
COMMENTS: Upper intercept age is from 7 samples from 4 different localities in Taos and Rio Arriba counties.
~~
Mountains
1630 *
**
zircon
Picuris Mountains
metadacite
area Harding mine
Cerro Alto Metadacite
B e l l , 1985
Trampas Quad
COMMENTS: Age is based on 1 point, with Lower intercept assigned at 55 Ma. Poorly constrained age.
1632 2 24
Mountains
monzonite
Andres
quartz
San
Mayberry pluton
1991
COMMENTS: Zircons are discordant.
zircon
Roths,
#269
#270
Gardner Peak area
Gardner Peak auad
1643 *
**
zircon
#274
Taos Range
Urraca Ranch area
felsic gneiss
Jarosa Canyon gneiss
Lipman and Reed, 1989
Costilla Quad
COMMENTS: In Jarosa Canyon, E of Urraca Ranch. L i p a n and Reed (1989)--"The significance of these ages is
uncertain." According to S.A. Bowring (1992, personal communication) these maybe metamorphic
zircons. Uncertainty c10 Ma.
zircon
1644 r
Taos Range
monzonite
quartz
Costilla
areaCreek
Costilla Ck qtz monzonite
Bowring et al., 1984
Latir Peak Quad
COMMENTS: Along Costilla Creek, 1.4 km NU of junction with Latir Creek. Uncertainty 4 0 Ma.
#275
1648 z 3
Lemitar Mountains
Lemitar granite
COMMENTS:
#277
zircon
granite
Bowring et at., 1983
S. Lemitar Mtns area
Lemitar Quad
1650 i 10
S. Sangre de Cristo Mtns
quartz porphyry
Dalton Canyon area
Dalton Canyon succession
auadReservoir
McClure
Fulp, 1982
COMMENTS: This rock is continuous with qtz porph. reported in Renshaw (1984) at 1660 Ma in Wild Horse Canyon.
SamDle from Wof Picuris-Pecos fault.
zircon
1650 *
granite
MtnsCristo de
S. Sangre
Indian Creek area
Indian
Creek
granite
Robertson
and Candie, 1989
Rosilla Peak auad
COMMENTS: Small pluton exposed along the Pecos River just below confluence with Indian Creek.
1650 *
**
zircon
S. Sangre de Cristo Mtns
granite
Indian Creek area
Indian
Creek
granite?
Stacey et al., 1977
Rosilla Peak Quad
COMMENTS: Reported as "relatively undeformed granites with ages of -1650 m.y." Probably from area 3 mi
Terrero.
1650 *
**
zircon
Tusas Mountains
granite
Granite
Piedras
Tres
Silver, 1984
COMMENTS: Type locality of Tres Piedras Granite. Exact location unknown.
1650 * 5
Zuni Mountains
x*
Zuni unknown unit
COMMENTS: Location unknown.
zircon
felsic schists
Silver, 1984
#279
#280
S of
#281
unknown area
auad
#282
unknown area
Quad
12
U-Pb
1653
zircon
#283
Los Pinos Mountains
granite
Sepultura Canyon area
Los Pinos granite
shastri, 1993
QuadMontoso
Cerro
COMMENTS: Fractions of this sample yielded minimum ages ranging from1630-1653 Ma. Euhedral, honey-colored
to colorless zircons. Short, stubby grains with Length:Width=l.5:1.
1
zircon
1654
Magdalena Mountains
Jordan Canyon area
granite
Magdalena Granite
Bowring et al., 1983
Quad
Magdalena
COMMENTS: Granite and fine-grainedborder facies are undeformed; country rock (ca. 1664 Ma) is highly
deformed.
#287
**
zircon
1655 t 15
Black Range
granophyre
Kingston mining dist.
Pickett Springs granite
Stacey and Hedlund, 1983
Kingston Quad
COMMENTS: Includes 2 sets of Pb/Pb and U/Pbages as well as upper intercept age.
1655 t
Zuni Mountains
Zuni felsic metavolcanics
COMMENTS:
1655
granite Zuni Mountains
Zbni granite
COMMENTS:
zircon
felsic schist
Bowring and Condie, 1982
__
#288
unknown area
Quad
zircon
#289
Bowring and Condie, 1982
1655 t 3
zircon
Losarea
Pinos Mountains
Canyon
Bootleg
granite
granite
Pinos Los
Shastri, 1993
COMMENTS: Euhedral, honey-colored to colorless zircon. Long,
1656 *
Manzano Mountains
Monte Largo Granodiorite
COMMENTS: 3 points.
11285
zircon
granodiorite
Bauer et at., Capilla
1992
unknown area
Quad
#290
Cerro Montoso Quad
slender grains with Length:Width=2-5:1.
#291
Monte Largo Can area
Peak Quad
~
~
~
~~
~~~~~~~~
1658 * 12
zircon
#292
LOS
Mountains
aplite
Pinos
dike
Bootleg Canyon area
Bootleg aplite
Canyon
Shastri, 1993
Cerro Montoso Quad
COMMENTS: Dike is oriented parallel to S2, and cuts acrossolder sheared dikes which are parallel to SI.
Zircons have long, slender habit; Lenght:Width=5:2; typically clear and light pink. Four
fractions.
1659 * 3
Chupadera Mountains
Chupadera granite
COMMENTS:
zircon
granite
Bowring et at.,
#293
S. Chupadera area
1983
Indian Well Wilderness Quad
1660 = 10
S. Sangre de Cristo Mtns
zircon
#294
Horse
porphyry
Wild
quartz
Can area
Dalton Canyon succession
Renshaw, 1984
Quad
Reservoir
McClure
COMMENTS: This qtz porphyry is contiguous with qtz porph. reported by Fulp (1982) at ca. 1650 Ma in Dalton
Canyon area. Sample from W of Picuris-Pecos fault.
1660 = 2
zircon
Los Pinos Mountains
amphibolite
Bootleg Canyon area
Bootleg Canyon sequence
shastri, 1993
Cerro Montoso Quad
COMMENTS: Metamorphic zircon. Four populations were separated; all plot on the same regression line.
taken 30 m from granitic dike
#295
Sample
**
sphene
1660 t
#296
Los Pinos Mountains
amphibolite
Bootleg Canyon area
Bootleg Canyon sequence
Shastri, 1993
QuadMontoso
Cerro
COMMENTS: Metamorphic sphene. TWO fractions of sphene yielded fairly discordant minimumages. One fraction
plotted on the 1660 Ma zircon regression line, the other plots as a slightly discordant minimum age
of 1620 Ma. interpreted as metamorphism at ca. 1660 Ma. Sphene is light, coke bottle green of
anhedral fragments Larger than 100 mesh.
13
U-Pb
1662 * 1
zircon
Los Pinos Mountains
felsic schist
Montosa Draw area
Sevilleta Metarhyolite Fm
shastri, 1993
Cerro Montoso Quad
COMMENTS: sample contained abundant, long, slender fragments of igneous zircon. Length/Uidth=3/1.
pink to honey color, with some inclusions. Four points.
1664 6 3
Masdalena Mountains
NoFth Baldy metarhyolite
COMMENTS:
zircon
metarhyolite
Bowring et al., 1983
1664 I 3
felsic
Mountains
Magdalena
Shakespeare
Can
metarhyolite
COMMENTS:
1674 * 5
Picuris Mountains
Monzonite
Quartz
Rana
COMMENTS: Lower intercept at 64
f
zircon
quartz monzonite
Bell, 1985
14 Ma.
1678 *
zircon
Taos Range
granodiorite
area
Ranch
Jaracito
Canyon
granodiorite
Bowring al.,
et
1984
COMMENTS: Along Latir Creek, 1.4 km E of gaging station. Uncertainty 4 0 Ma.
anite
Mountains
Clear
629R
.
North Baldy area
Magdalena Quad
#299
zircon
schist
Bowring
et
al., 1983
#297
Shakespeare Canarea
Magdalena Quad
#303
Harding mine area
Trampas Quad
#304
Urraca
Cerro Quad
1680 i
zircon
Picuris Mountains
feldspathic
Campground
Comales
schist
Rio Pueblo Schist
Tres Ritos Quad
Bauer, 1989, unpublished
COMMENTS: Preliminary age. Protolith of rock is uncertain: may be felsic volcanic or plutonic.
BO5
**
zircon
1680 =
Manzano Mountains
S. of Capitla Peak
feldspathic schist
sevi lletaMetarhyolite Fm
Bowring et ai., 1983
Capi l la Peak Quad
COMMENTS: Poorly constrainedage. Sample taken from outcropon road to Capilla Peak from Sevilleta
metarhyolite of Reiche (1949). Approximate Location.
#306
1684 f 1
Picuris
Puntiagudo
Granite
Porphyry
COMMENTS: Lower intercept at 48
BO7
zircon
*
Bell, 1985
Harding mine area
Trampas Quad
2 Ma.
1689 I
zircon
#309
Taos Range
granodiorite
area
Canyon
Hondo
Hondo Canyon granodiorite
Quad
Arroyo Seco
Reed, 1984
COMMENTS: From small, unnappedgranodiorite body in amphibolite along road in Hondo Canyon. May be coeval
with Jaracito Canyhon granodiorite (1678 Ma). Age is from S.A. Bowring, 1984, unpublished data.
1691 i
zircon
S. Sangre de Cristo Mtns
Pecos Baldy area
qtz-feld porphyry
Pecos Baldy quartz porphyry
Grambling
et
at., 1988
Truchas Peaks Quad
COMMENTS: Poorly exposed Hondo Group rocks appearto be intruded by this felsic porphyrystock.
#310
1699 t
zircon
#312
monzonite quartz Taos Range
Wheeler Peak area
1984
Uheeler Peak Quad
Frazierqtz
Mtn
monzonite
Bowring
al.,et
COMMENTS: E fork of Red River. Lipmanand Reed (1989) correlated this rock with the quartz monzonite of Old
Mike Peak. Uncertainty <lo Ma.
1700 *
**
Picuris Mountains
Glenwoody Formation
COMMENTS: Reported as preliminary age.
zircon
metarhyolite
Silver, 1984
Exact location unknown.
Pilar cliffs area
Carson Quad
1700 I:
**
Picuris Mountains
Rana Quartz Monzonite
COMMENTS: Location unknown.
zircon
quartz monzonite
Silver, 1984
unknown area
Trampas Quad
**
1700 r
Picuris Mountains
Puntiagudo Granite Porphyry
COMMENTS: Location unknoun.
zircon
granite
Silver, 1984
unknoun area
Trampas Quad
#313
#314
E15
14
U-Pb
**
zircon
1700 t
Tusas Mountains
metarhyolite
Burned Mountain area
Burned Mtn Formation
Quad
Caiion Plaza
Silver, 1984
COMMENTS: Exact location unknown. Barker and Friedman(1974) originally reported a 1750-1800 Ma age for
Burned Mountain Formation fromL. T. Silver, 1974. oral comnunicatian.
a16
1700 *
**
zircon
SI7
schist
feldspathic
MountainsTusas
Canada del Os0 area
Burned Mtn Formation ?
Silver, 1984
Quad
Caiion Plaza
COMMENTS: Exact location unknown. but probably represents Vadito Groupmetarhyolite, perhaps Burned Mountain
Formation.
**
~~
zircon
San Pedro Mountains
metarhyolite, granite
Zuni unknown unit
Silver, 1984
COMMENTS: Location unknown. Includes granites and metarhvolites.
1700
L
5
1718 t 5
zircon
S. Sangre de Cristo Mtns
tonal i te
Windy Bridge tonalite
Robertson and Condie, 1989
COMMENTS: On Pecos River, 2 km N of mouth of Macho Creek.
#318
San Pedro Peaksarea
Gallina or Nacimiento Peak Quad
#322
CreekMacho
area
Rosilla Peak Quad
~
1720
*
15
S. Sangre de Cristo Mtns
Jones rhyolite complex
COMMENTS: Near Jones mine.
zircon
areaquartz-eye
mine
porphyry
Jones
Robertson
and
~~
~~~
#323
Condie, 1982
Rosilla Peak Quad
1720 *
zircon
#324
feldspathic schist
Taos Range
Comanche Point area
Comanche
Point
feld.
schist
Grambling
and
Bowring, unpub.
Comanche Point Quad
COMMENTS: Sample is from metarhyolite that sits structurally beneath crossbedded quartzite. Maybe Vadito
Group equivalent? Mapped by Moench et al., 1988 as "Xgq?". Sample was processed at Washington Univ.
by M. Williams and P. Bauer.
1720 * 5
Shiprock
Shiprock xenoliths
COMMENTS: Location unknown.
zircon
gneiss, schist, granite
Silver, 1984
1730 * 130
**
zircon
San Andres Mountains
gt gneiss
Little San Nicolas gneiss
Roths, 1991
COMMENTS: Zircons aremetamict and highlydiscordant.
Ma.
#326
unknown area
Quad
#329
Goat Mountain area
Bennet Mountain Quad
Sm-Nd whole-rock of same sample has model age of 1810
1730 f
zircon
quartz monzonite
Taos Range
Columbine Ck qtz monzonite
Bowring
al.,
et
1984
COMMENTS: 5.2 km S16OE of Questa. Uncertainty 4 0 Ma.
Questa area
Questa Quad
1730 * 20
**
zircon
San Pedro Mountains
quartz monzonite
San Pedroquartz monzonite
Woodward, 1967
COMMENTS: Location unknown, but probably from NacimientoPeak area.
unknown area
Nacimiento Peak Quad
a30
#331
1741 t
zircon
#333
Taos Range
metadiorite
Gold Hill area
Hill
Gold
metadiorite
Bowring
et al., 1984
Red River Quad
COMMENTS: Sill W of Gold Hill. Lipman and Reed (1989)--"
interpreted as the emplacement age." Uncertainty
4 0 Ma.
...
1750 t
zircon
#334
Taos Range
dioritic plutons
Wheeler Peak area
Red River tonalite
Bowring and Condie, 1982
Red River Quad
COMMENTS: Reported as tonalite in Reed, 1984. NE of Frazier Mtn, along road to Middle ForkLake. Uncertainty
4 0 Ma.
**
zircon
1755 f
Tusas Mountains
unknown
quartzite
Ortega Formation
Quad
Silver, 1984
COMMENTS: All detrital fractions yielded ages less than 1755 Ma. Locations unknown.
#335
area
15
Mountains
1755
zircon
Tusas
granodiorite
Maquinita Granodiorite
Silver, 1984
COMMENTS: Location unknown. Intrusive into Moppin Complex.
U-Pb
#336
Burned Mtn area?
Quad
1765 x
zircon
#338
Taos Range
felsic metavolcanics
Gold H i l l area
Gold H i l l Complex
Bowring,
1992,
comnun.
pers.
Red River Quad
COMMENTS: NE of Gold Hill. Called "layered gneiss sequence" in Reed (1984). In Bowring et al. (1984) and Reed
(1984) this rock was reported to have apreliminary age of 1750 Ma. Uncertainty less than 10 Ma.
1780 f
**
ri PCO"
Picuris Mountains
quartzite
Pilar cliffs area
Ortega Formation
Silver, 1984
Carson Quad
COMMENTS: Exact location unknown. Reported ages between 1780-1750 Ma for detrital zircon .DoDulations.
.
MI. .I
**
zircon
1793 * 21
8842
Picuris Mountains
quartzite
Pilar area
Ortega Formation
Maxon, 1076
Carson Quad
COMMENTS: Upper intercept age is from 4 detrital samples from 2 localities. Also reports 207/206, 2071235,
206/238 ages for each o f 4 samples.
16
Ib. mPb-206Pbmodel ages
Information on each date is displayed in the following format:
AGE AND UNCERTAINTY C;*)
MOUNTAIN RANGE
NAME OF U N m
roaPb-z’rPbAGE
COMMENTS:
** = significance of age is uncertain
MATERIAL DATED
ROCK TYPE
REFERENCE
MPb-u’Pb AGE
RECORD #
AREA
7.5’OUAD
m’Pb-iuPb AGE
17
**
1375 t
zircon
Kilbourne Hole
gt granulite xenolith
Kilbourne Hole xenolith
Davis and Grew, 1978
PbZO6toU238: 360
Pb207toU235: 536
COMMENTS: Interpreted as minimum value for time of metamorphism. Zircons
discordant.
**
1430 h 20
Sandia Mountains
Sandia Granite
Pb206toU238: 1088
COMMENTS: -120 +I50mesh
zircon
quartz monzonite
Steiger and Wasserburg, 1966
PbZ07toU235: 1203
1437 I:
**
zircon
Big Burrogranite
Mountains
Burro Mtn granite
Stacey and Hedlund, 1983
Pb206taU238: 1310
Pb207toU235: 1358
COMMENTS: Near Co-op mine in Gold H i l l mining district. Mesh -250.
1437
#I 15
Kilbourne Hole area
Kilbourne Hole Quad
Pb208toU232:
are rounded, unzoned, and highly
#I58
S. Sandia Mtns area
Tijeras Quad
Pb208toU232:
~
#I62
Round Mtn area
Gold H i l l Quad
Pb208toU232:
**
zircon
granite
area
Burro Mtn granite
Stacey and Hedlund, 1983
Pb207toU235: 1312
Pb206toU238: 1238
COMMENTS: Near Co-op mine in Gold H i l l mining district. Mesh -50 +loo.
z
Pb-Pb
Big Burro Mountains
#I63
Round Mtn
Gold H i l l Quad
Pb208toU232:
~
~~~~
**
1444 =
zircon
Big Burro granite
Mountains
Burro Mtn granite
Stacey
and Hedlund, 1983
PbZObtoU238: 1320
Pb207toU235: 1367
COMMENTS: Near Co-op mine in Gold H i l l mining district. Mesh -100 +I%.
Round Mtn area
Gold H i l l Quad
Pb208toU232:
**
zircon
1449 2
Tusas Mountains
granite
Tusas Mtn granite
Wobus and Hedge, 1982
PbZ06toU238:
PbZ07toU235:
COMMENTS: Unabraded zircon. Abraded zircons give ageof 1421 Ma.
stnnnit.
Tusas Mountain area
Burned Mountain Quad
Pb208toU232:
From adit 250 m S of Tusas Mtn
**
1455 r 20
Sandia Mountains
Sandia Granite
Pb206toU238: 1157
COMMENTS: -150 +230mesh.
zircon
quartz monzonite
Steiger and Wasserburg, 1966
Pb207toU235: 1262
S. Sandia Mtns area
Ti jeras Quad
PbZ08toU232: 1125
**
1455 = 20
Sandia Mountains
Sandia Granite
Pb206toU238: 1118
COMMENTS: -230 mesh.
zircon
quartz monzonite
Steiger and Wasserburg, 1966
Pb207toU235: 1238
Sandia Mtns area
Ti jeras Quad
Pb208toU232: 1065
**
1460 E 20
Sandia Mountains
Sandia Granite
PbZ06toU238: 925
COMMENTS: +325 mesh, magnetic.
zircon
quartz monzonite
Steiger and Wasserburg, 1966
Pb207toU235: 1094
1460 .
i
20
**
Sandia Mountains
Sandia Steiger
Granite
Pb206toU238: 1098
COMMENTS: -150 +200mesh.
zircon
quartz monzonite
and Wasserburg, 1966
PbZ07toU235: 1247
#I 75
#I 78
#182
#I83
S.
#I87
S. Sandia Mtns area
Tijeras Quad
Pb208toU232: 865
#I88
S. Sandia Mtns area
Tijeras auad
Pb208toU232:
**
zircon
1465 30
#I94
Jemez Mountains
granodiorite
Fenton Hill area
GT-2 granodiorite
Quad
Springs
Seven
Zartman, 1979
PbZ06toU238: 1159
PbZ07toU235: 1271
Pb208toU232: 1159
COMMENTS: From outside W rim of Valles Caldera, Fenton Hill.
Isotopic composition of Pb
(initial) assumed to be that of microcline corrected for 1.5 Ga in situ decay.
18
1470 *
**
Sandia Mountains
Sandia Granite
Tilton
Pb206toU238: 1444
COMMENTS: +325 mesh, magnetic.
**
1470 20
sandia Mountains
Sandia Granite
Pb206toU238: 1276
COMMENTS: + 325 mesh, nonmagnetic.
Pb-Pb
sphene
granite
#I98
Sandia Mtns area
Tijeras Quad
Pb208toU232:
S.
and Grunenfelder, 1968
Pb207toU235: 1447
zircon
quartz monzonite
steiger and Wasserburg, 1966
Pb207toU235: 1346
1470 * 20
zircon
Sandia Mountains
monzonite
quartz
Sandia Granite
steiger and Wasserburg, 1966
Pb206toU238: 1276
Pb207toU235:
Pb208tM232:
1346
COMMENTS: + 325 mesh, nonmagnetic.
#199
S. Sandia Mtns area
Ti jeras Quad
Pb208toU232: 1295
#200
S. sandia Mtns area
Tijeras Quad
1295
1475 =
**
zircon
#203
Mountains
sandia
granite
unknown area
Granite Sandia
Brookins, 1974c
Quad
Pb206toU238: 1107
Pb207toU235: 1238
Pb208toU232: 1290
COMMENTS: Data from Tilton et at., 1962. Same sample (A-26) as Aldrich et ai., 1958. Zircons are clear,
hyacinth, euhedral, zoned, dark inclusions, some cores, length/breadth = 2.5. Location unknown.
**
1480 r
Sandia Mountains
Sandia Granite
Tilton
Pb206toU238: 1434
COMMENTS: +325 mesh, nonmagnetic.
sphene
granite
Grunenfelder,
and
Pb207toU235: 1441
#208
1968
S. Sandia Mtns area
Tijeras Quad
Pb208toU232:
**
sphene
1490 *
#214
Sandia Mountains
NE of Albuquerque
granite
Brookins, 1974c
Quad
sandia Granite
Pb206toU238: 1424
Pb207toU235: 1445
Pb208toU232:
COMMENTS: Data from Tilton and Grunenfelder (1968) and Aldrich et al. (1958). sample from lower part of
Sandia escarpment NE of Albuquerque.
iorite
Mountains
1500 t 25
**
sphene
#222
Jemez
Fenton H i l l area
GT-2 granodiorite
Zartman, 1979
Seven Springs Quad
Pb206toU238: 1456
Pb207toU235: 1474
Pb208toU232: 1474
COMMENTS: From outside W rim of Valles Caldera, Fenton Hill. Isotopic composition of Pb (initial) assumed to
be that of microcline corrected for 1.5 Ga in situ decay.
**
1505 *
Big Burro Mountains
Burro Mtn diabase
Pb206toU238: 1294
COMMENTS: All mesh sizes.
zircon
diabase dike
Stacey and Hedlund, 1983
Pb207toU235: 1376
#225
Round Mountain area
Gold H i l l Quad
Pb208toU232:
1518 I 210
epidote
**
#228
Jemez Mountains
granodiorite
Fenton H i l l area
granodiorite
GT-2
Zartman, 1979
Seven Springs Quad
Pb206toU238: 1214
Pb208toU232: 596
Pb207toU235: 1329
Isotopic composition of initial
COMMENTS: From outside V rim of Valles Caldera, Fenton Hill.
Pb assumed to be that of microcline corrected for 1.5 Ga in situ decay.
**
epidote
1520 = 210
#230
granodiorite
Mountains Jemez
Fenton H i l l area
GT-2 granodiorite
Zartman, 1979
Seven Springs Quad
Pb206toU238: 1255
Pb207toU235: 1357
Pb208toU232: 607
COMMENTS: From outside U rim of Valles Caldera, Fenton Hill.
Isotopic composition of initial
Pb assumed to be that of microcline corrected for 1.5 Ga in situ decay.
1542
zircon
**
Big Burro Mountains
si L 1-gt gneiss
Stacey and Hedlund, 1983
Bullard Peak Series
Pb206toU238: 1178
Pb207toU235: 1314
COMMENTS: -400 mesh. Blackhauk mining district.
#235
Bullard Peak area
Redrock NE Quad
Pb208toU232:
19
Pb-Pb
**
zircon
1554 i
Florida Mountains
C a pgi nt ogelri a
s sn i t i c
g nFeliosrsi d a
Evans and Clemons, 1988
Pb206toU238: 1127
Pb207toU235: 1283
COMMENTS: I n t e r p r e t e d as minimum age f o r emplacement. Mesh -100 +150.
Dome area
C a p i t o l Dome Quad
Pb208toU232: 1144
**
zircon
1556 t
granitic gneiss
Florida Mountains
g nFeliosrsi d a
Evans and Clemons, 1988
Pb206toU238: 1027
Pb207toU235: 1211
COMMENTS: I n t e r p r e t e d as minimum age f o r emplacement. Mesh -250 +325.
C a p i t o l Dome area
C a p i t o l Dome Quad
PbZO8toU232:
**
1567
Big Burro Mountains
B u l l a r d Peak Series
Stacey
PbZ06toU238: 1217
COMMENTS: -250 +20D
mesh.
**
1570 1:
Florida Mountains
g nFeliosrsi d a
Pb206toU238: 1128
COMMENTS: Interpretedas
#241
#242
#245
zircon
s i l l - g t gneiss
and Hedlund, 1983
Pb207toU235: 1350
Blackhawk mining d i s t r i c t .
B u l l a r d Peak area
Redrock NE Quad
Pb208roU232:
zircon
granitic gneiss
Evans and Clemons, 1988
Pb207toU235: 1289
minimum age f o r emplacement. Mesh -150
Capitol Dome area
Capitol DomeQuad
Pb208toU232: 1172
#248
+ZOO.
1583 t 220
**
epidote
granodiorite
Jemez Mountains
Zartman, 1979
GT-2 g r a n o d i o r i t e
Pb207toU235: 1428
PbZ06toU238: 1326
COMMENTS: From outside W rim of Valles Caldera,Fenton
Hill.
Pbassumed t o b e t h a t o f m i c r o c l i n e c o r r e c t e d f o r
1.5
Ga
#250
Fenton Hill area
Seven Springs Quad
Pb208toU232: 724
Isotopic composition of initial
i n s i t u decay.
**
1608 L
Black Range
Pickett Springs granite
Pb206toU238: 954
COMMENTS: +250 mesh.
z i r c~o n. ~ .
granophyre
Stacey and Hedlund, 1983
Pb207toU235:1175
Kingston mining dist.
Kingston Quad
Pb208toU232:
**
1647
Black Range
Pickett Springs granite
Pb206toU238: 1468
COMMENTS: -250 + 325 mesh.
zircon
granophyre
Stacey and Hedlund, 1983
Pb207toU235: 1554
Kingston mining d i s t .
Kinsston Quad
Pb208toU232:
1668
**
Picuris Mountains
OrtegaFormation
Pb206toU.238: 1167
COMMENTS: D e t r i t a l zircon populations.
zircon
quartzite
Maxon, 1976
Pb207toU235: 1363
P i l a r area
Carson Quad
Pb208toU232:
**
galena
1710 I
felsic schist
S. Sangrede C r i s t o Mtns
Stacey 1977
e t ai.,
Pecos mine orebody
Pb208toU232:
PbZ07toU235:
Pb206toU.238:
COMMENTS: Isochron model ages a r e computed fromthe model ofStacey
"Terrero" by Stacey et ai., 1977.
**
1713 i
Taos Range
San C r i s t o b a l q u a r t z i t e
Pb206toU238:
COMMENTS: D e t r i t a l z i r c o n p o p u l a t i o n
i n p u t during sedimentation.
1720
zircon
quartzite
A l e i n i k o f f e t at., 1985
Pb207toU235:
#2. L i g h t p i n k and euhedral.
#256
#276
so1
#320
Pecos mine area
Cowles Quad
and Kramers(1975).
This rock
was c a l l e d
#321
San Cristobal Can area
Arroyo SecoQuad
Pb208toU232:
I n t e r p r e t a t i o n = age o f v o l c a n i c l a s t i c
*x
galena
#325
Tres Lagunas area
C r i s t o Mtns
felsic metavolcanic
Tres Lagunas metavolcanics
Stacey
e t at., 1977
R o s i l l a Peak Quad
Pb208toU232:
Pb206toU238:
Pb207toU235:
COMMENTS: Isochron model ages a r e computed from the model of Stacey and Kramers (1975).
Called "Jones" by
Stacey e t at.; may be p a r t o f Jones r h y o l i t e complex.
t
S. Sangrede
20
1727 =
**
P i c u r i s Mountains
OrtegaFormation
Pb206toU238: 1240
COMMENTS: D e t r i t a l z i r c o n p o p u l a t i o n s .
zircon
quartzite
Maxon, 1976
PbZ07toU235: 1437
P i c u r i s Mountains
quartzite
Pb-Pb
#327
P i l a r area
Carson Quad
Pb208toUZ32:
- .... .
xx
1769 =
zircon
P i c u r i s Mountains
quartzite
OrtegaFormation
Maxon, 1976
Pb206toU238: 1438
PbZ07toU235:
1585
COMMENTS: D e t r i t a l z i r c o n p o p u l a t i o n s .
#337
P i l a r area
Carson Quad
PbZ08toU232:
#339
P i l a r area
CarsonQuad
Pb208toU232:
**
zircon
1775 *
TaosRange
quartzite
San C r i s t o b a l Can area
San C r i s t o b a l q u a r t z i t e
A l e i n i k o f f e t al., 1985
Arroyo Seco Quad
Pb206toU238:
PbZ07toU235:
Pb208toU232:
COMMENTS: D e t r i t a l z i r c o n p o p u l a t i o n # l . D a r k p i n k
and round. I n t e r p r e t a t i o n = age of source terrane for
quartzose sediments.
#340
21
IC. Rb-Sr ages
Information on each date is displayed'in the following format:
AGE AND UNCERTAINTY
MOUNTAIN RANGE
NAME OF UNIT
TYPE OF AGE
COMMENTS:
(**)
** = significance of age is uncertain
MATERIAL DATED
ROCK TYPE
REFERENCE
INITIAL RATIO
RECORD #
AREA
7.5' QUAD
22
I
**
626 I:
F l o r i d a Mountains
south Peak a l k a l i g r a n i t e
model
COMMENTS:
**
670
Taos Range
Comanche Point gabbro
isochron
COMMENTS: Preliminaryisochron.
**
685
Florida Mountains
South Peak a l k a l i g r a n i t e
model
COMMENTS:
*
**
685 I
F l o r i d a Mountains
South Peak a l k a l i g r a n i r e
model
COMMENTS:
**
718
P i c u r i s Mountains
Pegmatite
Brookins
Harding
isochron
COMMENTS: High scatter of data.
*
852
**
g r a n i t e a l k aMl io u n t aFi nl osr i d a
south Peak
g r aanl ikt ae l i
model
COMMENTS:
**
986 t 29
Ladron Mountains
Capirote Granite
isochron
COMMENTS: Isochron of 2 samples.
**
1013 i 242
San Andres/Oscura Mtns
Mockingbird Gap p l u t o n
isochron
COMMENTS: Isochron o f 5 samples.
~~
~~~~
Rb-sr
whole-rock
quartz syenite
Brookins, 1974b
0.70500
*
whole-rock
gabbro
Lipman and Reed, 1989
Rock i s altered. Near c o n f l u e n c e o f C o s t i l l a
1
#
2
#
3
#
4
#
5
#
7
#
12
#
14
#
15
#
16
#
17
#
18
Comanche Point area
L a t i r Peak Quad
and L a t i r creeks.
whole-rock
alkaligranite
Brookins, 1974b
0.70500
South Peak area
South Peak Quad
whole-rock
alkaligranite
Brookins, 1974b
0.70500
T
South Peak area
South PeakQuad
microcline
pegmatite
e t al.,
5.35600 E
Harding mine area
Trampas Quad
*
1979
whole-rock
Brookins,
0.70500
#
South Peak area
South Peak Quad
South Peak area
South Peak Quad
1974b
*
whole-rock
quartz monzonite
White,1977
0.71240 t 0.01580
W of Ladron Peak
Ladron Peak Quad
whole-rock
quartz monzonite
White,1977
0.71540
0.00930
Mockingbird Gap area
Quad
whole-rock
alkaligranite
Brookins, 1974b
0.70500 E
South Peak area
South PeakQuad
perthite
p e g m a t i t e p e r t h i t e zone
Brookins e t al., 1979
3.64920 t 0.00497
Harding mine area
Trampas Quad
*
~
x*
1038
F l o r i d a Mountains
South Peak a l k a l i g r a n i t e
model
COMMENTS:
**
1121 i 6
P i c u r i s Mountains
Harding Pegmatite
isochron
COMMENTS:
biotite
1128 f 44
**
orbicular granite
Sandia Mountains
al., Sandia
etBrookins
Granite
1975
0.70300 r
model
COMMENTS: B i o t i t e i s p a r t i a l l y c h l o r i t i z e d .
**
1139 *
Tucumcari b a s i n
Husky-General No. 1 g r a n i t e
COMMENTS:
whole-rock
granite
Muehlberger e t al.,
1966
Sandia Crest area
SandiaCrestQuad
E of Santa Rosa
Harben
Lake
Quad
23
**
1139 f
Delaware basin
Continental No. I - E gneiss
Rb-Sr
biotite
granitic gneiss
Muehlberger e t at.,
# 19
1966
Eunice area
Eunice Quad
COMMENTS:
1143 f 56
**
Ladron Mountains
Ladron
metavolcanic
sequence
isochron
COMMENTS: Isochron of 8 samDles.
whole-rock
f e l s i c s c h i s t & amphibolite Ladron
White, 1977
0.71070 i 0.00240
**
1175 t 15
Pajarito Mountain
Pajarito granite
feldspar
riebeckite granite
Denison and Hetherington, 1969
# 20
Peak area
Ladron Peak Quad
#
21
#
23
#
24
#
25
P a j a r i t o Peak area
Pajarito
Mountain
Quad
COMMENTS:
~
~
~~~
1183 * 62
**
P i c u r i s Mountains
Rana Quartz Manzonite
isochron
hi-feld-w.r.
granite
Fullager and Shiver, 1973
0.71880 * 0.00350
Caiioncitoarea
TramDas Quad
1185 i
S. Sangre d e C r i s t o Mtns
Embudo g r a n i t e
model
COMMENTS:
whole-rock
granite
Brookinset at.,
0.71000 2
Cordova area
TruchasQuad
**
1186 T 23
P i c u r i s Mountains
Peiiasco Quartz
Monzonite
Fullager
isochron
COMMENTS: Isochronofmineralseparates
bi-feld-w.r.
granite
and Shiver, 1973
0.70620
= 0.00070
and whole-rock.
**
1201 *
Delaware basin
Socony Mobil No. 95 g r a n i t e
K-feldspar
granite porphyry
Muehlberger e t at.,
COMMENTS:
**
1985
Rio Lucio area
Peiiasco Quad
2a
1966
Buckeye area
Buckeye Quad
1966
Hobbs area
Quad
Hobbs
West
COMMENTS:
**
1211 i
Delaware basin
s t a n o l i n d No. 11-X g r a n i t e
whole-rock
granite
Muehlberger e t at.,
#
29
COMMENTS:
**
1214 i
F l o r i d a Mountains
South Peak a l k a l i g r a n i t e
model
COMMENTS:
**
1230 i 130
S. Sangrede C r i s t o Mtns
Formation
Rinconada
min isochron
COMMENTS:
**
1243 * 170
san Andres Mountains
Mayberry Pluton
isochron
COMMENTS: Isochronof
**
1246 d 40
P i c u r i s Mountains
Harding Pegmatite
isochron
COMMENTS:
# 30
whole-rock
alkaligranite
Brookins, 1974b
0.70500
South Peak area
South Peak Quad
min. separates
pelitic schist
Ward, 1990
0.71000 i 0.22000
Pecos Ealdy area
Truchas Peak Quad
whole-rock
quartz monzonite
White, 1977
0.75120
0.01780
Mayberry Canyon area
Gardner PeakQuad
lepidolite
pegmatite
Brookinsetal.,
Harding mine area
Trampas Quad
*
*
# 31
#
33
6 samples.
# 34
1979
24
**
1247 T 62
Magdalena Mountains
Magdalena Granite
isochron
COMMENTS: Isochron of 6 samples.
**
1253 t 28
S. Sangre de C r i s t o Mtns
Rinconada Formation
isochron
COMMENTS:
*
1264
128
**
P i c u r i s Mountains
HardingPegmatite
isochron
COMMENTS:
**
1270 i
Big Burro Mountains
Burro Mtn g r a n i t e
whole-rock
granite
White, 1978
0.71600 t 0.00760
Jordan Canyon area
Magdalena Quad
whole-rock
pelitic schist
Ward, 1990
0.71500 i 0.01800
Pecos Baldy area
Truchas Peak Quad
rose muscovite
pegmatite
Brookinsetal.,
# 35
# 36
# 38
1979
Hardingminearea
Trampas Quad
biotite
gneissic granite & granite
Hedlund, 1978
Langford Mtnsarea
C Bar Ranch Quad
whole-rock
muscovite schist
Muehlberger
al., er
Dexter area
Dexter
Quad
East
# 41
COMMENTS:
**
1273 i
Pecos slope
Continental No. 1 Langfordschist
# 44
1966
COMMENTS:
**
whole-rock
1281 *
pegmatite
area
Harding
mine
spotted
rock
Picuris Mountains
Pegmatite
Balestri
Harding
and Brookins,
Trampas
1985
model
0.71000 .e
COMMENTS: Samples were c o l l e c t e d and analyzed i n l a t e 1970s.
1286
9
**
1286 i
whole-rock
rockspotted
pegmatite
Mountains
Picuris
Harding Pegmatite
B a l e s t r i and Brookins, 1985
0.71000 =
model
COMMENTS: Samples were c o l l e c t e d and analyzed i n l a t e 1970s.
**
Granite
1291 i 51
Ladron Mountains
Ladron
isochron
COMMENTS: Isochron of 7 samles.
**
1292 2
Florida Mountains
South Peak a l k a l i g r a n i t e
model
#
47
Rio Mora area
Pecos F a l l s Quad
# 48
Harding mine area
Trampas Quad
whole-rock
granite
White, 1979
0.71010 T 0.00370
North o f Ladron Peak
Ladron Peak Quad
whole-rock
a l k a l ig r a n i t e
Brookins, 1974b
0.70500 T
South Peak area
South Peak Quad
whole-rock
quartz monzonite
Irhite, 1977
0.69400 i 0.02390
Mineral Hill area
White Sands, Organ Quad
~~~~~~
46
Quad
**
min. separates
feldspar-musc schist
Pecos Complex
Ward, 1990
isochron
0.71416 t 0.00042
COMMENTS: Isochron o f severalmineralseparates.
r
S. Sangre de C r i s t o Mtns
#
# 49
# 50
~~~~
COMMENTS:
**
1294 d 161
San Andres Mountains
Mineral Hill Pluton
isochron
COMMENTS: Isochron o f 5 samDles.
**
1295 =
muscovite
P i c u r i s Mountains
pegmatite border zone
Pegmatite
Balestri
Harding
and Brookins, 1985
model
0.71000 x
COMMENTS: Samples were c o l l e c t e d and analyzed i n l a t e 1970s.
# 51
#
Harding mine area
Trampas Quad
52
25
**
1300 T
Sandia Mountains
Sandia Granite
isochron
COMMENTS: Two-pointmineral
Rh-sr
bi,whole-rock
quartzmonzonite
Brookins and Majumdar, 1982
--
# 53
Carnue area
T i j e r a s Quad
whole-rockisochron.
**
1300
Picuris Mountains
HardingPegmatite
*
mica
pegmatite
A l d r i c he t
#
al.,
1957
54
Harding mine area
Taos Quad
COMMENTS:
**
1304 I_
whole-rock
Picuris Mountains Harding mine area
pegmatite spotted rock
Pegmatite
Balestri
Harding
and Brookins, 1985
model
0.71000 .t
COMMENTS: Sampleswere
c o l l e c t e d and analyzed i n l a t e 1970s.
**
# 55
Trampas Quad
~~~~
1304 T
Caballo Mountains
Caballo Granite
whole-rock
gneissic granite
Muehlberger e t al.,
1966
#
56
#
60
Caballo dam area
Caballo Quad
COMMENTS: Location i s approximate.
**
1310 x whole-rock
SandiaMountains
Sandia Granite
isochron
COMMENTS: Two-pointmineral
1310
T
260
bi,
quartz monzonite
Brookins and Majumdar, 1982
--
Carnue area
T i j e r a s Quad
whole-rockisochron.
**
# 61
whole-rock
schist
Ward, 1990
0.71360
0.00890
S. Sangre
de
C r i s t o feld-musc
Mtns
P ~ C O SComplex
Rio Mora area
Pecos F a l l s Quad
*
isochron
COMMENTS:
**
biotite
granite
Muehlbarger e t al.,
1314 i
S i e r r a Grande arch
S i e r r a Grande No. 1 g r a n i t e
1966
#
62
#
65
#
68
#
71
#
72
#
75
Des Moines area
Des Moines Quad
COMMENTS:
1319
i
42
**
whole-rock
S. Sangre de C r i s t o Mtns
Truchas Peak area
Truchas Peak Quad
Vadito Group
isochron
COMMENTS:
**
1320
whole-rock
Sandia Mountains
Sandia Granite
isochron
COMMENTS: Two-mintmineral
bi,
quartzmonzonite
Brookins and Majumdar. 1982
--
Carnue area
T i i e r a s Quad
whole-rockisochron.
**
muscovite
1324
Picuris
areaMountains mine
Harding pegmatite
Pegmatite
Balestri
Harding
and Brookins,
Trampas
1985
model
0.71000 =
COMMENTS: Samples were c o l l e c t e d and analyzed i n l a t e 1970s.
*
*
**
1325
76
whole-rock
San AndresMountains
monzonite
quartz
Capitol Peak Pluton
White, 1977
isochron
0.69690 T 0.00350
COMMENTS: Isochron o f 7 samples, widely spaced. FromSheep
Strawberry Peak quads.
*
Quad
1327
136
**
Magdalena Mountains
Magdalena Granite
isochron
COMMENTS: Isochron o f 4 samples.
whole-rock
granite
White, 1978
0.73800 i 0.02020
N San
Mtns
Andres
Quad
Mountain, Capitol Peak, Tip TopCanyon,
Jordan Canyon area
Magdalena Quad
and
26
Rb-Sr
1329 T
**
lepidolite
Picuris Mountains
pegmatite replacementmicas
HardingPegmatite
B a l e s t r i and Brookins, 1985
model
0.71000 I
COMMENTS: Samples were c o l l e c t e d and analyzed i n l a t e 1970s.
1330
*
**
whole-rock
nite quartz MountainsSandia
Sandia
Brookins
Granite
isochron
COMMENTS: Two-pointmineral
**
1330 t whole-rock
SandiaMountains
Sandia Granite
isochron
COMMENTS: Two-oointmineral
bi,
and Majumdar, 1982
--
*
*
1336
73
**
P i c u r i s Mountains
HardingPegmatite
isochron
COMMENTS: Isochron o f 4 samples.
f.
26
78
#
79
#
80
#
82
#
83
Caiion d e l Agua area
P l a c i t a s Quad
whole-rockisochron.
*x
whole-rock
1332 f
P i c u r i s Mountains
pegmatite
Harding
spotted
rock
Pegmatite
Balestri
Harding
and Brookins, 1985
model
0.71000
COMMENTS: Samples were c o l l e c t e d and analyzed i n l a t e 1970s.
1338
#
Caiion d e l Agua area
PLacitas Quad
whole-rockisochron.
bi,
quartz monzonite
Brookins and Majumdar, 1982
--
# 7 7
Hardingmine area
Trampas Quad
**
Oscura Mountains
Oscura Pluton
Quad
isochron
COMMENTS: Isochron o f 8 samples.
area
mine
Trampas Quad
whole-rock
pegmatite spotted rock
1979
Brookinsetal.,
Harding mine area
Trampas Quad
whole-rock
biotite granite
White, 1978
various areas
Trinity
Mockingbird
site,
0.70600
Gap SE
+ 0.00160
**
1340
whole-rock
bi,
monzonite
quartz
SandiaMountains
Sandia
Brookins
Granite
Majumdar,
and
isochron
COMMENTS: Two-pointmineral
whole-rockisochron.
# 86
1982
Caiion d e l Agua area
P l a c i t a s Quad
1982
Embudito Canyon area
Sandia Crest Quad
--
**
1340 r whole-rock
SandiaMountains
Sandia
Brookins
Granite
isochron
COMMENTS: Two-pointmineral
1340
r
**
Sandia Mountains
Sandia Granite
bi,
quartz monzonite
Majumdar,
and
--
#
87
#
ea
#
93
#
94
whole-rockisochron.
mica
granite
ALdrichetal.,
3 mi N of Placitas
1957
P l a c i t a s Quad
COMMENTS:
1346
T
**
Oscura Mountains
Mockingbird Gap p l u t o n
whole-rock
granite
Muehlberger e t al.,
S. Oscura Mountains
1966
Mockingbird Gap SE Quad
COMMENTS:
1348
r
**
P i c u r i s Mountains
Pegmatite
Balestri
Harding
model
COMMENTS: sampleswere
whole-rock
pegmatite spotted rock
and Brookins, 1985
0.71000
.L
c o l l e c t e d and analyzed i n l a t e 1970s.
Harding mine area
Trampas Quad
27
al.,
Rb-sr
1350
104
**
whole-rock
Los Pinos Mountains
Bootleg Canyon area
granite
et
Brookins
Sepultura
granite
1980
Montoso
Cerro
Quad
isochron
COMMENTS: Isochron o f 6samples.DataarefromBolton,
1976. Shastri (1993)has shown t h a t t h i s i s
p l u t o n as Los Pinosgranite, and recomnendsabandonment of the name Sepultura.
1352
i
24
**
S. Sangre de C r i s t o Mtns
Vadito Group
min isochron
min. separates
quartz-musc s c h i s t
Ward, 1990
0.75800 * 0.01400
#
96
#
99
same
Truchas Peak area
Truchas Peak Quad
COMMENTS:
1353 i
**
lepidolite
P i c u r i s Mountains
pegmatitereplacementmicas
Pegmatite
Harding
Balestri
Brookins,
and
1985
model
0.71000 f
COMMENTS: Samples were c o l l e c t e d andanalyzed i n l a t e 1970s.
*
**
1356
20
Delaware basin
HumbleNo.
1 Huapache g r a n i t e
biotite
biotite granite
Denison
and
Hetherington,
# 100
Harding mine area
Trampas Quad
# 101
1969
Carlsbadarea
Red B l u f f Draw
Quad
COMMENTS:
**
1362
mica
P i c u r i s Mountains
pegmatitereplacementmicas
Pegmatite
Balestri
Harding
Brookins,
and
Trampas
1985
model
0.71000 r
COMMENTS: Samples were c o l l e c t e d andanalyzed i n l a t e 1970s.
**
1364 x 27
whole-rock
Pedernal H i l l s q u a r t z i t e
and s c h i s t
Pedernal
metasediments
Mukhopadhyay e t al., 1975
0.00190
isochron
0.70460
COMMENTS: Isochronof 4 q u a r t z i t e and6 s c h i s t samples. Location unknown.
*
1365
**
i
S. Sangre de C r i s t o Mtns
Embudo g r a n i t e
model
*hole-rock
granite
al., Brookins
et
0.71000
*
# 106
Harding mine area
Quad
# 107
Pedernal Mtn area
Pedernal
Mountain
Quad
# 108
1985
Cordova area
Truchas
Quad
COMMENTS:
*
**
1366
cleavelandite
Picuris Mountains
pegmatite cleavelandite-qtz
Pegmatite
Balestri
Harding
Brookins,
and
1985
model
0.90000 =
COMMENTS: Samples were c o l l e c t e d andanalyzed i n l a t e 1970s.
1372
**
i
S. Sangre de C r i s t o Mtns
Embudo g r a n i t e
model
COMMENTS:
**
1380 T 29
Mountains
Los Pinos
Los Pinos granite
isochron
COMMENTS: Isochron of 6samples.
whole-rock
granite
Brookinsetal.,
0.71000 T
# 114
1985
whole-rock
granite
Bolton, 1976
0.72670
0.00800
*
I
Nambe Falls area
Tesuque Quad
# 116
Whiteface Mtn area
Becker and CerroMontoso Quad
**
*
1380
whole-rock
Sandia Mountains
granite
sandia Granite
Brookins, 1974c
isochron
COMMENTS: O r i g i n a l d a t i n g byWasserburg e t a l . ,
1965.
1380
# 109
Hardingminearea
Trampas Quad
30
Zuni Mountains
**
# 117
Carnue area
T i j e r a s Quad
whole-rock
metarhyolite
Post
Office
Flat
metarhyolite
Brookins
et
al.,
isochron
0.00900
0.72100
COMMENTS: Isochron o f 5 samples.Approximate
location.
# 118
1978
Post Office Flat area
P o s t O f f i c e F l a t Quad
28
Rb-Sr
**
mica
1382
pegmatitereplacementmica
P i c u r i s Mountains
HardingPegmatite
B a l e s t r i and Brookins, 1985
model
0.71000 t
COMMENTS: Samples were c o l l e c t e d and analyzed i n Late 1970s.
Harding mine area
Trampas Quad
**
whole-rock
C r i s t o Mtns
R i o s c h i sb ti - p l a g
Pecos Complex
Ward, 1990
isochron
0.70379 2 0.00056
COMMENTS: Samples a r e from2-3 m of d u c t i l e t h r u s t f a u l t t h a t
Mora area
Pecos F a l l s Quad
*
1384
=
# 120
# 121
86
S. Sangrede
**
1387 *
Pecos slope
De Kalb No. 1 Lewis g r a n i t e
K-feldspar
granite
Muehlberger e t al.,
marks Pecos Complex-Hondo Group contact.
# 123
1966
B i t t e r Lakearea
Comanche Spring Quad
COMMENTS:
**
1396 r 172
P i c u r i s Mountains
Pegmatite
Brookins
Harding
isochron
COMMENTS: Isochron o f 6 samples.
**
1397 i
Delaware basin
Socony Mobil No. 95 g r a n i t e
# 127
cleavelandite
pegmatite
cleavelandite-qtz
Harding
area
mine
al.,
et
1979
0.90100
Trampas Quad
*
whole-rock
granite porphyry
Muehlberger e t at.,
# 128
1966
Buckeye area
Buckeye Quad
1966
Mogote H i l l s area
Mogote H i l l s Quad
COMMENTS:
**
1397 t
S i e r r a Grande arch
Shamrock No.McArthur
1
granite
K-feldspar
granite
Muehlberger aelt. ,
# 129
COMMENTS:
**
1397 T 30
g r a n i t e bDelaware
iotite
basin
Humble No. 1 Huapache g r a n i t e
# 130
feldspar
Denison and Hetherington, 1969
Carlsbad area
Red Bluff Draw Quad
COMMENTS:
**
1400 T 59
whole-rock
# 131
Los PinosMountains
granite
Bootleg Canyon area
Sepultura granite
Bolton, 1976
Cerro Montoso Quad
isochron
COMMENTS: Isochronof 6 samples. Shastri (1993)has shown t h a t t h i s p l u t o n i s r h e
same as t h e Los Pinos
granite, and recomnends abandonment of thetermSepultura.
**
1400
whole-rock
P i c u r i s Mountains
quartz monzonite
Peiiasco Quartz Monzonite
Long, 1974
isochron
COMMENTS: Data reinterpreted from Fullager
and Shiver (1973).
*
1406 I_
cleavelandite-qtz
pegmatite
Mountains
Picuris
Pegmatite
Balestri
Harding
model
**
# 132
Rio Lucio area
Peiiasco, E l V a l l e Quad
Isochronof
3 samples.
cleavelandite
and Brookins,
Trampas
1985
0.90000 5
COMMENTS: Samples were c o l l e c t e d and analyzed i n l a t e 1970s.
**
cleavelandite
1406 r
Picuris Mountains
pegmatite
cleavelandite-qtz
Harding
HardingPegmatite
B a l e s t r i and Brookins, Trampas
1985
0.90000
model
COMMENTS: Samples were c o l l e c t e d and analyzed i n l a t e 1970s.
*
1407 i 19
**
whole-rock
pegmatite
Mountains
Sandia
and a p l i t e
Juan Tab0 pegmatite5
Brookins
and Majumdar, 1989
0.71300 I 0.00100
isochron
COMMENTS: 3pegmatite5 and one a p l i t e fromdeformed dikes curtings across
# 135
Harding mine area
Quad
# 136
area
mine
Quad
# 137
Juan Tab0 area
Sandia Crest Quad
Juan Tab0 Series.
29
Rb-Sr
**
whole-rock
1407 t
pegmatite
P i c u r i s Mountains
Glenwoody Fm pegmatite
Brookinsetal.,
model
0.71000
COMMENTS: Pegmatite a t Ortega Fm-Glenwoody Fm contact.
*
**
1407 T
San Diego Mountain
San Diego Mtn gneiss
Muehlberger
# 138
P i l a r area
CarsonQuad
1985
whole-rock
dioritic gneiss
e t al.,
# 139
1966
Tonuco Mtn area
Seldon Canyon Quad
COMMENTS: Approximate location.
**
1412 L
S. Sangre de C r i s t o Mtns
Embudo g r a n i t e
model
COMMENTS:
**
1413 I
P i c u r i s Mountains
RinconadaFormation
model
COMMENTS: From R2 s c h i s t .
whole-rock
granite
Brookinsetal.,
0.17000
# 143
*
whole-rock
oelitic schist
Brookins e t al.,
0.71000
**
1416 r
whole-rock
P i c u r i s Mountains
pegmatite
Brookins e t al.,
Harding Pegmatite
0.71000
model
COMMENTS: Fine-grained phase o f pegmatite.
*
1416 i 100
**
Pedernal H i l l s
Pedernal Mtn g r a n i t e
1985
Nambe Falls area
Tesuque Quad
1985
Copper Hill area
Trampas Quad
1985
Harding mine area
Trampas Quad
# 144
# 145
whole-rock
granite
Armstrong and Holcombe, 1982
# 146
Pedernal Mtn area
Pedernal Mtn Quad
COMMENTS: Approximate l o c a l i t y .
1420 z 117
**
Magdalena Mountains
Magdalena Granite
isochron
COMMENTS: Isochronof
# 147
whole-rock
granite
White, 1977
0.70680 2 0.01550
Jordan Canyon area
Magdalena Quad
10 samples.
**
lepidolite
1422 i
pegmatitereplacementmicas
Picuris Mountains
Harding Pegmatite
B a l e s t r i and Brookins, Trampas
1985
model
0.71000 I_
COMMENTS: Samples were c o l l e c t e d and analyzed i n l a t e 1970s.
# 148
Hardingminearea
Quad
**
1422 t
whole-rock
pegmatite
P i c u r i s Mountains
Glenwoody Fm pegmatite
al.,
Brookins
et
0.71000
model
COMMENTS: Pegmatite cutting metarhyolite.
# 149
1985
*
**
1424 r
P i c u r i s Mountains
RinconadaFormation
model
COMMENTS: From R2 s c h i s t .
P i l a r area
Carson Quad
whole-rock
pelitic schist
Brookins e t al.,
0.71000 T
1985
.
# 151
P i l a r c l i f f s area
Trampas Quad
1425 i 15
**
mu, whole-rock
# 153
Tusas Mountains
f e l d s c h i s t & pegmatite
Mesa J a r i t a a r e a
Vadito Group
Long, 1972
La Madera Quad
isochron
0.72000 t 0.00120
COMMENTS: Isochron of 8 samples from 4 widely spaced l o c a l i t i e s . Combined whole-rock and mineralisochrons.
Dating ametamorphicevent,
according t o author.
**
1427 i
Picuris
area Mountains
Puntiagudo
Cerro
Puntiagudo Granite Porphyry
model
COMMENTS:
whole-rock
granite
al., Brookins
et
0.71000 x
# 154
Trampas
1985
Quad
30
1430 L
**
pegmatite
P i c u r i s Mountains
Glenwoody Fm pegmatite
model
COMMENTS: PegmatitefromOrtega
*
**
whole-rock
# 156
Brookinsetal.,
1985
0.71000 r
Fm-Glenwoody Fm contact.
whole-rock
granodiorite gneiss
Muehlberger and Denison, 1964
1430
San Andres Mountains
White Mine gneiss
Pilar area
CarsonQuad
# 157
WhiteMinearea
Salinas Peak Quad
COMMENTS:
**
1435 5
P i c u r i s Mountains
Rinconada
Formation
Brookins
model
COMMENTS: From R2 s c h i s t .
whole-rock
pelitic schist
e t al.,
0.71000 2
**
1438 d
P i c u r i s Mountains
Glenwoody Formation
Brookins
model
whole-rock
metarhyolite
e t al.,
0.71000 *
# 161
1985
P i l a r c l i f f s area
Trampas Quad
1985
P i l a r c l i f f s area
Trampas Quad
# 164
COMMENTS:
**
1439 i
Florida Mountains
South Peak a l k a l i g r a n i t e
model
COMMENTS:
whole-rock
alkaligranite
Brookins, 197413
0.70500 .t
1439 9 30
**
whole-rock
Manzano Mountains
monzonite
quartz
Monzonite
Quartz
Bolton,
Priest
1976
isochron
0.70540 T 0.00120
COMMENTS: Isochron of 6samples.
**
1439 i
SandiaMountains
Sandia
Brookins,
aplite
Granite
isochron
COMMENTS: DatafromSteiger
# 166
South Peak area
G y m Peak Quad
# 167
Estadio Canyon area
Scholle, ManzanoPeak
Quad
# 168
muscovite
aplite
1974c
*
Carnue area
T i j e r a s Quad
0.70400
and Wasserburg, 1969
**
1440
30
# 169
whole-rock
Jemez Mountains
monzogranite dikes
Fenton Hill area
GT-2,EE-1,
E€-2dikes
Brookins and Laughlin, 1983
Seven Springs Quad
isochron
COMMENTS: These datasupercedeBrookins
and Laughlin, 1976. Isochron of 4samples from GT-2, 1 sample from
EE-1,and 4samples from EE-2. A m r o x i m a t e l o c a l i t y .
**
bi.
1440 I_ whole-rock
40
onitequartzMountainsSandia
Sandia Granite
Brookins and Majumdar, 1982
Sandia Crest Quad
isochron
n.7n5~n
. ...
... ...
... .
... - n.nnr
...
.
J50
COMMENTS: Mineral--whole-rock isochron of
8 previous samples p l u s 3 whole-rock samples fromTaggart
Brookins, 1975.
1440 T 130
**
P i c u r i s Mountains
Rana Quartz Monzonite
isochron
COMMENTS: Isochronof 5 samples.
whole-rock
quartz monzonite
Brookins e t al., 1985
0.71130 * 0.00710
**
lepidolite
1441 i
P i c u r i s Mountains
pegmatitereplacementmicas
Pegmatite
Balesrri
Harding
and Brookins,
Quad
Trampas
1985
model
0.71000
COMMENTS: Samples were c o l l e c t e d and analyzed i n Late 1970s.
*
# 170
and
# 171
S. o f Hardingmine
TramDaS Quad
# 173
Harding mine area
31
**
1441 t
P i c u r i s Mountains
HardingPegmatite
model
K-feldspar
pegmatite
Brookins e t al.,
0.71000 .L
Rb-Sr
# 174
1985
Hardingminearea
Tramuas Quad
COMMENTS:
**
1450 T
SandiaMountains
Monte Largolsandia schist
model
muscovite
sillimanite schist
M a r v i n e t al., 1988
# 179
Monte Largo H i l l s area
sandia Park Quad
COMMENTS:
*
**
muscovite
1454
Picuris Mountains pegmatite border
zone
Pegmatite
Balestri
Harding
and Brookins, 1985
0.71000 t
model
COMMENTS: Samples were c o l l e c t e d and analyzed i n l a t e 1970s.
1457
L
**
S. Sangre de C r i s t o Mtns
Embudo g r a n i t e
model
COMMENTS:
**
1457 E
P i c u r i s Mountains
RinconadaFormation
model
COMMENTS: From R2 s c h i s t .
**
1460
P i c u r i s Mountains
Vadito Group s c h i s t
model
COMMENTS:
*
whole-rock
granite
Brookinsetal.,
0.71000 T
whole-rock
pelitic schist
Brookins e t al.,
0.71000 i
whole-rock
felsic schist
Brookins e t al.,
0.71000 =
**
1462 i 21
Tusas Mountains
Granite
Piedras
Tres
isochron
COMMENTS: Isochron of 9 samples.
# 181
Harding mine area
Trampas Quad
# 184
1985
SantaCruz Res. area
CundiyoQuad
1985
Capper Hill area
Trampas Quad
1985
Harding mine area
Trampas Quad
# 185
# 186
whole-rock
quartz monzonitegneiss
Maxon, 1976a
0.71830 = 0.00060
# 191
Tres Piedras area
Tres Piedras Quad
**
1464 t 5 0
S. Sangre de C r i s t o Mtns
whole-rock
granite
Santa Fe rangearea
Embudo
Register
granite
and Brookins, 1979
Quad
isochron
0.70440 i 0.00420
COMMENTS: 8 point whole-rock isochron from widely
spaced samples. Locations given i n Brookins e t al.,
1467 .e 43
**
whole-rock
Tusas Mountains
granite
Lake Hopewell
granite
Boadi, 1986
isochron
0.70256 i 0.00029
COMMENTS: ALL samples were altered. Isochron of
7 samples.
# 193
1985.
# 195
HopewellLakearea
QuadMountain
Burned
1467 .L 35
**
whole-rock
# 196
Cimarron Range
gneiss granitic
Tolby Creek area
Nest
Eagle
g
f enles i sc s
Leyenberger, 1983
Touch-Me-Not-MountainQuad
isochron
0.70700 T 0.00240
COMMENTS: Isochron o f 5 samples. T h i s u n i t wasmapped by J.A. Grambling as granulite facies gneiss.
Sample
locations unknown, but probably between Tolby Creek and EagleNest Lake.
1469 T 43
**
Tusas Mountains
Granite
Piedras
Tres
isochron
COMMENTS: Isochronof
**
whole-rock
quartz monzonire gneiss
Maxon, 1976a
0.71450
0.00130
*
# 197
Tusas River Can area
Las TablasQuad
5 samples.
1471 T 97
whole-rock
granite
Pedernal H
iI I s
Pedernal Mtn area
Pedernal
Mountain
Quad
Pedernal Mtn g r a n i t e
Mukhopadhyay e t at., 1975
isochron
COMMENTS: Isochron of 3 p o r p h y r i t i c and 6 a l k a l i c samples. Location unknown.
# 201
32
**
1472 i 15
sandia Mountains
Sandia
Taggart
Granite
isochron
COMMENTS: Isochron of 3samples.
**
1476 T
P i c u r i s Mountains
Harding Pegmatite
model
COMMENTS:
*
Rb-Sr
whole-rock
granite
and Brookins, 1975
K-feldspar
pegmatite
Brookins e t al.,
0.71000 i
# 202
J a r a l Ranger STation
Sandia Crest Quad
# 204
1985
90
**
1480
sandia Mountains
Sandia Granite
isochron
COMMENTS: Isochronof 4 samples.
whole-rock
granulitic xenoliths
Brookins and Majumdar, 1989
0.70500 L 0.00200
**
1480 I:
LosPinosMountains
LosPinos g r a n i t e
whole-rock
granite gneiss
Muehlberger e t al.,
Hardingminearea
Trampas Quad
# 205
Carnue area
T i j e r a s Quad
# 206
1966
unknown area
BeckerQuad
COMMENTS: Location unknown.
**
mica
1481 *
P i c u r i s Mountains
pegmatitereplacementmicas
B a l e s t r i and Brookins, Trampas
1985
HardingPegmatite
0.71000 .L
model
COMMENTS: Samples were c o l l e c t e d and analyzed i n l a t e 1970s.
# 209
Hardingminearea
Quad
*
234
**
whole-rock
1485
Garcia amphibolite
Magdalena Mountains
White,
Garcia Canyon metagabbro 1977
isochron
0.70400 i 0.00230
COMMENTS: Isochronof 6 samples.
**
1488
42
Cimarron Range
EagleNest g r a n i t e
isochron
COMMENTS: Isochron of 4 samples. J. A.
approximate.
1490
L
**
S. Sangre de C r i s t o Mtns
P i d l i t e pegmatite
# 210
Canyon area
Magdalena Quad
whole-rock
Tolby Creek area
granite
Leyenberger. 1983
Touch-Me-NotQuad
Mountain
0.70780 i 0.00050
Grambling mapped t h i s as g r a n i t i c gneiss.Location of samples
# 211
mica
pegmatite
A l d r i c h e t al.,
# 212
1957
P i d l i t e minearea
Mora Quad
COMMENTS:
*
**
whole-rock
1490
90
ZuniMountains
g r a n o d i o r i t e ,g r a n i t e ,a p l i t e
M i r a b e l" a p l i t e "
Brookins and Della Valle, 1977
Isochron
0.70620 i: 0.00080
COMMENTS: Isochron of 6 g r a n o d i o r i t e and 6 g r a n i t e - a p l i t e samples.
1492
T
**
S. Sangre de C r i s t o Mtns
Embudo g r a n i t e
model
whole-rock
granite
Brookins et
0.71000
*
# 213
Post Office F l a t area
P o s t O f f i c e F l a t Quad
# 215
al.,
1985
Pacheco Canyon area
Tesuque Quad
COMMENTS:
**
1493 I 30
Pedernal H i l l s
M-2 metavolcanic
Armstrong
whole-rock
metarhyodacite
and Holcombe, 1982
# 216
Pedernal Mtn area
Pedernal Mtn Quad
COMMENTS: Approximate l o c a l i t y .
**
1494 I
muscovite
Picuris Mountains
pegmatite
border
zone
HardingPegmatite
B a l e s t r i and Brookins, Trampas
1985
model
0.71000 T
COMMENTS: samples were c o l l e c t e d and analyzed i n l a t e 1970s.
# 217
area
Harding
mine
Quad
33
1495
**
i
whole-rock
felsic schist
Brookins et a!.,
Picuris Mountains
Vadito Group schist
model
COMMENTS:
1497
0.71000
**
T
Picuris Mountains
Harding Pegmatite
model
COMMENTS: Samples were collected and
*
Rb-Sr
# 218
1985
cleavelandite
pegmatite
cleavelandite-qtz
Balestri and Brookins, 1985
0.90000
*
Harding mine area
Trampas Quad
# 219
Harding mine area
Trampas Quad
analyzed
in late 1970s.
whole-rock
i 120
**
# 220
Fenton Hill area
Jemez Mountains
biotite granodiorite
Brookins and Laughlin, 1983
Seven Springs Quad
GT-2 and EE-2 granodiorite
isochron
0.70380 3 0.00160
COMMENTS: These data supercede Brookins andLaughlin, 1976. Isochron of 14 samples from GT-2 and 6 samples
from EE-2. Approximate locality. Depth = 2588-2925 m.
1500
1501
**
T
whole-rock
felsic schist
Brookins et al.,
Picuris Mountains
Vadito Group schist
model
COMMENTS:
1502
0.71000
**
=
Picuris Mountains
Harding Pegmatite
model
COMMENTS: Samples were collected and
1510
**
=
Picuris Mountains
Harding Pegmatite
model
COMMENTS: Samples were collected and
1517
r
49
**
*
# 223
1985
muscovite
pegmatite border zone
Balestri and Brookins, 1985
0.71000
# 224
Harding mine area
Trampas Quad
T
analyzedin late 1970s.
muscovite
pegmatite border zone
Balestri and Brookins, 1985
0.71000
# 226
Harding mine area
Trampas Quad
i
analyzedin Late 1970s.
whole-rock
orbicular granite
Enz et al., 1979
Sandia Mountains
Sandia Granite
Harding mine area
Trampas Quad
0.70300
# 227
Sandia Crest area
Sandia Crest Quad
.e
COMMENTS:
1520
*
**
muscovite
hi-musc gneiss
Marvin et al., 1988
Sandia Mountains
Juan Tab0 Series
model
COMMENTS:
1527
39
I
0.70300
**
Manzano Mountains
Ojita granodiorite
isochron
COMMENTS: Isochron of 10 samples.
1529
f
42
x*
L
whole-rock
biotite granodiorite
White, 1979
0.70160
# 229
CaAon del Agua area
Placitas Quad
I
# 231
Guadalupe Peak area
Bosque Peak Quad
0.00100
muscovite
Picuris Mountains
Harding Pegmatite
isochron
COMMENTS:
# 232
Harding mine area
Trampas Quad
i 120
**
whole-rock
qtz monzonite-granodiorite
Florida Mountains
Florida Mtns granite
Brookins, 1980
isochron
0.70940 i 0.00900
COMMENTS: Isochron of 8 samples. Location of samples unknown.
# 233
1530
1534
d
**
area de Cristo
Canyon
Sangre
Mtns
Brookins
granite
Embudo
model
COMMENTS:
S.
Pacheco
whole-rock
granite
et al., 1985
0.71000
i
unknown area
South Peak Quad
# 234
Quad
Tesuque
34
1550 T 130
**
Jemez Mountains
EE-2 monzogranite
Brookins
isochron
COMMENTS: These datasupersedeBrookins
*
**
130
1550
P i c u r i s Mountains
Puntiagudo Granite Porphyry
isochron
COMMENTS: Isochronof 6 samples.
Rb-Sr
whole-rock
monzogranitegneiss
and Laughlin, 1983
and Laughlin, 1976. Isochron of 9 samples. Approximate l o c a l i t y .
whole-rock
granite
Brookins e t al., 1985
0.70560 i 0.00530
**
1550 T 40
Tusas Mountains
Tusas Mtn g r a n i t e
isochron
COMMENTS: Isochron of 4 samples. Paper
# 236
Fenton Hill area
Seven Springs Quad
# 237
Cerro Arboles area
TrampasQuad
whole-rock
Tusas Mountain area
aranite
iobus and Hedge, 1982
Burned
Mountain
Quad
0.72000 i
also includes Pb-Pb model ages o f g r a n i t e a t 1449 and 1421 Ma.
**
whole-rock
1559 T 52
Pinon Canyon area
Los PinosMountains
metarhyolite
BeckerQuad
Fm
Brookins
al.,et
1980
S e v i lM
l eet taa r h y o l i t e
isochron
COMMENTS: Isochron of 4 metarhyolite and 1 amphibolite sample. Uses data o f Bolton, 1976.
# 243
**
cleavelandite
1565 .e
cleavelandite-qtz
P i c upegmatite
r i s Mountains
Pegmatite
Balestri
Harding
and Brookins,
Trampas
1985
0.90000 x
model
COMMENTS: Samples were c o l l e c t e d and analyzed i n l a t e 1970s.
Hardingminearea
Quad
1568 i 91
**
monzonite
San
Mountains
quartz
Andres
Mineral Hill P l u t o n
isochron
0.00690
COMMENTS: Isochron of 6 samples.
Mineral Hill area
White Sands, Organ Quad
# 244
# 246
whole-rock
White, 1977
0.65080
**
1569 T 314
Manzano Mountains
Priest Quartz Monzonite
isochron
COMMENTS: Isochron o f 6 samples. Used
# 238
whole-rock
quartz monzonite
Brookinsetal.,
1980
0.70290
0.00640
data o f Bolton. 1976.
*
# 247
Estadio Canyon area
Scholle, ManzanoPeak
**
1576 I 72
Sandia Mountains
Cibola Gneiss
isochron
COMMENTS: Isochron of 7 samples.
whole-rock
aranite gneiss
i a g g a r t and Brookins, 1975
0.00100
0.70220
T i i e r a s Canvon area
T i j e r a s Quad
1584
**
Picuris Mountains
Glenwoody Formation
model
whole-rock
metarhyolite
Brookinsetal.,
0.71000 I:
P i l a r c l i f f s area
Trampas Quad
*
Quad
# 249
# 251
1985
COMMENTS:
**
1598
P i c u r i s Mountains
Glenwoody Formation
model
*
whale-rack
# 253
P i l a r area
CarsonQuad
COMMENTS:
**
whole-rock
1601 T 239
granite
LosPinosMountains
Brookinsetal.,
1980
LosPinos g r a n i t e
isochron
0.70780 T 0.02050
COMMENTS: Isochron of 6 samples. DataarefromBolton,
1976.
1608
3
**
S. Sangre de C r i s t o Mtns
Rana Quartz
Monzonite
Fullager
isochron
COMMENTS: Isochron of 2samples
whole-rock
aplite
and Shiver, 1973
0.70750 L
o f Rana qrz monzonite.
# 254
Whiteface Mtnarea
Becker and Cerro Montoso Quad
# 255
various areas
Trampas Quad
35
**
1615 I 15
whole-rock
San PedroMountains
Pk area
a t z d i o r i t e & atz monzonite Nacimiento
San Pedro quartz
monzonite
Wobus and Hedge, 1980
Nacimiento Peak Quad
isochron
1.70470 x 0.00050
COMMENTS: Isochron of 7 samples. Woodward (1987) n o t e d t h a t t h i s u n i t y i e l d e d
U-Pb z i r c o n age o f 1730
(L.T. Silver,pers.
corn., 1972).
**
1616 =
kepidolite
P i c u r i s Mountainspegmatitereplacementmicas
Pegmatite
Balestri
Harding
and Brookins,
Trampas
1985
0.71000
model
COMMENTS: Samples were c o l l e c t e d and analyzed i n l a t e 1970s.
*
**
*
1620
40
Jemez Mountains
GT-2 and EE-1 monzogranite
isochron
COMMENTS: These datasupercedeBrookins
from EE-I. Approximate L o c a l i t y . Depth
whole-rock
monzograniric gneiss
Brookins and Laughlin, 1983
# 258
T
20 Ma
# 259
Harding mine area
Quad
# 260
Fenton Hill area
Seven Springs Quad
and Laughlin, 1976. Isochron of 24 samples from G T - 2 and 1 sample
= 731 m t o 2588 m.
*x
# 261
whole-rock
various areas
a r a n i t e .a o l i t e
C r i s t o Mtns
Embudo g r a n i t e
Fullage; and Shiver,
Trampas,
1973
Peiiasco, E l V a l l e Quad
isochron
0.70070 t 0.00110
COMMENTS: Isochron of 9 samples, i n c l u d i n g Rana q t z monzonite, Peiiasco q t z monzonite, and "Embudo g r a n i t e "
from widely spacedareas.
1621
i
-
27
S. Sanarede
**
1625 T
OscuraMountains
Sun No. 1 Bingham State
gneiss
Muehlberger
COMMENTS: From n o r t h o f
49
Oscura Mtns.
K-feldspar
granitic gneiss
e t at.,
# 263
1966
N of OscuraMtns
Peak
Wrye
SW Quad
Sample from part of subsurface "central granite belt."
**
whole-rock
Mountains metarhyolite
Pinon Canyon area
BeckerQuad
s e vMi lel teat rah y o l i t e
Fm
Bolton, 1976
isochron
0.70210 r 0.00220
COMMENTS: Isochron of 4 metarhyolite and 1 amphibolite sample. Samples c o l l e c t e d b y K.C. Condie.
1625
f
# 264
Los Pinos
**
1626 T 17
Tusas Mountains
Granite
Piedras
Tres
isochron
COMMENTS: Two pointisochron.
**
1627 i
ea
P i c u r i sa rMountains
Glenwoody Formation
model
whole-rock
Tusas Mtn area
qtz monzonite gneiss
Mule Canyon Quad
Maxon, 1976a
0.71020 .L 0.00710
Maxon (1976b) l i s t s Rb-Sr isochron age o f 1491 Ma.
Pilar
whole-rock
metarhyolite
Brookins e t al.,
0.71000 r
# 265
# 266
1985
Quad
Carson
COMMENTS:
1628
19
**
n
whole-rock
267
various areas
a r a naiut e
l i .t e
Fullage; and Shiver, 1973 '
Trampas, Peiiasco, EL V a l l e Quad
Embudo-granite
isochron
0.70140 T 0.00080
COMMENTS: Isochron of 7 samples, i n c l u d i n g Rana q t z monzonite, Peiiasco q t z monzonite, and Embudo granite.
T
S. Sanare de C r i s t o Mtns
1630
i
250
**
S. Sangre de C r i s t o Mtns
Pecos Complex
isochron
*hole-rock
amphibolite
Ward, 1990
0.70390 .L 0.00049
# 268
Rio Valdezarea
Pecos F a l l s Quad
COMMENTS:
**
# 271
whole-rock
C r i s t o Mtns
granite
various areas
Embudo
Fug
l l raagneirt e
and Shiver, 1973
Trampas,PeRasco,
EL V a l l e Quad
isochron
0.00130
0.70120
COMMENTS: Isochron o f 5 samples, i n c l u d i n g Rana q t z monzonire, Peiiasco q t z monzonite, Embudo granite.
1638
I
40
S. Sangrede
36
1640 i 40
**
SandiaMountains
Juan Tabo Series
isochron
COMMENTS:
1640
*
230
**
S. Sangre de C r i s t o Mtns
Pecos Complex
isochron
COMMENTS:
whole-rock
s c h i s t and amphibolite
Brookins and Majumdar, 1983
# 272
Caiion d e l Agua area
P l a c i t a s Quad
# 273
whole-rock
amphibolite
Ward, 1990
0.70503
0.00043
Rio Mora area
Pecos F a l l s Quad
*
**
# 284
1654 E 23
whole-rock
Tusas Mountains
trondhjemite
Rio Brazos trondhjemite
al.,Barker
et
197.:
isochron
0.70320 T 0.00020
COMMENTS: Isochron o f 6 widely separated samples.
**
1655 I
whole-rock
P i c u r i s Mounrains
Desmatite
Pegmatite
Brookins
Harding
e t at.,
model
0.71000
COMMENTS: Fine-grained phase o f pegmatite.
. -
*
**
1666 x
Tucumcari basin
C i t iS
ee
s rvice
No. 1 g r a n i t e
Rio Brazosarea
Lagunitas Creek Quad
# 286
1985
whole-rock
granite
Muehlberger e t al.,
Harding mine area
TrampasQuad
# 300
1966
Bar Y dome area
B a r Y RanchQuad
COMMENTS:
**
1673 t 41
whole-rock
Picuris Mountains
Hardingminearea
quartz monzonite
Rana
Monzonite
Quartz
Long, 1974
Trampas Quad
isochron
COMMENTS: Data reinterpreted from Fullager
and Shiver, 1973. Isochronof 4 samples.
# 302
1688 LC 33
**
Tusas Mountains
Rio Brazos trondhjemite
al.,
isochron
COMMENTS: Isochron o f 6 samples p l u s 2
# 308
**
1708 d
P i c u r i s Mountains
Glenwoody Formation
model
whole-rock
trondhjemite & hornblendite Rio
Barker
et
1974
0.70260 .L 0.00020
hornblendites.
whole-rock
metarhyolite
Brookins e t al.,
0.71000 I
Brazosarea
Lagunitas Creek Quad
# 319
1985
P i l a r area
Quad
Carson
COMMENTS:
1730 * 110
**
de
S. Sangre
C r i s t o Mtns
Vadiro Group amphibolite
isochron
# 328
whole-rock
amphibolite
Truchas
Ward, 1990
0.70473
0.00017
Peak area
Truchas Peak Quad
whole-rock
felsic schist
Brookinsetal.,
0.71000
Hardingminearea
Trampas Quad
*
COMMENTS:
**
1739 i
P i c u r i s Mountains
Vadito Group s c h i s t
model
COMMENTS:
*
# 332
1985
*
1800
50
**
whole-rock
q u a r t zl a r i t e
Nacimiento Mountains
Pedrosan
metavolcanics
Brookins,
1974a
isochron
15.00000
0.00150
COMMENTS: Preliminary age of 6 samples. Location unknown.
*
# 343
N. NacimientoMtns
Nacimiento Peak o r ReginaQuad
**
1830 z 170
whole-rock
Jemez
granite-veined
Fenton
amphibolite
Mountains
GT-1 amphibolite
Brookins
and Laughlin, 1976
isochron
0.70500 T 0.00200
COMMENTS: Isochron o f 10 samples. Approximate location.
# 344
Hill area
Seven Springs Quad
31
Rb-Sr
**
# 345
1840 f 170
whole-rock
gneissic
granodiorite
Nacimienta Mountains
San Pedro Leucogranodiorite
Brookins, 1974a
17.00000 t 0.00150
isochron
COMMENTS: Isochronof 4 samples. Location unknown.
*
**
100
1890
gneiss.
Kilbourne
Hole
xenolith
Abitz
Kilbourne
Hole
isochron
COMMENTS: Isochron of
whole-rock
Qt& charnockite
eranuli
&-at.,
1987
0.70703 T 0.00040
Quad
-
N. Nacimiento
Mtns
Regina
# 346
Kilbourne Hole area
K iHole
lbourne
Quad
C samples.
**
# 347
cleavelandite
1899 .t
Harding mine area
P i c u r i s Mountains
pegmatite cleavelandite-qtz
B a l e s t r i and Brookins, 1985
Hardins.Pegmatite
.
Trampas Quad
model
0.90000 x
COMMENTS: This age i s anomalouslyold,authors
do not discuss. Samples were c o l l e c t e d and analyzed i n l a t e
1970s.
*
**
# 348
whole-rock
amphibolite
Fenton Hill area
and Laughlin, 1983
Seven Springs Quad
0.701CO r 0.00250
and Laughlin, 1976. 8samplesanalyzeddonot
fulfill whole-rock
**
whole-rock
a t & charnockite granulite
A b i t z e t al.,1987
0.70693 i 0.00099
1920
180
Jemez Mountains
GT-1 amphibolite
Brookins
isochron
COMMENTS: These datasupersedeBrookins
criteria.
1990 t 260
Kilbourne Hole
Kilbourne Hole xenolith
isochron
COMMENTS: Isochronof3
2040
samples
**
I190
Kilbourne Hole
Kilbourne
xenolith
Hole
Abitz
et
isochron
COMMENTS: Isochronof
# 349
Kilbourne Hole area
Kilbourne Hole Quad
whole-rock
f e l gneiss, charnockite granulit Kilbourne Hole area
Kilbourne Hole Quad
al., 1987
0.70683
0.00083
*
5 samvles.
# 350
38
Id. K-Ar ages
Information on each date is displayed in the following format:
AGE AND UNCERTAINTY
MOUNTAIN RANGE
NAME OF UNIT
COMMENTS:
(**)
** = significance of age is uncertain
MATERIAL DATED
ROCK TYPE
REFEmNCE
RECORD #
AREA
7.5' QUAD
39
848 f 42
R a tHt liel lssn a k e
R a tSbt leaeH
tsst a
ienl lrats, k e
K-Ar
**
whole-rock
basa 1t
1985
COMMENTS: Location i s approximare.
Basalt i s unaltered.
**
950 i
Big Burro Mountains
Hombrook Mtn g r a n i t e
#
6
#
8
Rattlesnake Hills area
Rattlesnake Hill Quad
biotite
granite
Hedlund, 1978
Coop mine area
C Bar Ranch Quad
whole-rock
diabase dike
Laughlin et al.,
I c e Caves area
Ice Caves Quad
COMMENTS:
**
951
20
Zuni Mountains
I c e Caves diabase dike
i f 9
1979
COMMENTS:
**
1180 T 25
Pajarito Mountain
Pajarito granite
COMMENTS:
riebeckite
riebeckite granite
Kelley, 1968
P a j a r i t o Mtnarea
Pajarita Mountain Quad
**
1189 i
Pecos slope
Stanolind No. 11-X g r a n i t e
biotite
granite
Muehlberger e t al.,
Hobbs area
HobbsWest Quad
# 22
# 26
1966
COMMENTS:
**
1200 i 25
Pajarito Mountain
P a j a r i t o Mtn pegmatite
hornblende
pegmatitelsyenite
Kelley, 1968
P a j a r i t o Mtn area
Pajarita Mountain Quad
**
1234 r 19
Tusas Mountains
Tres Piedras Granite
COMMENTS:
biotite
granitic gneiss
Gresens, 1975
LasTablas area
LasTablasQuad
**
1272 T 19
Tusas Mountains
Vadito Group
muscovite
qtz-mu-feld schist
Gresens, 1975
LasTablasarea
LasTablasQuad
muscovite
qtz-mu schist
Gresens, 1975
Las Tablasarea
Las TablasQuad
muscovite
musc-bi-gt schist
Gresens, 1975
HondoCanyon area
Taos SW Quad
muscovite
qtz-mu schist
Gresens, 1975
Kiowa Mountain area
Las Tablas Quad
mica
pegmatite
A l d r i c h e t al.,
Harding mine area
Trampas Quad
# 27
COMMENTS:
# 32
# 42
COMMENTS:
**
1272
19
Tusas Mountains
Vadito Group
COMMENTS:
*
**
1273 I 19
P i c u r i s Mountains
RinconadaFormation
COMMENTS: Sample from R 1 s c h i s t .
1307 .t 20
Tusas Mountains
Vadito Group
**
# 43
# 45
# 58
COMMENTS:
*
1309
**
Picuris Mountains
HardingPegmatite
# 59
1957
COMMENTS:
1316 T 20
**
P i c u r i s Mountains
Glenwoody Formation
muscovi r e
qtz-musc s c h i s t
Gresens, 1975
P i l a r area
CarsonQuad
hornblende
h b l - c h l - b is c h i s t
Gresens, 1975
Ancones area
La Madera Quad
7Y
63
COMMENTS:
**
1317 T 15
Tusas Mountains
Vadito Group
COMMENTS:
# 64
40
**
1319 i 20
Tusas Mountains
Vadito Group
COMMENTS:
*
20
**
1319
P i c u r i s Mountains
Embudo g r a n i t e
COMMENTS:
1320 = 43
**
S. Sangre de C r i s t o Mtns
Pecos Complex
COMMENTS: Rb-Sr mineralisochron
**
1321 i 28
Sandia Mountains
Sandia Granite
K-Ar
# 66
muscovite
pegmatite
Gresens, 1975
Kiowa Canyon area
LasTablas Quad
muscovite
granite
Gresens, 1975
South o f E l Valle area
E l V a l l e Quad
# 67
muscovite
feld-musc schist
Ward, 1990
age from Same rock i s 1286
# 69
+
Rio Mora area
Pecos F a l l s Quad
9 Ma.
# 70
biotite
b i o t i t e monzonite
Brookins e t at., 1975
Sandia Crest area
SandiaCrestQuad
muscovite
pegmatire
Gresens, 1975
Bobcat Pass area
Red River Pass Quad
COMMENTS:
**
1326 T 20
Taos Range
Old
Mike
Peak quartz
monzonite
# 74
COMMENTS:
**
muscovite
1328 I
Las Vegas basin
granite
Shamrock No. 1 McArthur g r a n i t e
Muehlberger e t al.,
COMMENTS: Medium grained,two-micagranite.
**
1335 I 20
P i c u r i s Mountains
Alto
Cerro
Vadito Group
of
# 76
1966
muscovite
North
pegmatite
Trampas
Gresens, 1975
Turkey Mountains area
Cerro Negro Quad
# 81
Quad
COMMENTS:
1338
r
**
S. Sangre d e C r i s t o Mtns
P i d l i t e pegmatite
mica
pegmatite
A l d r i c he t
# 85
al.,
1957
P i d l i t e mine area
Mora Quad
COMMENTS:
**
1340 I20
biotite
Tusas Mountains
h b l - c h l - b is c h i s t
Vadito Group
Gresens, 1975
COMMENTS: Same sample as UAKA-71-23.
1342 I 28
SandiaMountains
Sandia
et
Brookins
Granite
COMMENTS:
1343 r 27
SandiaMountains
Sandia Granite
**
**
# 89
Ancones area
La Madera Quad
biotite
orbicular granite
al., 1975
# 90
Sandia Crestarea
Quad Crest
Sandia
# 91
biotite
orbicular granite
Brookins e t al., 1975
SandiaCrestarea
Sandia Crest Quad
biotite
qtz-mu-bischist
Gresens, 1975
Kiowa Mountain area
Las TablasQuad
muscovite
musc s c h i s t
Muehlberger e t al.,
1966
Dexter area
Dexter
East
Quad
1966
North of Santa Rosa
Bar Y Ranch Quad
COMMENTS:
1343 i 21
Tusas Mountains
Vadito Group
**
# 92
COMMENTS:
1348 E
Pecos slope
**
# 95
COMMENTS:
1358 i
**
Great Plains Province
C i t i e s S e r v i c e No. 1 g r a n i t e
COMMENTS:
biotite
granite
Muehlberger etal.,
~
#I02
~~
Mountains
41
K-Ar
**
1358 T
biotite
Oscura Mountains
granitic gneiss
Sun No. 1 Bingham S t a t ge r a n i t e
Muehlberger e t al.,
COMMENTS: From subsurface "central granite belt."
1358 i
SandiaMountains
Sandia
e t A lGd r ai cnhi t e
**
# I 03
1966
mica
granite
North of OscuraMountains
WryePeak SW Quad
#I04
1957
al.,
Placitas area
P l a c i t a s Quad
COMMENTS:
**
1368 =
OscuraMountains
Oscura Pluton
COMMENTS: Coarse-grained,two-mica
muscovite
granite
Muehlberger e t al.,
granite.
#I11
1966
1368 I
**
biotite
Mountains
Oscura
gneiss granite
SunNo.
1 Bingham S t a t e g r a n i t e
Muehlberger and Denison, 1964
COMMENTS: From subsurface "central granite belt."
*
**
1368
San Diego Mountain
gneiss
Tonuco MtnMuehlberger
COMMENTS: ApproximateLocation.
biotite
d i o r i t i c gneiss
e t al.,
1380 T 45
**
Big Burro Mountains
Burro Mtn g r a n o d i o r i t e
COMMENTS:
biotite
granodiorite
Marvin e t al.,
Mockingbird Gap area
Mockingbird Gap SE Quad
#I12
North of OscuraMountains
WryePeak SW Quad
# I 13
1966
Tonuco Mounrain area
Selden Canyon Quad
# I 19
Bear Canyon area
B u l l a r d Peak Quad
1988
1384 .L 29
**
muscovite
areaRincon
metasedimentary
rock
Sandia Mountains
Juan Tab0Brookins
Series
and Shafiqullah, 1975
Sandia Crest Quad
COMMENTS: Metasedimentaryrockfromcontactaureole
of Sandia Granite.
#I22
1388 i
**
San AndresMountains
San Andres p l u t o n
COMMENTS:
#I24
biotite
granitic gneiss
Muehlberger e t al.,
1966
1392 i 29
**
muscovi r e
SandiaMountains
pegmatite
Rincon pegmatite
Brookins and Shafiqullah, 1975
COMMENTS: Pegmatite from metamorphic rocksnearSandiaGranite.
San Andres Peak area
san Andres Peak Quad
#I25
Rinconarea
Sandia
Crest
Quad
~
1408 =
**
San Andres Mountains
RhodesCanyon g r a n o d i o r i t e
#I40
biotite
granodioritic gneiss
Muehlberger e t a l . , 1966
RhodesCanyon area
T i p TopCanyon Quad
biotite
s i l l - g t gneiss
Hedlund, 1980
B u l l a r d Peak area
Redrock NE Quad
COMMENTS:
**
1410
50
Big Burro Mountains
B u l l a r d Peak Series
*
#I41
COMMENTS:
~~_______
**
1410 i 50
Big Burro Mountains
B u l l a al.,
r d Peak
etMarvin
Series
Bullard
biotite
gneiss
#I42
Peak area
B u l l a r d Peak Quad
1988
COMMENTS:
**
1424 x 30
muscovite
Sandia
pegmatite
Brookins
Rincon
and Shafiqullah, 1975
COMMENTS: PegmatitefrommetamorphicrocksnearSandiaGranite.
#I52
Sandia Crest Quad
**
1550 t
biotite
Big Burro Mountains
granite
Burro Mtn g r a n i t e
Hedlund, 1978
COMMENTS: U-Pb z i r c o n age f o r t h i s g r a n i t e i s
1445
#239
i
area Round Mountain
Gold Hill Quad
15 Ma (Stacev and Hedlund, 1983).
42
Ie. Ar-Ar ages
Information on each date is displayed in the following format:
AGE AND UNCERTAINTY
MOUNTAIN RANGE
NAME OF UNIT
COMMENTS
(**)
** = significance of age is uncemin
MATERIAL DATED
ROCK TYPE
REFERENCE
TYPE OF AGE
AREA
7.5’ QUAD
RECORD #
43
960
r
1
**
muscovite
quartzite
Pedrick,pers.
Taos Range
L a t i r Creek q u a r t z i t e
corn.,
Ar-Ar
# 10
1992
plateau
L a t i r Creek area
Cerro Quad
# 11
1992
DlateaU
Cedro Canyon area
C o s t i l l a Quad
1992
Cedro Canyon area
Costi 1 l a Quad
COMMENTS:
**
964 I1
TaosRange
Cedro Canyon gneiss
COMMENTS:
1005
r
1
**
muscovite
gneiss
Pedrick,pers.corn.,
plateau
# 13
muscovite
quartzite
Pedrick,
pers.
corn.,
TaosRange
Cedro Canyon q u a r t z i t e
COMMENTS:
1258
*
1
**
Cimarron Range
Tolby Meadou t e c t o n i c u n i t
COMMENTS: From 240 m from Tolby
Ma.
*
muscovite
plateau
# 37
S. Tolby Creek area
quartzite
Grambling and Dallmeyer, i n prep.
Touch-Me-Not Mtn Quad
Creek shear zone, along eastern edge of Tolby Creek. Total-Gas Age = 1258+1
**
1268
1 plateau
muscovite
Cimarron Range
q u a r tgzni teei s s i c
2 km W o f C l e a r Creek
Touch-Me-Not Mrn Quad
Eagle
Nest
tectonic
unit
Grambling and Dallmeyer, i n review
COMMENTS: Retrogrademuscovite.
From 120 m SW of Fowler Pass shear zone, along NE edge of q u a r t z i t e .
Total-Gas Age = 1261*1 Ma.
1306
*
4
**
TaosRange
Cedro Canyon amphibolite
COMMENTS:
3
**
plateau 1326
TaosRange
L a t i r Creek amphibolite
hornblende
amphibolite
Pedrick,pers.
hornblende
amphibolite
Pedrick,
pers.
corn..
1992
plateau
Cedro Canyon
C o s t i l l a Quad
# 40
# 57
#73
comnun.,
1992
L a t i r Creek
Cerro
Quad
COMMENTS:
*
1338 3
**
plateau
muscovite
Manzano Mountains
Monte Largo Canyon
metarhyolite
S e v i l l e t a M e t a r h y o l i t e Fm
Manzano
Peak
Quad
Thompson e t at., 1991
COMMENTS: Mylonite. From 450 m NW of Monte LargoSpring,
i n shear zone b/w N and S tectonometamorphic
sequences.
*
1350
1
**
plateau
Cimarron Range
Cimarron R i v et er c t o n iucn i t
COMMENTS: Ridge 220 m NE ofFowler
muscovite
metarhyolite
South o f Horseshoe mine
Grambling and Dallmeyer, i n press
Touch-Me-Not Mtn Quad
Pass shear zone, adjacent t o banded ironstone.
# 84
# 98
**
muscovite
1361 E 3
plateau
#I05
Manzano Mountains P i p e
schist pelitic
Canyon
S e v i l l e t a M e t a r h y o l i t e Fm
Manzano
Peak
Quad
Thompson e t al., 1991
COMMENTS: D i s c o r d a n t s p e c t r a a r e i n t e r p r e t e d t o r e s u l t
from thermal overprint at
1000-1100 Ma o f system t h a t
cooledthrough A r r e t e n t i o n temps a t -1340-1360 Ma. From 150 m E o f sample G92:6, along N side of Pipe
S tectonometamorphic sequence. Total-Gas-Age = 1357*3 Ma.
Canyon.From
unretrograded aprt of
*
**
1366 2
plateau
muscovite
#I10
Manzano Mountains
Delitic schist
Estadia Canvon
S e v i l l e t a M e t a r h y o l i t e Fm
Manzano
Peak
Quad
Grambling,
pers.
corn., 1992
COMMENTS: From 900 m W o f P r i e s t q u a r t z monzonite,fromunretrogradedpartof
S tectonometamorphic sequence.
Total-Gas-Age = 1357~3Ma.
1394 8 correl.
**
isotope
hornblende
#I26
Cimarron Range
amphibolite
blw Tolby and Clear creeks
EagleNest t e c t o n i c u n i t
Touch-Me-Not Mtn. Quad
Grambling and Oallmeyer, i n press
COMMENTS: Retrogradehornblende.Within
a t h i n lensofgneissicamphibolite,alongcontact
between gneissic
q u a r t z i t e and quartzofeldspathic gneiss, 480 m SW o f t r a c e of Fowler Pass shear zone. Total-Gas-Age = 1413.r8
Ma.
**
1401 T 2
plateau
hornblende
Cimarron Range
amphibolite
West o f C l e a r Creek
Eagle
Nest
tectonic
unit
Grambling and Dallmeyer, i n press
Touch-Me-Not Mtn Quad
COMMENTS: Retrogradehornblende.
From a continuouslayer of amphibolite i n quartzofeldspathic gneiss,
of ridge crest. Isotope correlation
age = 1398-4 Ma. Total-Gas-Age = 1388a3 Ma.
#I33
180 m W
44
1402 I 1
** plateau
muscovite
SandiaMountains
granite
Sandia Granite
Grambling,
pers.
corn., 1992
COMMENTS: NU edge o f SandiaGranite,
Juan Tab0 p i c n i c area.Total-Gas-Age
1423 f 2
**
muscovite
SandiaMountains
quartzite
muscovite
qCuiabrot zl ai t e
Grambling,
pers.
corn., 1992
COMMENTS: From N-trending canyon 0.4 km
NU
of Seven s p r i n g s p u l l o f f f r o m
Ar-Ar
#I34
Juan Tab0 picnic area
Sandia Crest Quad
= 128512 Ma.
plateau
#I50
Seven Springs
T i j e r a s Quad
US-66. Total-Gas-Age = 1410+2 Ma.
correl. 1438 I5
**isotope
hornblende
#I65
Manzano Mountains
amphibolite
Pipe Canyon area
Fm
Thompson e t al., 1991
S e v i l l eMt ae t a r h y o l i t e
ManzanoPeak Quad
COMMENTS: I s o t o p e c o r r e l a t i o n age i s 36/40 vs 39/40. Total-Gas-Age = 1449k.3 Ma. From westernmost maficlayer
exposedon N side of Pipe Canyon; unretrograded part of
S tectonometamorphic sequence. I s o t o p e c o r r e l a t i o n
age i s i n t e r p r e t e d t o be time sample cooledthroughabout
500°C.
**
1692
2
plateau
hornblende
#311
Cimarron Range
quartz-diorite
U. ofPalisadesarea
Clear Creek q u a r t z - d i o r i t e
Grambling and Dallmeyer, i n press
Touch-Me-Not Mtn Quad
COMMENTS: From 140 m E of contact with Cimarron River granitic pluton. Cimarron River tectonic
unit. Isotope
c o r r e l a t i o n age = 1678x4 Ma. Total-gas Age = 1668rc3 Ma.
45
If. Miscellaneous ages (note: these data are not listed in Part 2)
Information on each date is displayed in the following format:
AGE & UNCERTAINTY (**)
MOUNTAIN RANGE
NAME OF UNlT
ROCK TYPE
AREA
REFERENCE 1
REFERENCE 2
COMMENTS:
ISOTOPIC METHOD QUADRANGLE
COUNTY
USED
LAT-LONG
LAB
MET
DEFORM
TYPE OF AGE
MATERIAL
DATED
T-R-SECTION
REPORTED
RECALCULATED
AGE
AGE
100,OCQ SHEET
UTM COORDS
DECAY
CONSTANT@)
'2 SHEET
TYPE OF REF
OUTCROP OR DRILLHOLE NAME
** = significance of age is uncertain
REPERENCE 3
act
46
**
620 .e
Pb-alpha
L i t t l e HatchetMtns
Pb-alpha
L i t t l e Hatchet
zircon
granite
granite
Animas
N ofHatchet Gap unpublished Douglas
Dane,1957,unpub.
USGS report
COMMENTS: Darkgray,
Peak Quad
USGS
620 =
4
porphyritic,hornblendegranite.Purplezircons.
1400 I
**
SandiaMountains
Sandia Granite
Albuquerque
monzonite
quartz
unknown area
Brookins, 1974c
Poupeau, 1969
COMMENTS: Data arefrom
*
Hatchet
Hidalgo
Big
108'25.5'
31'44'
29s
16W 36
3514000 744000
F iBs e
s ironna-l ti lrlaoc k
Fission-track
sphene
Quad
1400
4
Albuquerque
Poupeau,1969.
T
Naeser, 1971
Apatiteyieldedfission-track
age of 50 Ma.
**
250
QuadBecker
Valencia
Pb-alpha
1500
Los PinosMountains
Pb-alpha
S e v i l l eM
t ae t a r h y o l i t e
Fm
zircon
Socorrometarhyolite
Socorro
unknown area
Marvin and Dobson, 1979
COMMENTS: Collected by
R.S.
*
175
**
1550
P i c u rPb-alpha
i s Mountains
Vadito Group
metaconglomerate
Hardingminearea
Marvin and Dobson, 1979
34'28'
106°30'
3815850 362350
paper
Y Y
1500 I_ 250
23845.4~10-11 235=97.1x10-11
Cannon.
Pb-alpha
zircon
Taos
Taos
11E
Taos
105'47.5'
36'11'
23N
32
4004400 428800
paper
COMMENTS: Probably d e t r i t a lz i r c o n s .S i g n i f i c a n c e
unknown.
TrampasQuad
USGS
1550 x 175
238=15.4x10-11
Y Y
235=97.1x10-11
4
Collectedby
L.R.
stieff.
Age reported by
Marvin, 1968.
1770 i 70
Sandia Mountains isochron
T i j e r a s Greenstone?
metabasalt
T i j e r a s Canyon
Nelson and DePaolo, 1984
COMMENTS: end
= +5.2.
Bernalillo
T i j e r a s Quad
1770
Albuquerque
Albuquerque
abstract
70
Y
Y
70
Y
Y
Y
Y
4
Location and unit unknown.
*
1770
70
Manzano Mountains
S e v i l l e t a M e t a r h y o l i t e Fm?
metarhyolite
unknown area
Nelson and DePaolo, 1984.
COMMENTS: End
Sm-Nd
sm-Nd
isochron
Quad
1770
*
4
= +5.2. Location and u n i t unknown.
**
1810
San Andres Mountains
L i t t l e San
whole-rock
gneiss
Nicolas
gt gneiss
Goat Mtnarea
Roths, 1991
*
Sm-Nd
model
White Sands
LasCruces
DonaAna
32'36'04''
106'27'57"
20s
5E
6
3607260 362500
paper
BennetMountainQuad
U. o f TX, D a l l a s
1810
T
4
COMMENTS:
~~
4460 T 300
**
Big Burro Mountains
Round Mountain
diabase
dike
plagioclase
diabase
Lordsburg
dike
Round Mountain
City
Silver
area
Marvinet al., 1988
K-Ar
Hidalgo
32'29.23'
108'33.89'
21s
17w
11 s
3596900 728900
paper
COMMENTS: Spurious age due t o excess radiogenicargon.
~~
Gold Hill Quad
USGS
4460 I 300
R = 4.962 x 10 -10/yr
4
E
= 0.581 x 10
47
4460 I 450
**
K-Ar
Big Burro Mountains
Round Mountaindiabasedikeaugite
diabase dike
Lordsburg
Round Mountain area
S i l v e r City
Marvinet al., 1988
Hidalgo
108O33'
32'29'
21s
17u
11
s
3596900 728900
paper
Miscellaneous
Gold Hill Quad
USGS
4460 r 450
S = 4.962 x IO-lO/yr
I/
COMMENTS: Spurious age due t o excess radiogenic argon.
5253 r
**
P i c u r i s Mountains
HardingPegmatite
pegmatite
Raton
areamine
Harding
Brookins e t al., 1979
COMMENTS: Anomalously o l d age.
Rb-Sr
isochron
albite
Taos
Taos
36O12.07'
105'47.65'
11E
23N
29
4005450 428600
Trampas Quad
UNM
5253 I
87=1.42x10-11/vr
E
= 0.581 x10-IO/
48
PART II
Comprehensive List of Isotopic Age Determinations
in Order of Increasing Age
This list is the master list of all data collected for all agedeterminations in the computerized database.
Information on each date is displayed in the following format:
AGE & UNCERTAINTY (**)
MOUNTAIN RANGE
NAME OF UNIT
ROCK TYPE
AREA
REFERENCE 1
REFERENCE 2
COMMENTS:
ISOTOPIC METHOD
TYPE OF AGE
M A T W A L DATED
100,OWSHEET
2" SHEET
COUNTY
LAT-LONG
T-R-SECTION
UTM COORDS
TYPE OF REF
REFERENCE 3
RECORD #
QUADRANGLE
LAB USED
METAMOR.DEFORMED
REPORTEDAGE
RECALCULATED AGE
DECAY CONSTANT@)
OUTCROP^) or DRILLHOLE NAME
49
**
626 t
Rb-Sr
F l o r i d a Mountains
model
South Peak a l gk raal in i t e
whole-rock
quartz syenite
Deming
South Peak area
paper
Las Cruces
Brookins, 1974b
Brookins and C o r b i t t , 1974
Luna
32O4.02'
107'33.93'
26s
7W
9
3550550 257700
ALL DATA
South Peak Quad
UNM
640
626
87=1.39x10-11/yr
*
#
1
#
2
#
3
#
4
T
4
COMMENTS:
**
Rb-Sr
Taos
L a t i r Peak Quad
670 T
USGS
Taos Range
isochron
105'52.6'
36'51'
670
Comanche Point gabbro
whole-rock
gabbro
4078000
Wheeler Peak
466000
Comanche Point area
Raton
map
4
Lipnan and Reed, 1989 ( c i t e d a s w r i t t e n corn., 2.E. Peterman, 1984)
*
COMMENTS: Preliminaryisochron.
**
685
F l o r i d a Mountains
South Peak a l k agl ir a n i t e
alkaligranite
South Peak areaLasCruces
Brookins, 197413
Brookins and C o r b i t t , 1974
*
Rock i s altered. Near confluence of Costilla
Rb-Sr
model
whale-rock
Deming
Luna
32'2.57'
107'39.97'
26s
8W
16
3548100 248250
paper
Rb-Sr
model
whole-rock
Deming
Las Cruces
Luna
32O6.83'
107'37.87'
25s
8W
24
3555900 251750
paper
Rb-Sr
isochron
m i c r o c l i n29
e
Taos
Taos
36'12.07'
105'47.65'
11E 23N
4005450 428600
and L a t i r c r e e k s .
South Peak Quad
UNM
700 t
685
87=1.39x10-11/yr
3
4
COMMENTS:
**
685
F l o r i d a Mountains
South Peak agl kr a n
l ii t e
alkaligranite
South Peak area
Brookins, 1974b
Brookins and C o r b i t t , 1974
*
South Peak Quad
UNM
685
700
87=1.39x10-ll/yr
*
T
4
COMMENTS:
*
**
718
P i c u r i s Mountains
HardingPegmatite
Desmatite
Raton
areamine
Harding
Brookins e t a l . , 1979
Trampas Quad
UNM
718 T
87=1.42x10-11/vr
# 5
COMMENTS: High scatter of data.
**
848 x 42
Rattlesnake Hills
Rattlesnake
basalt
whole-rock
Hills
basa lt
F o r tR
a raet taH
l ei lsl n
sake
Setter, 1985
K-Ar
Rattlesnake
Torrance
34'34.1'
105'49.4'
4N
11E
18
Vaughn
3825350 424450
Sumner
abstract
COMMENTS: Location i s approximate.Basalt
Luna
3 2 ~ 1 . 6 71 0 7 9 3 a . n /
26s
8W
22
3546450 250250
paper
**
950 2
Big Burro Mountains
Hombrook Mtn gbriaont i t e
granite
Coop mine area
Hedlund, 1978b
Grant
32'26.89'
108°30.2'
21s
16W
29
3592850 734750
map
COMMENTS:
Lordsburg
S i l v e r City
#
6
#
7
No
4
i s unaltered.
**
Rb-sr
852 T
Florida Mountains
model
South Peak a l k agl ri a n i tweh o l e - r o c k
a l k a l ig r a n i t e
Deming
South Peak area
LasCruces
Brookins, 1974b
Brookins and C o r b i t t , 1974
COMMENTS:
K-Ar
Hill Quad
Kriti, Houston
848 + 42
South Peak Quad
UNM
870 i
852
87=1.39xIO-l1/yr
.L
4
C Bar Ranch Quad
USGS
950
4
T
# 8
50
**
951 i 20
ZuniMountains
I c e Caves diabase
whole-rock
dike
dike
diabase
I c e Caves area
Laughlinetal.,
1979
ALL DATA
Cibola
34O59.451
108°01.45'
11W 9N
20
Fence Lake
3875900 771675
Saint Johns
paper
K-Ar
Ice
Caves Quad
o f Arizona
951 i 20
R=4.963x10-10/yr
#
u.
9
~=0.581x10-1O/yr
4
COMMENTS:
**
Ar-Ar
960 T 1
Tam Range
plateau
L a t i r Creek quartzite
muscovite
quartzite
Wheeler Peak
unpublished
L a t iRaton
r Creek area
Pedrick,personalcomnunication,
1992
Taos Quad
36O49.57'
105°30.92'
# 10
Cerro
U. of Georgia
960 * 1
Y
Y
4
COMMENTS:
Range
964 t 1
**
Tans
Cedro Canyon muscovite
gneiss
gneiss
unpublished
Cedro
Raton
Canyon area
Pedrick,personalcomnunication,
Ar-Ar
plateau
Taos
36O55.12'
# 11
C o s t i l l a Quad
105"30.62'
U. o f Georgia
964
Wheeler Peak
t
1
Y
Y
4
1992
COMMENTS:
*
986
29
** LadronSocorro Rb-Sr
isochron
LadronMountains
Capirote Granite
whole-rock
Magdalena
quartz monzonite
Socorro
W o f Ladron Peak
White, 1977
COMMENTS:
Peak Quad
Miami Univ.
986
1007 1: 30
87=1.39x10-11/yr
107'6'
34'26'
3.2W2,3N
thesis
4
Taos
36'55.22'
105°30.89'
u.
# 12
+ 29
Isochron o f 2 samples.
*
1005
1
**
TaosRange
Cedro Canyon q u a r t z i t e
quartzite
Cedro Canyon area
unpublished
Pedrick,personalcomnunication,
Ar-Ar
olateau
muscovi r e
Wheeler Peak
Raton
1992
# 13
C o s t i l l a Quad
o f Georgia
1005
1
*
-
Y
Y
4
COMMENTS:
**
Rb-Sr
1013 E 242
San Andresloscura Mtns
isochron
Mockingbird Gap pluton
whole-rock
quartz monzonite
Mockingbird Gap area Tularosa
White,1977
Sierra, SOC.,
Linc.
Quad
Miami univ.
1035 r 242
1013
87=1.39x10-11/yr
thesis
4
Rb-Sr
model
whole-rack
Deming
LasCruces
Luna
32'1.73'
107'35.32'
7W
19
26s
3546350 255550
paper
South Peak Quad
UNM
1038
1060 T
87=1.39x10-11/yr
Rb-Sr
isochron
p e r t h i t e 29
Taos
Taos
36°12.07r 105'47.65l
11E 23N
4005450 428600
# 14
I_
242
COMMENTS: Isochron of 5 samples.
**
1038 i
Florida Mountains
South Peak a l k a l i g r a n i t e
alkaligranite
South Peak area
Brookins, 1974b
Brookins and C o r b i t t , 1974
COMMENTS:
*
**
6
1121
Picuris Mountains
HardingPegmatite
eesmatite Derthite zone
Raton
HaFding
areamine
Brookins e t al., 1979
COMMENTS:
# 15
I
4
Trampas Quad
UNM
1121 z 6
87=1.42x10-11/vr
# 16
51
**
1128 t 44
Sandia Mountains
bSandia
iotite Granite
orbicular granite
Albuquerque
paper
areaCrest
Sandia
Brookins e t at., 1975
Rb-Sr
model
Albuquerque
ALL DATA
Bernalillo
35'12.95'
106'28.12'
4E 11N
1
3897750 366300
# 17
SandiaCrestQuad
UNM
1152 t 45
1128 t 44
87=1.39x10-11/yr
4
COMMENTS: B i o t i t e i s p a r t i a l l y c h l o r i t i z e d .
*
**
Guadalupe
Rb-Sr
1139
Tucumcari basin
104'25.5'
34'55'
Husky-General No. 1 granite
whole-rock
24E 8N
16
granite
Santa Rosa
3863700 554000
E o f Santa Rosa
Fort Sumner
paper
Muehlberger e t al., 1966
Callenderetal.,
1976
Harben take Quad
Austin
1100
1139
87=1.47x10-11/yr
U. o f TX,
*
# 18
=
COMMENTS:
*
**
1139
Delaware basin
Continental No. 1-E gneiss
g n e i s sg r a n i t i c
Eunice area
Muehlberger e t at., 1966
Jal
Rb-Sr
Lea
biotite
21s
Hobbs
37E110027
Continental
paper
Eunice Quad
U. o f TX, A u s t i n
Y Y
r
1139
87=1.47xlO-ll/yr
No. I - E Lockhart
# 19
Peak Quad
Miami Univ.
1143 t 56
1168 T 57
87=1.39x10-11/yr
# 20
*
COMMENTS:
*
paper
56
** LadronSocorro Rb-Sr
1143
Ladron Mountains isochron
Ladronmetavolcanicsequencewhole-rock
f e l s i cs c h i s t & amphibolite
Magdalena
Ladron
SocorroPeak area
White, 1977
COMMENTS:
Isochronof
34O26'
2.3N 2W
107°04'
Y
Y
4
8 samples.
**
1175 i 15
Pajarito Mountain
Pajarito granite
grri e
ab
ne
i t cek i t e
P a j a paper
r i t oRoswell
Peak area
DenisonandHetherington,
Mountain
Pajarito
Otero
33V4.13' 105'25.8'
feldspar
12s
1135
25.2
15E
Ruidoso
3677300 459950
Quad
Rb-Sr
Mobil,
Dallas
2 15
1175
87=1.47xlO-ll/yr
*
# 21
15
4
1969
COMMENTS:
1180 i 25
**
Pajarito Mountain
r i e b e cgkr a
i t ne P
ite
ajarito
grri e
ab
ne
i t cek i t e
P a j a r i t o Mtn area
Kelley, 1968
DenisonandHetherington,
COMMENTS:
K - AMountain
r
Pajarita Otero
33'14.13'
105'25.8'
12s 25,2
15E
Ruidoso
3677300 459950
Roswel I
paper
*
# 22
+ 25
4
1969
*
area
Quad
Mobil,
Dallas
1170
25
1180
13=4.72xlD-I0/yr
62
**
1183
P i c u r i s Mountains
Rana Quartz Monzonite
granite
425440 4003500
iafioncito
paper
Fullager and Shiver, 1973
Rb-Sr
Trampas
isochron
bi-feld-w.r.
Taos
Raton
Taos
36'10.5
105'49.75'
10E 22N
1
Quad
UNC
1183
1208 I63
87=1.39x10-ll/yr
# 23
*
62
4
COMMENTS:
1185
i
**
S. Sangre de C r i s t o Mtns
Embudo g r a n i t e
granite
RatonCordova area
Brookinsetal.,
1985
Register andBrookins,
COMMENTS:
1979
Rb-Sr
model
whole-rock
Taos
Santa Fe
36°00.12' 105°52.05'
10E
20N
3
3984300 421800
paper
TruchasQuad
UNM and UNC
1185 T
87=1.42x10-11/vr
4
# 24
52
*
1186
23
**
P i c u risochron
i s Mountains
Peiiasco Quartz Monzonite
granite
Rio Lucio area
Fullager and Shiver, 1973
COMMENTS:
Taos
36"11.83' 105O44.13'
23N
11E
26
4004100 433860
paper
Rb-Sr
bi-feld-w.r.
Taos
Raton
Isochronofmineralseparates
ALL DATA
Peiiasco Quad
UNC
1212 t 23
1186
87=1.39x10-11/yr
# 25
T
23
I/
and whole-rock.
**
West K - A r Hobbs
1189 i
Pecos slope
Stanolind No. 11-X g r a n i t e
biotite
granite
Hobbs
Hobbs area
Hobbs
Muehlberger e t al., 1966
Lea
32O42.5'
103°10'
19s
38E
4
3620000 672000
paper
# 26
Quad
U. o f TX, A u s t i n
*
1180
1189 r
R=4.72x10-10/yr
~=0.585x10-10/yr
Stanolind no. 11-X State 'A'
COMMENTS:
~~
~~
1200 t 25
**
K-ArMountain
Pajarita Otero
33'14.2'
105'25.83'
Mobil.
Dallas
Paiarito Mountain
12s 2515E
1190 2 25
P a i a r i t o Mtn pegmatite
hornblende
3677450 460000
Ruidoso
pegmatitelsyenite
P a j a r i t o Mtnpaper
Roswell
area
I/
Kelley, 1968
McLemore and McKee, 1988
Denison and Hetherington, 1969
COMMENTS:
**
Rb-Sr
1201 i
Delaware basin
Socony Mobil No. 95 graniteK-feldspar
granite porphyry
Hobbs
Buckeye area
Hobbs
Muehlberger e t al., 1966
Lea
1200
Buckeye Quad
o f TX, A u s t i n
1201
1160 *
87=1.47x10-11/vr
u.
17s
34E
26
# 27
Quad
*
25
# 28
*
paper
COMMENTS:
*x
Rb-Sr
1211
Delaware basin
whole-rock
Stanolind No. 11-X granite
Hobbs
granite
Hobbs area
Hobbs
Muehlberger e t al., 1966
Lea
J_
19s
38E
4
pawer
West Hobbs
Quad
U. of TX, A u s t i n
1170 T
1211 I
87=1.47x10-11/yr
Stanolind No. 11-X State 'A'
# 29
COMMENTS:
**
1214
F l o r i d a Mountains
South Peak a l k agl ir a n i t e
granite alkali
paper CrucesSouth
Las Peak area
Brookins, 1974b
Brookins and C o r b i t t , 1974
Rb-Sr
model
whole-rock
Deming
Luna
32'1.49'
107°33.1'
265
7W
21
3545850 258850
South Peak Quad
UNM
1240 i
1214
87=1.39x10-11/yr
# 30
=
I/
COMMENTS:
1230 .L 130
**
Sangre de C r i s t o Mtns
Rinconada
Formation
s c hpies lti t i c
area
Pecos Baldy
Ward, 1990
Ward, 1986
COMMENTS:
S.
**
Tablas
1234 t 19
Tusas Mountains
PG
i be
Tridraoerntasiitstee
granitic gneiss
Las
Gresens, 1975
COMMENTS:
Rb-Sr
min isochron
min. separates
Santa Fe
Santa Fe
Mora
35'54'08.
K-Ar
Rio
36'34.0'
106'02.5'
27N
13
4047150 406800
Arriba
8E
Chama
105°40'00.
3973000 439500
paper
Truchas Peak Quad
UNM
1230
130
*
# 31
Y
Y
I/
Quad
Las Tablas
U. Arizona
of
1234 2 19
I/
# 32
Y
Y
53
**
1243 i 170
San Andres Mountains
Mayberry
whole-rock
Pluton
monzonite
White
quartz
Mayberry Canyon area
White, 1977
COMMENTS:
Rb-Sr
isochron
Ana
ALL DATA
Doria
Gardner Peak Quad
Miami Univ.
1270
171 1243
87=1.39x10-11/yr
*
Sands
Las Cruces
# 33
I_
170
I/
thesis
Isochronof 6 samples.
**
1246 9 40
P i c u r i s Mountains
Pegmatite
Harding
pegmatite
Harding mine area
Brookins e t a l , 1979
Rb-Sr
Trampas
isochron
l e p i29
d o l i t e 11E
Taos
Raton
Taos
3b012.07'
23N
4005450 428600
Quad
UNM
1246 T 40
87=1.42x10-11/yr
paper
I/
105°47.65'
# 34
COMMENTS:
**
Rb-Sr
1247 .L 62
Magdalena Mountains
isochron
Maudalena whole-rock
Granite
granite
Magdalena
paper
Jordan
Socorro
Canyon area
White, 1978
White, 1979
COMMENTS: Isochron of 6 samples.
-
1253
i
**
28
S. Sangrede
C r i s t o Mtns
whole-rockFormationRinconada
pelitic schist
Pecos
Santa
area
Baldy
Ward, 1990
Ward, 1986
Socorro
107°10'34'5'
2.3s 3W
Magdalena Quad
Miami Univ.
1274
63
1247
87=1.39x10-11/yr
*
# 35
*
62
No
I/
Brookins, 1982
Rb-Sr
isochron
Mora
35'54'08.
Santa Fe
Fe
3973000
paper
105°40'00.
439500
Truchas Peak Quad
UNM
1253 T 28
# 36
Y
Y
I/
COMMENTS:
**
1258 t 1
Ar-Ar
plateau
Cimarron Range
Tolby Meadow t e c t o n i c unit
muscovite
quartzite
Wheeler Peak
Raton
S. Tolby paper
Creek area
Grambling and Dallmeyer, i n press, JMG
COMMENTS:
From240
Ma.
m from Tolby
1264 t 128 **
P i c u r i s Mountains
HardingPegmatite
Desmatite
Harding mine area
Brookinsetal.,
1979
. -
Colfax
36O30.07'
105"13.05'
*
# 37
Y
Y
I/
Creek shear zone, along eastern
Rb-Sr
isochron
rose muscovite
Taos
Raton
Touch-Me-Not Mtn Quad
U. o f Georgia
1258
1
Creek. Total-Gas Age = 1258+1
edge of Tolby
Taos
36'12.07'
105'47.65'
23N
11E
29
4005450 428600
paper
# 38
Trampas Quad
UNM
1264 + 128
87=1.42xl0-ll/yr
I/
COMMENTS:
**
KIAr
1266 .L 42
S. Sangre de C r i s t o Mtns
Vadito Group
15
muscovite
12E
qtz-musc s c h i s t
Santa Fe
Truchas Peak area
Santa Fe
Ward, 1990
Ward, 1986
COMMENTS: Rb-Sr mineral isochron age from Same
Mora
3597153. 105°38r40.
20N
3980025 441900
paper
**
Ar-Ar
1268 L 1
Cimarron Range
plateau
EagleNest t e c t o n i c unit
muscovite
gneissic quartzite
Wheeler Peak
2 km W of Clear Creek
Raton
Grambling and Dallmeyer, i n press, JMG
Colfax
36'31.2'
rock i s 1352
I
Truchas Peak Quad
Krueger
1266
42
Y Y
0=4.962x10-10/yr
~=0.581x10-10/yr
*
I/
26 Ma.
# 40
Touch-Me-Not
Quad
Mtn
105°11.43'
U. o f Georgia
1268
paper
# 39
*
1
Y
Y
I/
COMMENTS: Retrogrademuscovite. From 120 m SW o f Fowler Pass shear zone, along NE edge o f q u a r t z i t e .
Total-Gas Age = 1261+1 Ma.
54
ALL DATA
1270 t
**
Rb-Sr
Grant
Big Burro Mountains
32'22.69'
108"29.27'
Burro Mtn
b i o tgi rt a
enite
22s
16W
21
3584900 736300
g n e i s s i c g r a n i t e 8. g r a n i t e
Lordsburg
Langford Mtnsarea
map
S i l v e r City
( c i t e d as J.S. Stacey, 1977, w r l t t e n comnun.)
Hedlund, 1978
-
# 41
C Bar Ranch Quad
USGS
1270 i
Y
Y
I/
COMMENTS:
**
K-Ar
**
1272 x 19
Tusas Mountains
Vadito Group
qtz-mu s c h i s t
Las Tablasarea
Gresens, 1975
K-Ar
1272 t 19
Tusas Mountains
Vadito Group
qtz-mu-feld schist
LasTablasarea
Gresens, 1975
Rio A r r
COMMENTS:
# 43
Arriba Rio
Quad
Tablas Las
u. Arizona
of
36'33.0'
106'03.0'
muscovite 25 8E 27N
1272 r 19
4045300 406050
Chama
Y
Y
COMMENTS:
**
1273
Rh-Sr
Pecos slope
Continental No. 1 Langford s whole-rock
Roswell
muscovite schist
Continental
paperRoswell
Dexter area
Muehlberger e t al., 1966
*
Chaves
East
Quad
Austin
Y Y
1230 =
1273
87=1.47x10-11/yr
No. 1 Langford
# 44
Taos SW Quad
U. Arizona
of
# 45
Dexter
U. o f TX,
14s
26E
2
*
COMMENTS:
1273 9 19
**
P i c u r i s Mountains
Rinconada
Formation
muscovi
musc-bi-gtschist
Canyonpaper
Hondo Raton area
Gresens, 1975
K-Ar
Taos
36'17'
105'42.5'
12E
24N
30
4015400 436400
re
Tans
1273
19
I
Y
Y
I/
COMMENTS: Sample from R1 s c h i s t .
~~~~~~~~~
~~
~~
~~~
**
1281 i
P i c u r i s Mountains
HardinuPeumatite
pegmatite spotted rock
Harding mine
paper
area
B a l e s t r i and Brookins, 1985
"
Rb-Sr
Trampas
Taos
model
36'11.53'
105'47.67r
whole-rock
29
11E 23N
Taos
4005425 428000
Raton
# 46
Quad
UNM
1281 z
87=1.42x10-11/yr
I/
COMMENTS: Samples were c o l l e c t e d and analyzed i n Late 1970s.
1286
.L
9
**
S . Sangre de C r i s t o Mtns
Rb-Sr
isochron
min. separates
13E
Santa Fe
Fe
Pecos Complex
feldspar-musc schist
Santa
Rio Mora area
Ward, 1990
Ward, 1986
COMMENTS: Isochronofseveralmineralseparates.
**
1286
Picuris Mountains
HardingPegmatite
pegmatite
rock
.~ spotted
Harding mine area
B a l e s t r i and Brookins, 1985
*
Rb-Sr
model
whole-rock
29
Tans
Raton
Mora
35'52'51. 105'33'16.
19N
10
3970700 449950
paper
Taos
36'11.53'
105'47.67l
11E 23N
LOO5425 428000
COMMENTS: Samples were c o l l e c t e d and analyzed i n l a t e 1970s.
Pecos F a l l s Quad
UNM
1286 = 9
I/
Trampas Quad
UNM
1286 i
87=1.42x10-11/~r
# 47
Y
Y
55
monzonite
ALL DATA
1291
51
**
Rb-Sr
LadronMountains
isochron
Ladron Granite
whole-rock
2W
Magdalena
granite
Socorro
North o f Ladron Peak
White, 1979
White, 1978
COMMENTS: Isochron o f 7 samples.
Socorro
107O4.5'
34O27'
3N
3815000 309400
paper
**
Rb-Sr
1292 t
model
Florida Mountains
South Peak a l k agl ir a n i t e
whole-rock
Deming
alkaligranite
paper
Cruces
Las
South Peak area
Brookins, 1974b
Brookins and C o r b i t t , 1974
COMMENTS:
Luna
32'1.93'
107'34.32'
26s
W
7
20
3546750 257050
1294 i 161 **
San Andres Mountains
pluton
Mineral Hillwhole-rock
87=1.39x10-11/yr
quartz
Cruces
Mineral Hill area
White, 1977
White,
Rb-Sr
isochron
Las
La?. Cruces
Ladron Peak Quad
Miami Univ.
1319 r 51
1291
87=1.39x10-11/yr
# 49
i
51
I/
1977
South Peak Quad
# 50
UNM
1320
1292
87=1.39x10-11/yr
T
I/
Doha Ana
106'
32'
21s
4E
21,2
White Sands, Organ Quad
Miami Univ.
1322
161
1294 r 161
thesis
I/
Taos
36'11.53'
105'447.67'
23N
29
4005425
428000
Trampas Quad
UNM
1295 T
87=1.42x10-11/yr
# 51
COMMENTS: Isochron of 5 samples.
a
mine
**
1295 r
P i c u r i s Mountains
Harding Pegmatite
pegmatiteborder zone
Harding
B a l e s t r i and Brookins, 1985
Rb-Sr
model
muscovite
Tans
11E
# 52
I/
COMMENTS: Samples were c o l l e c t e d and analyzed i n Late 1970s.
*
paper
ea
**
1300
Sandia Mountains
Sandia
whole-rock
bi,
Granite
quartz monzonite
Albuquerque
Carnue area
Brookins and Majumdar, 1982
Brookins, 1982
COMMENTS: Two-pointmineral
**
1300 =
Picuris Mountains
Harding Pegmatite
pegmati r e
paper
Hardingmine
area
A l d r i c h e t a!.,
1957
Rb-Sr
isochron
Albuquerque
# 53
T i j e r a s Quad
UNM
1300 i
87=1.42x10-111yr
Bernalillo
35'3.8'
106°28.37'
25
ION
4E
3880800 365650
Y
I/
--
whole-rockisochron.
Taos
Rb-Sr
mica
29
Taos
Raton
11E
Taos
36'11.5'N
105"47.6'W
23N
4005400 428600
# 54
Quad
Carnegie I n s t i t u t i o n
1300
*
I/
COMMENTS:
**
1304
P i c u r i s Mountains
HardingPegmatite
pegmatite spotted rock
Harding
B a l e s t r i and Brookins, 1985
*
mine
Trampas
Rb-Sr
model
whole-rock
29
Taos
Taos
36'11.53'
105'47.67'
11E 23N
4005425 428000
Quad
UNM
1304 x
87=1.42x10-11/yr
# 55
d
COMMENTS: Samples were c o l l e c t e d and analyzed i n l a t e 1970s.
**
1304 L
Caballo Mountains
whole-rock
Granite
Caballo
gneissic granite
Caballo dam area
Muehlberger e t ai.,
Rb-Sr
Caballo
Hatch
LasCruces
Sierra
32O53'
107O16.5'
165
4W
29
U. o f TX, A u s t i n
paper
I/
# 56
Quad
1260 T
1304
87=1.47x10-11/yr
.L
1966
COMMENTS: Locarion i s approximate.Condie
and Budding(1979)
c a l l e dt h i su n i tC a b a l l op l u t o n .
Y
Y
56
**
1306 t 4
TaosRange
Cedro Canyon hornblende
amphibolite
amphibolite
Cedro Canyon unpublished
Pedrick,personalcomunication,
ALL DATA
Taos
36O55.13'
105O30.6'
Ar-Ar
plateau
# 57
C o s t i l l a Quad
U. of Georgia
1306 + 4
Wheeler Peak
Raton
1992
Y
Y
I/
COMMENTS:
area
1307 .e 20
**
Tusas Mountains
Vadito Group
qtz-mu schist
Mountain Kiowa
Gresens, 1975
K-Ar
Arriba
muscovite 8E
Charna
Rio
Quad Tablas
3676.0'
106°06.0'
27N
4
4050900
401600
# 58
Las
u.
o f Arizona
1307
*
20
Y
Y
I/
COMMENTS:
**
1309 x
P i c u r i s Mountains
mica
Pegmarite
Harding
pegmatite
Harding mine area
A l d r i c h e t al.,1957
K - A rTrampas
Taos
Raton
Taos
36'11.55'
105'47.66'
11E 23N
130029
4005400
428600
paper
# 59
Quad
*
1309 r
B=4.72x10-10/yr
~=0.557x10-10/yr
I/
COMMENTS:
**
Rb-Sr
T i j e r aBs e r n a l i l l o
1310 t
35O3.8'
106'28.37'
isochron
Sandia Mountains
Sandia Granite
whole-rock
bi,
I O N 25 4E
3880800 365650
Albuquerque
monzonite
quartz
paperAlbuquerque
Carnue area
Brookins and Majumdar, 1982
Brookins, 1982
COMMENTS: Two-pointmineral
whole-rockisochron.
Quad
UNM
1310 i
87=1.42x10-11/yr
# 60
Y
I/
--
~~
1310
i
-
**
260
S. Sanare de C r i s t o Mtns
Pecos Complex
feld-musc schist
Rio Mora area
Ward, 1990
Ward, 1986
Rb-Sr
Pecos Mora
35'52'51. 105°33'16.
isochron
whole-rock
1013E
19N
Santa Fe
3970700 449950
Santa Fe
paper
# 61
F a l l s Quad
UNM
1310
i
260
Y
Y
I/
COMMENTS:
~~~~
Capulin
~
**
Rb-Sr
Union
1314 r
S i e r r a Grande arch
S i e r r a Grande No. 1 g r a nbi itoet i t e
29E
29N
granite
Mountai
Des Moinesarea
Dalhart
paper
Muehlberger e t al., 1966
4
# 62
Quad Des Moines
U. of TX, A u s t i n
1270 i
1314 I:
87=1.47x10-11/yr
S i e r r a Grande No. 1 Rogers
COMMENTS:
1316 t 20
**
P i c u r i s Mountains
Glenwoody Formation
muscovite
qtz-musc s c h i s t
4013600
Pilar area
paper
Gresens, 1975
K-Ar
11E
Taos
Raton
Taos
Quad
36O16'
105O47.5'
24N
3;2
42891DO
Carson
U. Arizona
of
1316 T 20
# 63
Y
Y
I/
COMMENTS:
*
**
1317
15
Tusas Mountains
Vadito Group
h b l - c h l - b is c h i s t
Ancones area
Gresens, 1975
COMMENTS:
Arriba Rio
36'26.0'
106°3.0'
hornblende
8E 25N
1
Abiquiu
4032300
405900
K-Ar
# 64
La Madera Quad
U. Arizona
of
1317
15
I
Y
Y
a
51
1319 i 42
**
Mora
35'57'53.
105'38'40.
20N
15
3980025
441900
paper
Rb-Sr
isochron
*hole-rock12E
Santa Fe
Fe
S. Sangre de C r i s t o Mtns
Vadito Group
quartz-musc s c h i s t
Truchas
Santa
Peak area
Ward, 1990
Ward, 1986
COMMENTS:
1319 T 20
**
Tusas Mountains
Vadito Group
pegmatite
paperarea
Kiowa Canyon
Gresens, 1975
K-Ar
muscovite
Chama
Aztec
ALL DATA
A r r i b aR i o
36O35.0'
106°04.0r
8E 27N
11
4009000
404600
# 65
Truchas Peak Quad
UNM
1319
42
*
Y
Y
I/
# 66
Las
Quad
Tablas
U. of Arizona
1319
i
20
t/
COMMENTS:
**
1319 I 20
P i c u r i s Mountains
Embudo g r a n i t e
granite
South of paper
EL Valle area
Gresens, 1975
Taos
36O4.5'
105O43'
K-Ar
muscovite
Taos
Raton
# 67
EL V a l l e Quad
U.Arizona
of
1319
*
20
3992250 435450
I/
COMMENTS:
**
1320 i
Sandia Mountains
Sandia Granite
quartzmonzonire
paperAlbuquerque
Carnue area
Brookins andMajumdar,1982
Brookins, 1982
COMMENTS: Two-poinrmineral
Rb-Sr
isochron
whole-rock
bi,
Albuquerque
--
T i j e rBa es r n a l i l l o
35"3.78'N
106'28.37'
I O N 25 4E
3880800 365650
**
1320 T
87=1.42x10-ll/yr
Y
4
whole-rockisochron.
**
K-Ar
Pecos
Mora
1320 i 43
35'52'51.
105'33'16.
S. Sangrede C r i s t o Mtns
13E19N
10
Pecos Complex
muscovite
3970700 449950
feld-musc schist
Santa Fe
Rio Mora area
Santa Fe
paper
Ward, 1990
Ward, 1986
COMMENTS: Rb-Sr mineral isochron age from same rock i s 1286 i 9 Ma.
1321 E 28
SandiaMountains
Sandia G
b ri oatni ti tee
b i o t i t e monzonite
Albuquerque
paper
Albuquerque
area
Sandia Crest
Brookinsetal.,
1975
Enz e t al., 1979
# 68
Quad
UNM
K-Ar
4E
Bernalillo
35'12.93'
106'28.05'
11N
1
3897700 366400
# 69
F a l l s Quad
Krueger
Y Y
1320
43
R=4.962x10-10/yr
~=0.581x10-10/yr
I/
# 70
Sandia Crest Quad
U. ofArizona
*
1313 I_ 28
1321
28
R=4.76x10-10/yr ~=5.89x10-11/yr
4
Brookins, 1982
COMMENTS:
**
428000
mine
1324 d
Picuris Mountains
Harding Pegmatite
Desmatite
4005425
Harding
B a l e s t r i andBrookins,
Rb-Sr
model
muscovite
Taos
. -
Taos
105'47.67'
36'11.53'
11E 23N
1324 29
COMMENTS:
=
87=1.42x10-ll/yr
I/
1985
COMMENTS: Samples were c o l l e c t e d andanalyzed
**
1325 .e 76
San Andres Mountains
Capitol Peak whole-rock
Pluton
quartz monzonite
N San Andres Mrns
White,1977
# 71
Trampas Quad
UNM
Rb-Sr
isochron
Tularosa
Tularosa
i n Late 1970s.
Sierra
thesis
Isochron of 7 samples, widely spaced. FromSheep
Strawberry Peak quads.
Quad
Miami Univ.
1353 z 76
1325
87=1.39x10-11/yr
# 72
*
76
I/
Mountain, Capitol Peak, T i p TopCanyon,
and
41'
a
ALL DATA
58
**
1326 3 3
TaosRange
L a t i r Creek hornblende
amphibolite
amphibolite
unpublished
L a t i r Creek
Pedrick,personalcomunication,
#73
Cerro Quad
U. o f Georgia
1326 2 3
Taos
36O49.69'
105°31.19'
Ar-Ar
plateau
Wheeler Peak
Raton
1992
Y
Y
4
COMMENTS:
~~~~~
Range
1326 t 20
**
Taos
MikeOld
Peak quartz monzoni
,oeamatite
Bobcat Pass area
Gresens, 1975
Colfax
K-Ar
Arizona
muscovite
Wheeler Peak
Raton
4059600 470200
# 74
Red River Pass Quad
U. of
1326 T 20
4
COMMENTS:
*
**
Rb-Sr
136
1327
isochron
Magdalena Mountains
whole-rock
Magdalena Granite
Magdalena
granite
paper
Jordan
Socorro
Canyon area
White, 1978
White, 1979
COMMENTS: Isochronof 4 samples.
Socorro
34O5'
2.3s 3W
mine
Magdalena Quad
Miami Univ.
1355 T 139
1327
87=1.39x10-11/yr
# 75
*
136
No
4
Brookins, 1982
**
K-Ar
1328 T
Las Vegas basin
1 gran
muscovite
Shamrock No.McArthur
Springer
granite
Turkey
Mountains
Raton
area
Muehlberger e t al., 1966
Callenderetal.,
1976
COMMENTS: Medium grained,two-micagranite.
**
1329 T
Picuris Mountains
HardingPegmatite
pegmatite
replacement
micas
Harding
B a l e s t r i and Brookins, 1985
107°10'
Mora
36O4'
104"52.5'
21E
19N
12
3991000 511000
paper
Rb-Sr
model
lepidolite
Taos
TaOS
36'11.53'
105'47.67'
23N
11E 29
4005425 428000
Cerro Negro Quad
U. o f TX, A u s t i n
1328 I
1320 I_
w4.72x10-10/yr
e=0.585x10-10/yr
Shamrock No. 1McArthur
# 76
Trampas Quad
UNM
1329 z
87=1.42x10-ll/yr
#TI
4
COMMENTS: Samples were c o l l e c t e d and analyzed i n l a t e 1970s.
**
Rb-Sr
Sandoval
1330 2
35'16.23'
106'28.83'
isochron
Mountains
Sandia
whole-rock
bi,
4E 12N
14
Sandia Granite
Albuquerque
3903850 365300
quartz monzonite
Albuquerque
Caiion d e l Agua area paper
Brookins and Majumdar, 1983
Brookins, 1982
COMMENTS: Two-pointmineral
whole-rockisochron.
P l a c i t a s Quad
UNM
1330 .t
87=1.42x10-11/yr
# 78
Y
4
--
**
1330 =
isochron
Mountains
Sandia
Sandia
whole-rock
bi,
Granite
Albuquerque
monzonite
quartz
Caiion d e l Agua area
Brookins and Majumdar, 1982
Brookins, 1982
COMMENTS: Two-pointmineral
**
1332 T
Mountains
Picuris
Harding Pegmatite
pegmatite spotted rock
Hardingmine
paper
area
B a l e s t r i and Brookins, 1985
COMMENTS: SamplesWere
Rb-Sr
4E
Albuquerque
--
Sandoval
35'16.15'
106'28.83'
12N
14
3903700 365300
paper
P l a c i t a s Quad
UNM
1330 T
87=1.42x10-11/yr
# 79
Y
4
whole-rockisochron.
Rb-Sr
model
whole-rock
Taos
Raton
Tans
36'11.53'
105'47.67'
11E 23N
29
4005425
428000
c o l l e c t e d and analyzed i n Late 1970s.
Trampas Quad
UNM
1332 T
87=1.42x10-11/yr
4
# 80
ea
59
1335 I 20
**
P i c u r i s Mountains
Vadito Group
pegmatite
North
Altoo f Cerro
Gresens, 1975
K-Ar
Trampas
Taos
36"12.0'
105'47.0'
11E23N
28
4006200 429600
muscovite
Taos
Raton
paper
ALL DATA
Quad
# 81
U. of Arizona
1335
i
20
4
COMMENTS:
mine
1336 t 73
**
Picuris Mountains
Pegmatite
whole-rock
Harding
pegmatite spotted rock
Harding
Brookins e t al., 1979
COMMENTS:
Rb-Sr
isochron
29
Taos
11E
Taos
36'12.07'
105'47.65'
23N
4005450 428600
# 82
Trampas Quad
UNM
1336
73
87=1.42x10-11/yr
4
Isochron of 4 samples.
**
1338
26
Rb-Sr
Socorro,
OscuraMountains
isochron
Oscura P l u t o n
whole-rock
biotite granite
OscuraMountain
variousareas
Tularosa
White, 1978
White, 1979
COMMENTS: Isochron of 8 samples.
Lincoln
Trinity site,
Mockingbird
Miami Univ.
1367 & 26
1338 .L 26
87=1.39x10-11/yr
Gap SE Qua# 83
4
paper
White, 1977
~~~~
*
3
**
1338
Manzano Mountains
M eSteavr ihl lyeot lai t e
Fm
metarhyolite
Monte Largo Canyon
paper
Thompson e t al., 1991
Ar-Ar
plateau
muscovite
Belen
Socorro
Valencia
34'36.43'
106'28.62'
ManzanoPeak Quad
U. o f Georgia
1338 i 3
# 84
Y Y
4
COMMENTS: Mylonite. From 450 m NU o f Monte LargoSpring,
i n shear zone b/w N and S tectonometamorphic
sequences.
**
1338 x
S. Sangre de C r i s t a Mtns
mica P i d l i t e pegmatite
pegmatite
P i d l i t e mine area
A l d r i c he ta l . ,
1957
K-Ar
Mora
35'57.3'
105'18.7'
Santa Fe
Santa Fe
3978800 471900
paper
# 85
Mora Quad
1330 r
1338 r
R=4.72x10-10/yr
~=0.557x10-10/yr
4
COMMENTS:
**
1340 =
Rb-Sr
Sandoval
SandiaMountains
isochron
35'15.92'
106'28.5'
Sandia Granite
whole-rock
bi,
4E12N
13
quartz monzonite
Albuquerque
3903250 365900
Caiion d e l AguaAlbuquerque
area
paper
Brookins and Majumdar, 1982
Brookins, 1982
COMMENTS: Two-pointmineral
whole-rockisochron.
P l a c i t a s Quad
UNM
1340 r
87=1.42x10-ll/yr
# 86
Y
4
--
**
1340 i
isochron
Mountains
Sandia
Sandia Granite
Albuquerque
monzonite
quarrz
Embudito Canyon
Albuquerque
area
paper
Brookins and M a j u d a r , 1982
Brookins, 1982
COMMENTS: Two-Doint mineral
1340 z
**
SandiaMountains
Sandia Granite
granite
3 m i N of Placitas
A l d r i c h e t at.,1957
COMMENTS:
Rb-Sr
hi, whole-rock
Bernalillo
QuadCrest
Sandia
35O7.75'
106'28.8'
UNM
ION
4E
2
1340
3888150 365100
87=1.42x10-11/yr
*
# 87
Y
4
--
whole-rockisochron.
Rb-Sr
mica
Albuquerque
Albuquerque
Sandoval
35'21.7'
106°24.8t
13N 5E
16
3913900 371750
paper
P l a c i t a s Quad
Carnegie I n s t i t u t i o n
1340 T
4
# 88
60
**
1340 I_ 20
Tusas Mountains
Vadito Group
h b l - c h l - b is c h i s t
Ancones area
paper
Gresens, 1975
K-Ar
biotite
Abiquiu
Aztec
Arriba
8E
Rio
36'26.0'
106°03.0'
25N
1
4032300 405900
ALL DATA
# 89
La Madera Quad
U. of Arizona
1340
*
20
Y
Y
4
COMMENTS: Same sample as UAKA-71-23.
**
1342 T 28
Sandia Mountains
Sandia Gbri ao nt iittee
ogrrbainc iut e
lar
Sandia Crest area
Brookins e t al., 1975
En2 e t a l . ,
1979
COMMENTS:
**
rque
area
Crest
1343 r 27
SandiaMountains
Sandia
b i o tGi trea n i t e
ogrrbainc iut e
lar
Sandia
Brookins e t a l . , 1975
En2 e t al., 1979
COMMENTS:
**
1343 i 21
Tusas Mountains
Vadita Group
schist
qtz-mu-bi
Kiowa Mountain
paper area
Gresens, 1975
K-Ar
4E
Albuquerque
Albuquerque
B e r n a l i l l oQuad Crest Sandia
U. o f Arizona
35'12.95'
106'28.12'
1342
28
11N
1
1334 .t 28
3897750 366300
R=4.76x10-10/yr
6=5.89xlO-lI/yr
4
paper
# 90
*
Brookins, 1982
K-Ar
Albuquerque
Bernalillo
35'12.95'
106'28.12'
11N 4E
1
3897750 366300
Sandia CresT Quad
U. o f Arizona
1335
27
1343
27
R=4.76xlO-I0/yr
~=5.89x10-11/yr
# 91
*
4
Brookins, 1982
K-Ar
biotite
Chama
Aztec
8E
Rio A r r i b a
TablasLas
Quad
36'35.0'
106"06.0'
U. of Arizona
27N
9
1343 i 21
4049050 401600
# 92
Y
Y
4
COMMENTS:
**
1346 T
Mountains
Oscura
Mockingbird Gap p l u t o n
granite
S. OscuraMountains
paper
Muehlberaer e t a l . .
1966
Muehlberier and Denison, 1964
Rb-Sr
Lincoln
106°20.43'
33'33.L3'
whole-rock
9s
6E
5
Oscura
Mountain
3713650 375600
Tularosa
Mockingbird Gap SE Quad
U. o f TX, A u s t i n
1300 I
1346
87=1.47x10-11/yr
# 93
.t
4
COMMENTS:
**
1348 t
P i c u r i s Mountains
HardingPegmarite
pegmatite spotted rock
Harding mine area
B a l e s t r i and Brookins, 1985
Rb-Sr
model
whoie-rock
29
11E
Taos
Raton
Taos
36'11.53'
105'47.67'
23N
4005425 428000
Trampas Quad
UNM
1348
87=1.42x10-11/vr
# 94
Dexter
# 95
COMMENTS: Samples were c o l l e c t e d and analyzed i n l a t e 1970s.
**
area
1348 =
Pecos slope
Continental No. muscovite
1 schist
musc s c h i s t
Dexter
Muehlberger e t al., 1966
K-Ar
Roswell
Chaves
East
33'7.5'
104°18.5'
145
26E
2
3666000 564000
paper
Quad
U. o f TX, A u s t i n
1340 r
1348 T
Y Y
R=4.72x10-10/vr
6=0.585x10-10/vr
Continentai No. 1 Langford
COMMENTS:
1350 3 104 **
Rb-Sr
Socorro
# 96
Cerro Montoso Quad
Los
Mountains
isochron
Pinos
106'36.5'
34'20.5'
UNM
Sepultura granite
1.2N
3E
whole-rock
1350
104
Y
granite
Socorro
3801000 352000
87=1.42x10-11/yr
Bootleg Canyon
area
paper
Socorro
4
Brookins e t at., 1980
Brookins, 1982
COMMENTS: Isochron o f 6 samples. Dataare from Bolton, 1976. Shastri (1993)has
shown t h a t t h i s i s same
p l u t o n as Los Pinosgranite, and recomnends abandonment o f t h e name Sepultura.
*
61
**
1350 T
Sandoval
SandiaMountains
isochron 106'28.9' 35'16'
Sandia
whole-rock
bi,
Granite
4E
12N
14
quartz monzonite
Albuquerque
3903450 365250
Caiion d e l Agua area
Albuquerque
paper
Brookins and Majumdar,1982
Brookins and Majumdar, 1982b
Brookins, 1982
COMMENTS: Two-pointmineral
whole-rockisochron.
ALL DATA
P l a c i t a s Quad
UNM
# 97
*
1350
87=1.42x10-ll/yr
Y
d
--
**
1350 t 1
Ar-Ar
Colfax
Cimarron Range
plateau
36'31.73'
105°12.19'
Cimarron Rivertecronicunitmuscovite
metarhyolite
Wheeler Peak
4042400
482000
South of paper
Horseshoemine
Raton
Grambling, J. A. andDallmeyer,
R. D., i n press
Touch-Me-Not Mtn Quad
U. ofGeorgia
1350 T 1
# 98
Y
Y
4
COMMENTS: Ridge 220 m NE of Fowler Pass shear zone. adiacent t o banded ironstone.
1352
x
24
**
Vadito Group
quartz-musc schist
Truchas Peak area
Ward, 1990
Ward, 1986
COMMENTS:
paper
**
1353 i
Picuris Mountains
HardingPegmatite
pegmatite
replacement
micas
Raton mine area
Harding
B a l e s t r i andBrookins,
1985
Trampas
Rb-Sr
model
l e p i d o l i 29
te
Taos
Taos
105'47.67'
36'11.53'
11E 23N
4005425
428000
Y
Y
Quad
#IO0
UNM
1353 I
87=1.42x10-11/yr
d
COMMENTS: Samples were c o l l e c t e d andanalyzed
Carlsbad
# 99
Rb-Sr
Mora
Quad Truchas Peak
min isochron
35'57'53.
105°38'40.
UNM
min. separates 1512E
20N
1352 i 24
3980025
441900
Santa Fe
Santa Fe
paper
d
S. Sangre de C r i s t o Mtns
i n Late 1970s.
**
1356 i 20
Rb-Sr
Delaware basin
Humble No. 1 Huapache g r a n i t b i o t i t e
biotite granite
Carlsbad
Carlsbad-area
DenisonandHetherington,
1969
Eddy
23s 35 22E
Red Bluff Draw Quad
Mobil,Dallas
1356 z 20
1310 t 20
#IO1
87=1.47x10-11/vr
COMMENTS:
~
**
1358 t
Great Province
Plains
C i t i e sS e r v i c e No. 1 g r a n i t e
granite
ofNorth
Santa Rosa
Muehlberger e t al., 1966
Callender e t al., 1976
Bar
Guadalupe
104'41.82'
35'10.03'
11N22 21E
3891400 527600
paper
K-Ar
biotite
Conchas Lake
Santa Fe
~
~~
~~
Y Ranch Quad
U. of TX, A u s t i n
1350 r
1358 i
Y gn
R=4.72x10-10/yr ~=0.585xIO-lO/yr
SCeirtvi ei cse
No. 1 Origgers
#I02
COMMENTS:
*
**
1358
Mountains
Oscura
Sun No. 1 Bingham S tgabrt aei ont i t e
granitic gneiss
North
of
Oscura
Mountains
Tularosa
Muehlberger e t al., 1966
COMMENTS:
Oscura
Mountain
Socorro
106'23.95'
33'51.27'
5s 23 5E
3746700 370625
paper
SW Quad
Peak Wrye
U. of TX, A u s t i n
1350 T
1358
Y Y
R=4.72~10-10/vr
~=0.585x10-10/vr
Sun No. 1~Bingham State
#I03
*
From subsurface "central granite belt."
**
1358 T
SandiaMountains
Sandia Granite
granite
area Placitas
A l d r i c he t al., 1957
COMMENTS:
K-Ar
K-Ar
mica
5E
Albusuersue
paper
Albuquerque
Sandoval
35'21.7'
106°24.8'
13N 1350
16
3913900 371750
P l a c i t a s Quad
#I04
*
I
1358
R=4.72x10-10/vr ~=0.557x10-10/vr
d
Belen
n
62
ALL DATA
**
AT-Ar
Valencia
PeakManzano
Quad
1361 E 3
#I05
Manzano Mountains
plateau
34'32.23'
106'29.15'
U. ofGeorgia
M eSteavr ihl lyeotlai t e
Fm
muscovite
1361 I 3
Y Y
schist pelitic
Pipe Canyon
unpublished Socorro
4
Thompson e t al., 1991
Grambling, personalcomnunication,
1992
COMMENTS: Discordant spectra are interpreted to result from thermal overprint at
1000-1100 Ma of system t h a t
cooledthrough A r r e t e n t i o n temps a t -1340-1360 Ma. From 150 m E of sample G92:6, along N side of
Pipe Canyon.From
unretrosraded aDrt o f S tectonometamorDhic seauence. Total-Gas-Ase = 1 3 5 7 ~ 3Ma.
**
1362 T
P i c u r i s Mountains
HardingPegmatite
pegmatite
replacement
micas
Harding mine
area
paper
B a l e s t r i and Brookins, 1985
Rb-Sr
Trampas
model
mica
Taos
Raton
Taos
36'11.53'
105'47.67'
2911E
23N
4005425 428000
Quad
#I06
UNM
1362 T
87=1.42x10-11/yr
4
COMMENTS: Samples were c o l l e c t e d and analyzed i n l a t e 1970s.
**
1364 = 27
Rb-Sr
Quad
Mountain
Pedernal
Torrance
Pedernal H i l l s i s o c h r o n
UNM
Pedernal metasediments whole-rock
1364 1: 27
q u a r t z i t e and s c h i s t
Vaughn
87=1.42x10-11/yr
Pedernal
Fort
Mtn area
Sumner
paper
4
Mukhopadhyay e t al., 1975
Brookins, 1982
COMMENTS: Isochron o f 4 q u a r t z i t e and 6 s c h i s t samples. Location unknown.
1365
** lruchas
S. Sangrede C r i s t o Mtns
whole-rock
Embudo granite
granite
Cordova area
Brookinsetal.,
1985
Register and Brookins, 1979
COMMENTS:
Arriba
Rb-Sr
model
Rio
36'00.27'
10E 21N
3984600
TaOS
105"51.15'
35
423175
#I07
Y
Y
Quad
UNM and UNC
1365 i
87=1.42x10-11/yr
# I 08
-/
~
**
Rb-Sr
1366 T
P i c u r i s Mountains
model
Pegmatite
Harding
cleavelandite
pegmatite
cleavelandite-qtz
4005425
Taos
Hardingmine
area
paper
Raton
B a l e s t r i and Brookins, 1985
Taos
105'67.67'
36'11.53'
11E 23N
29
628000
Trampas Quad
UNM
1366 =
87=1.42x10-11/yr
#I09
4
COMMENTS: Samples were c o l l e c t e d and analyzed i n l a t e 1970s.
~
**
Ar-Ar
1366 I2
Manzano Mountains
plateau
S e v i l l eM
t ae t a r h y o l i t e
Fm
muscovite
pelitic schist
Belen
Estadio Canyon
Socorro
Grambling, personalcomnunication,
1992
COMMENTS: From 900 m W of P r i e s t q u a r t z
Total-Gas-Age = 1357*3 Ma.
Valencia
34'30.85'
106'29.85'
unpublished
monzonite,fromunretrograded
ManzanoPeak Quad
U. o f Georgia
1366 T 2
~~
#I10
Y
Y
4
p a r t of S tectonometamorphic sequence.
~
1368 =
**
Oscura Mountains
Oscura
muscovite
9s
Pluton
granite
Mockingbird Gap area
Muehlberger e t al., 1966
K-Ar
Mockingbird
Lincoln
33'33.43'
106°20.43'
6E
5 SE
Oscura
Mountain
3713650 375600
Tularosa
paper
COMMENTS: Coarse-grained,two-mica
**
Gap SE Quad
U. o f TX, A u s t i n
1360 *
1368 =
R=4.72x10-10/yr
~=0.585x10-10/yr
~~~
#I11
4
granite.
1368 T
K-Ar
Oscura Mountains
Sun No. 1 Bingham State gran
biotite
Oscura
Mountain
granite gneiss
North
of
Oscura
Mountains
Tularosa
Muehlberger and Denison, 1964
COMMENTS: From subsurface "central granite belt."
Socorro
33'51.27'
106'23.95'
5E
23
5s
3746700 370600
paper
WryePeak
SW Quad
USGS
1360
1368
# I 12
*
Sun # I Bingham State
Y
gn
63
**
1368 i
San
Mountain
Diego
Tonuco Mtn gneiss
d i o r i t i c gneiss
Tonuco Mountain
Cruces
Las
area
Muehlberger e t al.,
K-Ar
ALL DATA
Doiia Ana
32'36'
106"58'
20s
1w
5
3608000 315500
paper
biotite
White Sands
1966
Selden Canyon Quad
U. of TX, A u s t i n
# I 13
*
1360 1:
1368
Y
B=4.72x10-10/vr
€=0.585x10-10/vr
.
I/
Y
..
COMMENTS: Approximate location.
1372
I
**
Rb-sr
S. Sangre de C r i s t o Mtns
whole-rock
Embudo granite
granite
Nambearea
Falls
Brookinsetal.,
1985
Register andBrookins,
COMMENTS:
Santa Fe
35'50.73'
105'54.37'
10E
19N
29
3967000 418200
paper
model
Santa Fe
Santa Fe
Tesuque Quad
UNM and UNC
1372
87=1.42x10-11/vr
# I 14
*
1979
1375 5
**
Kilbourne Hole
Kilbourne Hole xenolith
gt granulite xenolith
K i lbourne Hole area
Davis and Grew, 1978
Pb-Pb
Doiia Ana
Hole Kilbourne
Quad
model 207/206
31°58'17"
106°57'45z1
Carnegie
Institution
8
1375 T
zircon
27s
1W
E l Paso
3538750 314600
E l Paso
unpublished
I/
COMMENTS: I n t e r p r e t e d as minimum value for time
discordant.
**
1380 t 29 Socorro
Rb-Sr
isochron
Los Pinos Mountains
whole-rock
Los
granite
Pinos
granite
thesis
Socorro
Mtn area
Whiteface
Bolton, 1976
of metamorphism. Zirconsare
106'34'
34'22'
3803000 355000
Socorro
#115
gr
rounded, unzoned, and h i g h l y
Becker and CerroMontosoQuad
UNM
1410 i 30
1380 r 29
87=1.39x10-11/yr
#I16
Quad
Cal Tech
1410 i
1380
87=1.39x10-ll/yr
I/
#I17
I/
COMMENTS: Isochron of 6 samDles.
**
paper
1380 t
Mountains
isochron
sandia
Sandia
whole-rock
Granite
granite
Albuquerque
Carnue area
Brookins, 1974c
Wasserburg e t al.,
Rb-Sr
Albuquerque
TBi e
j er rnaasl i l l o
106'28.0'
35'3.83'
25 ION
4E
3880900 366250
1965
COMMENTS: O r i g i n a l dating by
Wasserburg e t al..
**
Wasserburg and Steiger, 1967
1965.
Rb-Sr
Flat
1380
30
Cibola
ZuniMountains
isochron
108'09'
35'10'
Post O f f i c e Flat
metarhyolit
whole-rock
11N
12,l
metarhvolite
Zuni
Post O i f i c e F l a t a r e a
Gallup
paper
Brookins e t al., 1978
Brookins, 1982
al.,
et
Brookins
COMMENTS: Isochron of 5 samples.Approximate
location.
1380
*
45
**
K-Ar
B i g Burro Mountains
Burro Mtn g r a n o d i o r i t e
granodiorite
Bear Canyon area
City
Marvinetal.,
1988
Hedlund, 1980
COMMENTS:
**
biotite
sCi li vt ye r
Silver
1382
Trampas
Rb-Sr
P i c u r i s Mountains
model
Harding Pegmatite
mica
pegmatitereplacementmica
Taos
Hardingminearea
Raton
B a l e s t r i andBrookins,
1985
r
Office
Post
Quad
# I 18
UNM
~~
19.2
Grant
32'44.9'
108'33.1'
17w
12
18s
3625900 729400
paper
Taos
36'11.53'
105'47.67/
23N 1382
11E
29
4005425
428000
paper
COMMENTS: Samples were c o l l e c t e d and analyzed i n Late 1970s.
1380
2
30
Y
Y
I/
1977
B u l l a r d Peak Quad
#I19
USGS
1380 i 45
D=4.962xIO-l0/yr
I/
Quad
UNM
*
87=1.42x10-11/yr
I/
#I20
64
ALL DATA
~
**
1384 + 86
S. Sangre de c r i s t o Mtns
Pecos Complex
bi-plag schist
Rio Mora area
Ward, 1990
Ward, 1986
COMMENTS: Samples a r e from2-3
Rb-Sr
isochron
whole-rock
Santa Fe
Santa Fe
Mora
35'53'15.
105'32'38.
13E19N
8
3971500 447850
paper
m of d u c t i l e t h r u s t f a u l t t h a t
UNM
1384
*
Y
area
1387 =
**
Pecos slope
De KaLb No.
Lewis
1
granite
B i t t e r Lake area
Muehlberger e t al.,
Rb-Sr
Y
d
marks Pecos Complex-Hondo Group contact.
1384 = 29
**
K - A#I22
r
Quad
Sandia
B e r n a l i l l o Crest
Sandia Mountains
U. o f Arizona
35'12.94'
106'29.29'
Juan Tabo
muscovite
Series
4E
11N
2
1376
29
1384
29
metasedimentary
Albuquerque
rock
3897075
364125
B=4.76x10-10lyr
c=5.89x10-11lyr
Rincan
d
papar
Brookins and Shafiqullah, 1974
Brookins, 1982
COMMENTS: Metasedimentaryrockfromcontactaureoleof
Sandia Granite.
Chaves
*
Y
Y
Comanche Spring Quad
#I23
U. o f TX, A u s t i n
g r aK
n i-tfee l d s p a r
Roswell
Roswel L
1966
10s
25E
13
1340
1387
I
i
87=1.47x10-11/~r
De Kalb No. 1 Lewis
paper
COMMENTS:
**
K-Ar
San
1388 t
San Andres Mountains
San Andres p l u t o n
biotite
White
gneiss
granitic
Sands
San Andres Peak area
paperLas Cruces
Muehlberger e t a l . ,
1966
Doiia Ana
32'41'
106'31.5'
19s
4E
3
3617000 357000
Andres Peak Quad
Austin
1380 T
Y Y
1388 =
D=4.72x10-10/yr
~=0.585x10-1Dlyr
#124
U. o f TX,
d
COMMENTS:
**
K-Ar
1392 9 29
SandiaMountains
muscovite
Rincon pegmatite
pegmatite
Albuquerque
Rinconarea
Albuquerque
Brookins and Shafiqullah, 1974
Bernalillo
35'12.52'
106'29.52'
11N 4E
2
3897800 364550
paper
Sandia Crest Quad
#125
U. ofArizona
*
1384
29
1392 z 29
Y Y
B=4.76x10-10/yr
~"5.89x10-11/yr
I/
COMMENTS: PegmatitefrommetamorphicrocksnearSandiaGranite.
1394
a
**
Ar-Ar
Cimarron Range
isotope
correl.
hornblende
unit
tectonic
NestEagle
amphibolite
Wheeler Peak
blw
Tolby
and Clear
creeks
Raton
Grambling and Dallmeyer, i n press, JMG
ea
#I21
86
*
ue
~~~~
Pecos F a l l s Quad
Colfax
36O30.63'
105°11.9'
Touch-Me-Not Mtn. Quad
#126
U. of
Georgia
1394
*
8
Y
Y
d
paper
COMMENTS: Retrogradehornblende.Within
a t h i n Lens of gneissicamphibolite,alongcontact
between gneissic
q u a r t z i t e and quartzofeldspathic gneiss, 480 m SW of trace of Fowler
Pass shear zone. Total-Gas-Age
= 1413+8 Ma.
**
mine
1396 T 172
P i c u r i s Mountains
HardingPegmatite
pegmatite
cleavelandite-qtz
Harding
Brookins e t at., 1979
COMMENTS:
Rb-Sr
Trampas
Taos
36'12.07'
105'47.65'
isochron
cleavelandite29 11E23N
Taos
4005450 428600
#127
d
Isochron of 6 samDles.
**
Rb-Sr
1397 I:
Delaware basin
Socony Mobil No. 95 granitewhole-rack
porphyry
granite
Hobbs
Buckeye area
Hobbs
Muehlberger e t at., 1966
COMMENTS:
Quad
UNM
1396 i 172
87=1.42x10-11lyr
Buckeye Quad
Lea
U. o f TX, A u s t i n
17s
paper
34E
26
*
1397 I
1350
87=1.47x10-11/yr
Soocony
95 Mobil No.
Bridges
State
#I28
65
**
Rb-Sr
1397 i
S i e r r a Grande arch
Shamrock No. 1McArthurgranK-feldspar
granite
ROY
Mogote H i l l s area
S a k a Fe
Muehlberger e t al., 1966
Callenderetal.,
1976
COMMENTS:
**
Rb-Sr
1397 = 30
Delaware basin
Humble No. 1 Huapache g r a n i tf e l d s p a r
w a n i t eb i o t i t e
Carlsbad
Carlsbad
Carlsbad-area
Denison and Hetherington, 1969
ALL DATA
~
Mora
104°40.1'
35'53.6'
21E 19N
12
3972000 529950
paper
Red
Eddy
23s 3522E
~~~~
Mogote H i l l s Quad
U. o f TX, A u s t i n
1350 r
1397 *
87=1.47xl0-ll/vr
Shamrock~No: 1McArthur
#I29
Bluff Draw Quad
Mobil,Dallas
1350 i 30
1397 T 30
87=1.L7x10-11/vr
HumbleNo.
1 Huapache
#I30
-.
COMMENTS:
1400 T 59
**
LosPinosMountains
Sepultura granite
granite
thesis
Bootleg
Socorro
Canyon area
Bolton, 1976
Rb-sr
isochron
whole-rock
Socorro
Cerro Socorro
34'20.5'
106'36.5'
3E 1,2N
3801000 352000
Montoso Quad
1430 T 60
1400
87=1.39x10-11/yr
s h a s t r i (1993)has shown t h a t t h i s p l u t o n i s t h e
granite, and recomnends abandonment of the term Sepultura.
rea
Lucio
Taos
and Shiver(1973).Isochronof
Colfax
36O31.2'
105°11.43'
Y
same as the LosPinos
#I32
i
3 samples.
Touch-Me-Not Mtn Quad
#I33
U. of
Georgia
1401
paper
59
PeRasco, E l V a l l e Quad
1400
**
Ar-Ar
1401 i 2
Cimarron Range
plateau
Eagle Nest tectonic
hornblende
unit
amphibolite
Wheeler Peak
West of Clear Creek
Raton
Grambling and Dallmeyer, i n press
i
4
COMMENTS: Isochron of 6 samples.
**
Rb-Sr
1400 i
isochron
Picuris Mountains
PeRasco Quartz
Monzonite
whole-rock
Taos
quartz monzonite
Rio
Long, 1974
Long, 1976
COMMENTS: Data reinterpreted from Fullager
#I31
UNM
*
2
Y Y
4
COMMENTS: Retrogradehornblende.
From a continuous layer of amphibolite
i n quartzofeldspathic gneiss,
ofridgecrest.Isotopecorrelation
age = 1398r4 Ma. Total-Gas-Age = 1388+3 Ma.
**
Ar-Ar
1402 .e 1
plateau
Sandia Mountains
muscovite
sandia Granite
granite
Albuquerque
Juan Taboarea
picnic
Albuquerque
unpublished
Grambling, personalcomnunication,
1992
Sandoval
35'12.69'
106'29.47'
sandiaCrestQuad
Rb-Sr
model
29
Taos
Raton
11E
#I34
U. ofGeorgia
1402
* 1
4
COMMENTS: NW edge of Sandia Granite, Juan Tabo p i c n i c area.Total-Gas-Age
**
1406 i
Picuris Mountains
Pegmatite
Harding
cleavelandite
pegmatite
cleavelandite-qtz
Harding mine area
B a l e s t r i and Brookins, 1985
180 m W
Taos
36'11.53'
105'47.67'
23N
4005425 428000
paper
= 1 2 8 5 ~ 2Ma.
Trampas Quad
UNM
1406
87=1.42x10-11/yr
#I35
4
COMMENTS: Samples were c o l l e c t e d and analyzed i n l a t e 1970s.
a
mine
**
Rb-Sr
Taos
1406 =
P i c u r i s Mountains
model
105'47.67'
36'11.53'
Pegmatite
Harding
cleavelandite
11E 23N
29
pegmatite
cleavelandite-qtz
4005425
Taos
428000
Harding
B a l e s t r i and Brookins, 1985
COMMENTS: Samples were c o l l e c t e d and analyzed i n l a t e 1970s.
Trampas Quad
UNM
1406 T
87=1.42xlO-Il/yr
4
#I36
66
*
**
1407
19
SandiaMountains
Juan Tabo pegmatites
pegmatite and a p l i t e
paper
Albuquerque
Juan Tab0 area
Brookins and Majumdar, 1989
Rb-Sr
isochron
whole-rock
27,3
4E
Albuquerque
Sandoval
35-14'
10690'
12N
3899500 363500
ALL DATA
1407
**
*
Rb-Sr
model
TaOS
36'75.85' 105O47.13'
24N
11E 32
4013350 429475
Taos
Raton
x
19
4
COMMENTS: 3 pegmatites and one a p l i t e f r o m deformed dikes cuttings across
1407
P i c u r i s Mountains
Glenwoody Fm pegmatite
whole-rock
pegmatite
P i l a r area
Brookins e t al., 1985
#I37
Sandia Crest Quad
UNM
Juan Tabo Series.
Carson Quad
UNM and UNC
1407 *
87=1.42x10-11/~r
#I38
seldon
Quad Canyon
U. o f TX, A u s t i n
1360
1407
87=1.47x10-11/yr
#I39
COMMENTS: Pegmatite a t Ortega Fm-Glenwoody Fm contact.
**
1407 2
San
Mountain
Diego
San Diego Mtn gneiss
g nd ei oi sr ist i c
Cruces
Tonuco Mtnpaper
area
Muehlberger e t at., 1966
Rb-Sr
Doiia Ana
106'58'32'36'
whole-rock
20s
1w
5
White Sands
3608000 315500
Las
i
Y
Y
4
COMMENTS: Approximate location.
**
1408 r
San AndresMountains
Canyon
Rhodes
g r a n o dbi oi or ti ti tee
granodioritic
Tularosa
gneiss
RhodesCanyon area
paper
Muehlberger e t a l . , 1966
Sierra
Canyon
33O12.5'
106*35.5'
135 4E
3
3675000 351000
K-Ar
Tularosa
COMMENTS: T h i s u n i t i s s u b d i v i d e d f r o m C a p i t o l
1410
f
50
**
K-Ar
T i p Top
Quad
Austin
Y Y
1408 =
1400
B=4.72x10-10/yr
e=0.585x10-10/yr
#I40
U. o f TX,
*
4
Peak Dluton of Condie and Budding(1979)
Redrock
Grant
NE Quad
32'42.0'
108°30.8'
USGS
Y
Peak Series
biotite
18s
16W
32
1L10 T 50
3620600 733100
S i l v e r City
gneiss
Peak area
map
4
S i l v e r City
1980 (reported as from R. F. Marvin, H. H. Mehnert, and V. M. M e r r i t t , written comnun.)
#I41
B i g BurroMountains
Bullard
sill-gt
Bullard
Hedlund,
Y
COMMENTS:
1410
2
50
**
K-Ar
B i g Burro Mountains
B
b ui ol ltai tred Peak S e r i e s
gneiss
B u l l a r d Peak area
M a r v i n e t at., 1988
S i l v e r City
S i l v e r City
Grant
108'31'
32'42'
18s
16W 32
3620600 732800
paper
B u l l a r d Peak Quad
USGS
1410
50
D=4.962x10-10/yr
#I42
Y
Y
4
COMMENTS:
**
1412
S. Sangrede C r i s t o Mtns
Embudo g r a n i t e
granite
Nambe Falls area
Brookins e t al., 1985
Register and Brookins, 1979
COMMENTS:
*
**
1413 r
Picuris Mountains
Rinconadawhole-rock
Formation
pelitic schist
Copper Hill area
Brookins e t at., 1985
COMMENTS:
From R2 s c h i s t .
Rh-Sr
model
whole-rock
Santa Fe
Santa Fe
Rb-Sr
model
Taos
Raton
Sanra Fe
35'50.73'
105O54.37'
10E19N
29
3967000 418200
paper
Taos
36O12.93'
105°48.07'
2011E
23N
4007950 428000
paper
Tesuque Quad
UNM and UNC
1412 T
87=1.42x10-11/yr
#I43
Trampas Quad
#I44
4
UNM and UNC
1413 =
87=1.42x10-ll/yr
4
Y
Y
61
*
**
Rb-Sr
model
1416
P i c u r i s Mountains
whole-rock
Pegmatite
Harding
pegmatite
Hardingminearea
Brookinsetat.,
1985
Taos
Raton
Taos
36Y1.53' 105947.67'
29 11E
23N
4005425 428600
paper
ALL DATA
Trampas Quad
#I45
UNM and UNC
1416 i
87=1.42x10-11/yr
I/
COMMENTS: Fine-grained phase o f pegmatite.
*
1416
100 **
Pedernal
Torrance
Rb-Sr
Pedernal H i l l s
whole-rock
Pedernal Mtn g r a n i t e
granite
Vaughn
Pedernal
Fort
Mtn area
Sumner
Armstrong and Holcombe, 1982
COMMENTS: Approximate l o c a l i t y .
**
1420 r 117 Socorro
Magdalena Mountains
Magdalena Granite
granite
thesis
Jordan Canyon area
White,1977
COMMENTS:
34'46.55'
105'40.6'
6N
12E
4
3848200 438100
paper
May befromPedernalpLuton(Condie
Rb-Sr
isochron
whole-rock
Magdalena
Socorro
Mtn Quad
Columb
100
#146
U. o fB r i t i s h
1416
i
Y
Y
-/
and Budding, 1979). S o f Pedernal Mtn.
Magdalena Quad
107°10i
34'5'
2,3S
#I47
Miami Univ.
3W
1450 3 120
1420
87=1.39xlO-ll/yr
I_
117
No
-/
Isochron o f 10 samples.
**
1422 i
Picuris Mountains
HardingPegmatite
pegmatire
replacement
micas
Raton
areamine
Harding
B a l e s t r i and Brookins, 1985
Rb-Sr
model
lepidolite
Taos
Taos
36'11.53'
105'47.67'
11E 23N
29
4005425 428000
paper
Trampas Quad
#148
UNM
1422 x
87=1.42x10-11/yr
-/
COMMENTS: Samples were c o l l e c t e d and analyzed i n l a t e 1970s.
*
**
1422
P i c u r i s Mountains
Glenwoody Fm pegmatite
whole-rock
Degmatite
b i i a r area
Brookins e t al., 1985
Rb-Sr
model
Taos
Raton
Taos
36'16.02'
105'47.42'
24N
11E 32
4013650 429025
Carson Quad
#I49
UNM and UNC
1422
87=1.42x10-11/vr
COMMENTS: Pegmatite cutting metarhyolite.
**
Ar-Ar
1423 i 2
plateau
Sandia Mountains
muscovire
Cibola quartzite
muscovite quartzite
Albuquerque
unpublished
Albuquerque
Seven Springs
Grambling, personalcomunication,
1992
Bernalillo
35'4.95'
106'24.23'
Trampas
Rb-Sr
model
whole-rock
Taos
Raton
*
#I50
Y
Y
-/
COMMENTS: From N-rrending canyon 0.4 km NW o f Seven S p r i n g s p u l l o f f
**
1424 i
P i c u r i s Mountains
RinconadaFormation
pelitic schist
P i l a r c l ipaper
f f s area
Brookinsetal.,
1985
T i j e r a s Quad
U. o f Georgia
2
1423
Taos
36'14.79'
105'47.9'
23N
11E 8
4011400 428275
from US-66. Total-Gas-Age = 141012 Ma.
Quad
UNM and UNC
1424 t
87=1.42x10-11/yr
#I51
Y
Y
-/
COMMENTS: From R2 s c h i s t .
**
1424 T 30
K-Ar
Bernalillo
35'12.52'
106'29.52'
Sandia Mountains
muscovite
Rincon pegmatite
4E11N
1417
2
Albuquerque
pegmatite
3897800 364550
Rincon area
Albuquerque
paper
Brookins and Shafiqullah, 1975
Brookins, 1982
COMMENTS: Pegmatite from metamorDhic rocksnearSandiaGranite.
Sandia Crest Quad
U. ofArizona
+ 30
1424 i 30
Y Y
13=4.76x10-10/yr ~=5.89x10-11/yr
-/
#I52
a
68
1425 T 15
**
Tusas Mountains
Vadito Group
f e l d s c h i s t & pegmatite
Mesa J a r i t a area
paper
Long, 1972
Rb-Sr
isochron
mu, whole-rock
Abiquiu
Aztec
ALL DATA
Rio Arriba
#I53
La Madera Quad
U. of TX, A u s t i n
1425
i
15
Y
Y
4
COMMENTS: Isochronof
8 samplesfrom4
widely spaced l o c a l i t i e s . Combined whole-rock and mineralisochrons.
Dating a metamorDhic event,according t o author.
**
1427 =
Trampas
Rb-Sr
P i c u r i s Mountains
model
Puntiagudo
Granite
Porphyry
whole-rock
granite
Taos
Cerro Puntiagudo
paper area
Raton
Brookins e t al., 1985
Taos
36O12.0'
105°51.02'
10E 23N
26
4006425
423550
Quad
UNM and UNC
1427
87=1.42x10-11/yr
*
#I54
Y
Y
I/
COMMENTS:
*
1427
Manzano
concordia
Mountains
P r i e s t Quartz Monzonite
quartz monzonite
Estadio
abstract
Socorro
Canyon area
Bauer e t at., 1992
U-Pb
Valencia
34'31.2'
106'28.4'
zircon
Belen
Quad
#I55
mi
3820300 364250
near-concordantinherited
component a t >I600 Ma.
~
**
1430
P i c u r i s Mountains
Glenwoody Fm pegmatite
whole-rock
pegmatite
P i l a r area
Brookins e t al., 1985
*
COMMENTS: Pegmatite from Ortega
~~~
Manzano
M.I.T.
1427 .e
I/
COMMENTS: 3 points. A f o u r t h p o i n t i s
~~~~~
Peak
Rb-Sr
model
Taos
36O15.85'
105°47.13'
11E 24N
32
4013350
paper
Taos
429475
Raton
#I56
CarsonQuad
UNM and UNC
1430 I
87=1.42x10-11/yr
I/
Fm-Glenwoody Fm contact.
~
**
1430 3
Rb-Sr Salinas Sierra
106'36'
33'18'
San AndresMountains
whole-rock
gneiss
Mine
White
12s
4E
Tularosa
granodiorite gneiss
Mine
White
Muehlberger and Denison, 1964
COMMENTS: This sample may bemislocated,
m
i SE onCondie
and Budding(1979)
1430 .L 20
**
Sandia Mountains
Sandia Granite
quartz monzonite
S. SandiaMtnsarea
paper
Steiger and Wasserburg, 1966
COMMENTS:
Peak Quad
3
USGS
1430
=
#I57
Y
Y
I/
no Precambrian i s shown i n r h i s section, however, gneiss i s shown 2
map.
Pb-Pb
model 2071206
zircon
Albuquerque
Albuquerque
Bernalillo
35'03'50"
106'28'00"
25
ION
4E
3880900 366250
#I58
T i j e r a s Quad
Carnegie I n s t i t u t i o n
1430
20
*
I/
-120 +I50 mesh
1430 T
Cimarron Range
Eagle Nest tectonic unit
gt-plag gneiss
abstracrTolby
Raton
Creek area
Grambling e t al., 1992
U-Pb
concordia
monazite
Wheeler Peak
Touch-Me-Not MtnQuad
#I59
M.I.T.
1430
r
Y
Y
4042000 480000
I/
COMMENTS: Nearly concordant. Authors interpret
1430 r
Cimarron Range
Eagle Nest tectonic unit
gt-plag gneiss
absrract Tolby
RatonCreek area
Grambling e t a l . ,
1992
Colfax
U-Pb
concordia
zircon
Wheeler Peak
COMMENTS: Nearly concordant. Authors interpret
age as time of cooling during extension.
Colfax
#I60
Quad
Touch-Me-Not Mtn
M.I.T.
1430
i
4042000 480000
I/
age as time of cooling during extension.
Y
Y
69
**
1435 i
Picuris Mountains
RinconadaFormation
schistpelitic
cpaper
liffs
P Raton
ilar
area
Brookins e t al., 1985
Trampas
Rb-Sr
model
whole-rock
Taos
ALL DATA
Taos
36'14.79'
105'47.9'
11E 23N
8
4011400 428275
Quad
UNM and UNC
1435 t
87=1.42x10-11/yr
#I61
Y
Y
-/
COMMENTS: From R2 s c h i s t .
**
1437
Big Burro Mountains
Burro Mtn zgi r ca on ni t e
granite
Round Mtn area
Stacey and Hedlund, 1983
*
Gold
Hidalgo
Pb-Pb
model 2071206
32'27.8'
108'34.2'
21s
17w
22
Lordsburs
3594170 728360
silver city
paper
COMMENTS: Near Co-op mine i n Gold Hill m i n i n g d i s t r i c t .
**
Pb-Pb
Gold
1437 d
Big Burro Mountains
model 207/206
rcon zi
Burro Mtn g r a n i t e
S i l v e r City
granite
Round
S i l vMtn
er area
City
Stacey and Hedlund, 1983
**
1438 r
P i c u r i s Mountains
whole-rock
Glenwoody Formation
metarhyolite
P i l a r c l i f f s area
Brookins e t al., 1985
Trampas
Rb-Sr
model
Taos
Raton
#162
gn
i
4
Mesh -250.
Hidalgo
32'27.8'
108'34.2'
12s
17w
22
3594170 728360
paper
COMMENTS: Near Co-op mine i n Gold Hill m i n i n g d i s t r i c t .
Hill Quad
USGS
1437
Hill Quad
USGS
1437
#163
gn
i
4
Mesh -50 +loo.
Taos
36'14.93'
105'48.97'
23N
11E
6
4011650 426700
paper
Quad
UNM and UNC
1438 i
87=1.42x10-11/yr
#164
Y
Y
4
COMMENTS:
**
1438 T 5
Ar-Ar
Valencia
Peak
Manzano
Quad
#I65
isotopecorrel.
34O32.32'
106'29.47'
U. o f Georgia
Manzano Mountains
Y Y
1438 = 5
S e v i l l eM
t ae t a r h y o l i t e
Fm
hornblende
amphibolite
Belen
unpublished
PipeSocorro
Canyon area
-/
Thompson e t al., 1991
Grambling, personalcomnunication,
1992
COMMENTS: I s o t o p e c o r r e l a t i o n age i s 36/40 vs 39/40. Total-Gas-Age = 1449t3 Ma. From westernmost mafic layer
exposed on N s i d e o f P i p e Canyon; unretrograded part of
S tectonometamorphic sequence. Isotope
c o r r e l a t i o n age i s i n t e r p r e t e d t o betime sample cooledthroughabout
500'C.
**
1439 T
Florida Mountains
South Peak a l k agl ir a n i t e
g r a n i t ea l k a l i
Cruces
South Peakpaper
area
Brookins, 197l.b
Brookins and C o r b i t t , 1974
Rb-Sr
model
whole-rock
Deming
Las
Luna
32'1.49'
107'34.3r
26s W
7
20
3545900 257100
G y m Peak Quad
UNM
1470 t
1439
87=1.39x10-11/yr
#I66
3
4
COMMENTS:
**
Rb-Sr
Valencia,
Torrance
Scholle,
1439 t 30
Manzano Mountains
isochron 106'30' 34'30'
Priest Quartz Monzonite
whole-rock
4.5E3.4N
quartz monzonite
Belen and Socor
Estadio Canyon area thesis
Socorro
Bolton, 1976
COMMENTS: Isochronof 6 samples.
**
Rb-Sr
T i j eBr aesr n a l i l l o
1439 t
isochron
35'3.83'
106'25.0'
Sandia Mountains
muscovite
Sandia
apliteGranite
I O 25
N
4E
3880900 366250
Albuquerque
aplite
Carnue area
Albuquerque
paper
Brookins, 1974c
s t e i g e r and Wasserburg, 1969
COMMENTS: DatafromSteiger
and Wasserburg, 1969
Manzano
Peak
UNM
1470 t 30
1439
87=1.39x10-11/yr
Quad
i
#I67
30
4
Quad
Cal Tech
1470 I
1439
87=1.39~10-11/yr
4
#168
i
70
**
1440 I: 30
Jemez Mountains
EE-1,
GT-2,
EE-2 whole-rock
dikes
monzogranite dikes
Fenton Hill area
Brookins and Laughlin, 1983
ALL DATA
Sandoval
35'53.03'
106'40.83'
2E 19N
13
3972200 348300
paper
Rb-Sr
isochron
LOS Alamos
Albuquerque
Seven Springs Quad
UNM
1440 i 30
87=1.42x10-11/yr
#169
Y Y
COMMENTS: These datasupercedeBrookins
and Laughlin, 1976. Isochron of 4 samples from GT-2, 1 sample from
EE-1,and 4 samples from EE-2. Approximate l o c a l i t y .
Rb-Sr
Bernalillo
Sandia Crest Quad
1440 i 40
**
SandiaMountains
isochron
UNM
Y
Sandia Granite
whole-rock
bi,
4E
11N
1440 i 40
87=1.42x10-11/yr
quartz monzonite
Albuquerque
4
SandiaCrestarea
oaoer
Albuaueraue
Brookins and Majumdar, 1982
Brookins, 1982
COMMENTS: Mineral--whole-rock isochron o f 8 previous samples p l u s 3 whole-rock samples fromTaggart
Brookins, 1975.
I
paper
Raton
oncordia
Mountains
blished
a
..
.
1440
130
**
Rb-Sr
P i c u r i s Mountains isochron
Rana Monzonite
Quartz
whole-rock
Taos
quartz monzonite
S.
mine
o f Harding
Brookinsetal.,
1985
Register and Brookins, 1979
COMMENTS: Isochron of 5 samples.
**
U-Pb
1440 i 10
Zuni
zircon
Zuni unknown unit
granite
unknown area
S i l v e r , L.T.,
1984, o r a l p r e s e n r a t i o n a t
#170
Taos, RioArriba
36'10.8'
105'48.5'
11E 22,2
4004000 427000
Trampas Quad
UNM and UNC
1440 i 130
87=1.42x10-11/yr
and
#I71
Y Y
d
Register, 1979
Quad
Cal Tech
1440 I 10
Cibola
GSA Rocky Mountainsectionmeeting,
# I 72
Durango, CO.
COMMENTS: Location unknown. I n c l u d e s f o l i a t e d and u n f o l i a t e d g r a n i t e s .
**
1441 i
P i c u r i s Mountains
Pegmatite
Harding
pegmatite
replacement
micas
Harding mine area
B a l e s t r i and Brookins, 1985
COMMENTS: Sampleswere
Trampas
Rb-Sr
model
l e p i d o l i t e 11E
Taos
Raton
Taos
36'11.53'
105OL7.67'
23N
29
4005425
428000
paper
Quad
UNM
1441 r
87=1.42x10-11/yr
#173
4
c o l l e c t e d and analyzed i n l a t e 1970s.
**
1441 T
Mountains
Picuris
HardingPegmatite
pegmatite
mine
Harding
Brookinsetal.,
1985
Rb-Sr
model
K-feldspar
Taos
Taos
36O11.53' 105"47.67'
29 11E
23N
4005425 428600
Trampas Quad
UNM and UNC
1441 +
87=1.42x10-11lyr
# I 74
Hill Quad
#I75
4
COMMENTS:
Lordsburg
**
1444 t
Big Burro Mountains
Burro Mtnz g
i rrcaonni t e
granite
Round Mtn area
Stacey and Hedlund, 1983
Pb-Pb Gold
model 2071206
S i l v e r City
Hidalgo
32'27.8'
108'34.2'
21s
1m
22
3594170 728360
paper
COMMENTS: Near Co-op mine i n Gold Hill m i n i n g d i s t r i c t .
USGS
1444
4
Mesh -100 +150.
*
gn
71
ALL DATA
Hidalgo
1445 T 15
U-Pb
Gold Hill Quad
#176
concordia
32'27.8'
108'34.2'
USGS
Big Burro Mountains
Burro Mtn g
z irracnoi nt e
21s
17.4 22
1445 T 15
gn
Lordsburg
3594170 728360
granite
area
Round Mtn
S i l v e r City
paper
4
Stacey and Hedlund, 1983
Hedlund, 1980 (map; age reportedas 1445 T 10
Delevaux and Stacey, 1980
COMMENTS: Near Co-op mine i n Gold Hill mining district. Also reported several
Pb-Pb d a t e s f o r v a r i o u s s i z e
fractions.
**
Trampas
i
Taas
1448
P i c u r i s Mountains
Peiasco Quartz Monzonite
quartz monzonite
thesis Harding
Raton mine area
B e l l , 1985
B e l l and Nielsen, 1985
COMMENTS: Age i s basedon
U-Pb
model
zircon
Taos
Quad
11E
36V1.5'
23N
4005300
105%5.5'
27
431800
#I
1448
we
r
4
one point,withlowerinterceptassignedat
**
1449 2
Tusas Mountains
TUSaS Mtn zgirracnoint e
granite
paper area
Tusas Mountain
Wobus and Hedge, 1982
77
U. o f TX, D a l l a s
Pb-Pb
model 2071206
7E
Chama
Aztec
55 Ma.
Poorlyconstrained.
R i o A r r iQuad
ba
MountainBurned
36°38'55" 106°08'36" USGS
28N
24 (
1449 *
4056300 397800
#178
f0
4
COMMENTS: Unabraded zircon. Abraded zircons give
age o f 1421 Ma.
From a d i t 250 m S o f Tusas Mtn
sumnit.
*
**
1450
SandiaMountains
Monte Largolsandia
schist
muscovite
s i l l si m
c hainsitt e
Monte Largo HAlbuquerque
i lpaper
l s area
Marvinetal.,
1988
Rb-Sr
model
Albuquerque
Bernalillo
Park
106°16.12'
35'11.25'
11N 6E
11
3894400 384500
Sandia
Quad
# I 79
USGS
1450 t
87=1.42x10-111yr
Y
Y
4
COMMENTS:
1450 t
**
Los PinosMountains
Bootleg Canyon sequence
amphibolite
Bootleg thesis
Canyon
Socorro
area
Shastri, 1993
U-Pb
concordia
apatite
Cerro Montoso Quad
Socorro
M.I.T.
1450
#I80
Y
Y
COMMENTS: E q u i v a l e n tt oS e v i l l e t a
Formation.Metamorphic
a p a t i t e . Two f r a c t i o n s o f a p a t i t e p l o t
above the
concordia,near
1450 Ma, and a r e s i g n i f i c a n t l y younger than the zircon
and sphene ages f o r the same
rock.Interpreted
as reheating event a t ca. 1450 Ma. A p a t i t e sa r ec o l o r l e s st oy e l l o w ,
hexagonal o r
anhedral fragments generally larger than
100 mesh.
**
1454 =
Picuris Mountains
muscovite
Pegmatite
Harding
pegmatite
border
zone
Harding mine area
B a l e s t r i and Brookins, 1985
Trampas
Rb-Sr
model
29
Taos
Raton
11E
Tans
36'11.53'
23N
4005425
paper
105"47.67'
428000
Quad
UNM
1454
87=1.42x10-111yr
#I81
4
COMMENTS: Samples were c o l l e c t e d and analyzed i n l a t e 1970s.
1455 i 20
**
Sandia Mountains
Sandia Granite
quartz monzonite
S. SandiaMtnsarea
paper
Steiger and Wasserburg, 1966
COMMENTS: -150 +230 mesh.
Pb-Pb
model 207/206
zircon
Albuquerque
Albuquerque
Bernalillo
35°03'50" 106°28'00'0
ION
4E
25
3880900 366250
T i j e r a s Quad
Carnegie I n s t i t u t i o n
1455 r 20
4
#I82
a
72
1455 i 20
**
SandiaMountains
Sandia Granite
quartz monzonite
S. SandiaMtnsarea
paper
Steiger and Wasserburg, 1966
Pb-Pb
model 2071206
zircon
Albuquerque
Albuquerque
Bernalillo
T i j e r a s Quad
35'03'50"
106°28'00'~
Carnegie
Institution
25
ION
4E
1455 T 20
3880900 366250
I/
COMMENTS: -230 mesh.
1457
T
**
S. Sangre de C r i s t o Mtns
Embudo g r a n i t e
granite
i a n t a Cruz Res. area
Brookins e t al., 1985
Register and Brookins, 1979
Rb-Sr
model
whole-rock
Santa Fe
Santa Fe
Santa Fe
35O58.85'
105'55.05'
10E2ON
7
3982000 417300
paper
CundiyoQuad
UNM and UNC
1457 i
87=1.42x10-11l~r
#I84
Rb-Sr
model
whole-rock
20
Taos
TaOS
36O12.93'
105°48.07'
11E 23N
4007950 428000
Trampas Quad
UNM and UNC
1457
87=1.42x10-11/~r
#I85
COMMENTS:
**
1457 i
P i c u r i s Mountains
RinconadaFormarion
Delitic schist
Copper H i L lRaton
area
Brookinsetai.,
1985
Y Y
COMMENTS: From R2 s c h i s t .
*
mine
1460
**
P i c u r i s Mountains
Vadito Groupwhole-rock
schist
felsic schist
Harding
Brookinsetal.,
1985
Rb-Sr
Trampas
model
Taos
36'11.33/
105'47.17'
23N
11E
32
4004975
429325
Taos
Quad
UNM and UNC
1460 x
87=1.42x10-111yr
#I86
Y Y
I/
COMMENTS:
**
Bernalillo
1460 f 20
Pb-PbT i j e r a s
model 2071206
35°03'50" 106'28'00"
SandiaMountains
Sandiaz i rGcroann i t e
25 I O N
4E
quartz monzonite
Albuquerque
3880900 366250
S. SandiaMtnsarea
Albuquerque
paper
Steiger and Wasserburg, 1966
Quad
Carnegie I n s t i t u t i o n
1460 = 20
#I87
I/
COMMENTS: c325 mesh, magnetic.
1460 .e 20
Sandia
Mountains
**
Pb-Pb
model 2071206
TBi e
j er rnaasl i l l o
35"03'50" 106"28'001t
ION
&E
Quad
Carnegie I n s r i t u t i o n
#I88
Taos
Trampas Quad
Cal Tech
1460 T
#I89
Steiger and Wasserburg, 1966
COMMENTS: -150 +200 mesh.
1460 i
**
U-Pb
P i c u r i s Mountains
concordia
Peiiasco Quartz Monzonite
zircon
quartz monzonite
Taos
unknown area
unpublished
Raton
S i l v e r , L. 1.. 1984, o r a l p r e s e n t a t i o n a t
I/
GSA Rocky Mountainsectionmeeting,
Durango, CO.
COMMENTS: Location unknown.
U-Pb
Nacimiento
Gallina
Arriba
or Rio
**
1460 i 10
Cal Tech
Nacimiento
Mountains
concordia
Joaquin quartz monzonite
zircon
1460
10
Abiquiu
monzonite
quartz
unpublished
S. Nacimiento
Mtns
area
Aztec
S i l v e r , L. T., 1984, o r a l p r e s e n t a t i o n a t GSA Rocky Mountainsectionmeeting,
Durango, CO.
*
COMMENTS:
Location unknown.
Peak Quad
#I90
73
**
Rb-Sr
1462 T 21
isochron
Tusas Mountains
Piedras
Tres
Granite
whole-rock
9E
quartz monzonite gneiss
Wheeler Peak
C056350
Tres Piedras area
Raton
Maxon, 1976a
Maxon, 1976b
COMMENTS: Isochronof 9 samDles.
*
1462
67
San Andres Mountains
Mineral Hill Pluton
granite
Mineral Hill areapaper Cruces
Roths, 1991
~~
Taos
36'39'
105'58.5'
28N
ALL DATA
Piedras Tres
Quad
Florida
State
22
1493
21
1462
413000
87=1.39x10-ll/yr
thesis
*
&
50
Y Y
Hill granite reported by White
161 Ma.
**
Rb-Sr
isochron
S. Sangre de C r i s t o Mtns
whole-rock
Embudo granite
granite
Santa Fe rangearea
Register and Brookins, 1979
21
-/
COMMENTS: From L i t t l e san Nicolas Canyon. Rb-Sr whole-rock age from Mineral
1466
E
U-Pb
Ana
DoRa
#I92 Bennet
Quad Mountain
concordia
32°35f46"
106°27f53'1
U. o f TX, D a l l a s
5E
6
1462 + 67
zircon
20s
White Sands
3607800 362600
Las
-/
~
(1977) i s 1190
#I91
Santa Fe
Quad
UNM
1464
-
Santa Fe
Santa Fe
(fromFullager
COMMENTS: 8 pointwhole-rockisochronfromwidely
=
#193
50
I/
paper
and Shiver, 1978, pers. comnun.)
spaced samples. Locations given
i n Brookins e t a l . ,
Pb-Pb
Sandoval
Seven Springs Quad
1465 i 30
**
model 2071206
35"53'
1O6"4lf
USGS
Jemez Mountains
GT-2 g r a nzoi rdci o nr i t e
3E
19N
7
1465 L 30
3972000 348000
granodiorite
Los Alamos
Albuquerque
unpublished
(LASL)
GT-2
Fenton Hill area
Zartman, 1979
COMMENTS: From o u t s i d e W rimValles
of
Caldera,
Fenton
Hill.
Isotopic
composition
of
1.5 Ga i n s i t u decay.
( i n i t i a l ) assumed t o be t h a t o f m i c r o c l i n e c o r r e c t e d f o r
1467 + 43
**
Rb-Sr
Arriba Rio
36'42.3'
106"14'
Tusas Mountains
isochron
Hooewell Lakewhole-rock
sranite
7E
29N
31.3
o
Chama
4062500 389506
-.r a n i t e
thesis
HopewellLakearea
Aztec
Boadi, 1986
Boadi e t al.,1987
COMMENTS: All samples were altered. Isochron of
7 samples.
1985.
#I94
Pb
#I95
Burned Mountain Quad
UNM
1467 = 43
Y Y
~~
-/
**
thesis
Quad
1467 & 35
Rb-Sr
Colfax
Touch-Me-Not-Mountain
Quad
Cimarran Range
isochron
105"15.17'
36O30.5'
UNM
Y
whole-rock
1467
35
EagleNest f e l s i c g n e i s s
87=1.42x10-111yr
granitic gneiss
Wheeler Peak
4040200 477350
Tolby
RatonCreek area
I/
Leyenberger, 1983
Brookins and Leyenberger, 1981
COMMENTS: Isochron of 5 samples. T h i s u n i t wasmapped by J.A. Grambling as granulite facies gneiss.
locations unknown, but probably between Tolby Creek and EagleNest Lake.
Tablas
z 43
** Las
Rb-Sr
1469
Tusas Mountains
isochron
Tres Piedras Granite
whole-rock
quartz monzonite gneiss
Chama
Tusas River Can area
Aztec
Maxon, 1976a
Maxon,
197613
COMMENTS: Isochron of 5 samples.
**
Pb-Pb
Tijeras
1470 L
SandiaMountains
model 2071206
25
Sandia Granite
sphene
granite
Albuquerque
S. SandiaMtnsarea
paper
Albuquerque
T i l t o n and Grunenfelder, 1968
Brookins, 1974c
COMMENTS: +325mesh,
magnetic.
Rio Arriba
36O36.73' 106"04.2'
8E28N
35
4052200 404300
thesis
#I96
Y
Sample
#I97
F l o r i dSat a t e
1501 3 44
1469
87=1.39x10-11/yr
&
43
Y
Y
d
Bernalillo
Quad
Barbara
35°03'50" 106°28'00'~ U. CA, Santa
ION
4E
1470 T
238=1.537x10-10 235=9.72x10-10
3880900 366200
I/
#198
74
1470 * 20
**
Pb-PbT i j e r a s
SandiaMountains
model 2071206
Sandia Granite
zircon
Albuquerque
quartz monzonite
S. SandiaMtns area paper
Albuquerque
Steiger and Wasserburg, 1966
COMMENTS:
Bernalillo
35°03'50" 106°28'00"
ION
4E
25
3880900 366250
Quad
Carnegie I n s t i t u t i o n
1470
20
238=1.537x10-10 235=9.72x10-10
#199
*
4
232.4.9
+ 325 mesh, nonmagnetic.
Pb-PbT i j e r a s
1470 i 20
Sandia Mountains
model 2071206
Sandiaz i rGcroann i t e
25
4E
Albuquerque
quartz monzonite
Albuquerque
paper area Mtns
S. Sandia
Steiger and Wasserburg, 1966
COMMENTS:
ALL DATA
Bernalillo
35°03'50" 106°28r00"
10N
3880900 366250
Quad
#200
Carnegie I n s t i t u t i o n
1470 i 20
238=1.537x10-10 235=9.72~10-10 232=4.9
4
+ 325 mesh, nonmagnetic.
1471
97
**
Quad
Rb-Sr Mountain
Pedernal
Torrance
UNM
isochron
Pedarnal H i l l s
1471 I: 97
Pedernal Mtn granite
whole-rock
Vaughn
granite
87=1.42x10-111yr
Fort Sumner
Pedernal Mtn area
paper
4
Mukhopadhyay e t al., 1975
Brookins, 1982
COMMENTS: Isochron of 3 p o r p h y r i t i c and 6 a l k a l i c samples. Location unknown, b u t may bePedarnalpluton.
1472 i 15
**
isochron
Mountains
Sandia
whole-rock
Sandia Granite
granite
Jaral Ranger S t a t i o n
Taggart and Brookins, 1975
Bernalillo
106'28.5'
35'11'
4E11N
12.1
3894000 365500
Rb-Sr
Albuquerque
paper
Albuquerque
#202
Sandia Crest Quad
UNM
*
1504
15
1472
87=1.39x10-111yr
#201
15
I
4
COMMENTS: Isochron of 3samples.
**
1475 *
SandiaMountains
Sandia Granite
granite
unknown area
Brookins, 1974
T i l t o n e t al., 1962
COMMENTS: Datafrom T i l t o n e t
hyacinth,euhedral,
**
1476
P i c u r i s Mountains
Harding Pegmatite
oeomatite
Raton
areamine
Harding
Brookinsetal.,
1985
.-
Pb-Pb
model 2071206
zircon
Bernalillo
#203
Quad
Carnegie I n s t i t u t i o n
1475
*
SI
238=1.537x10-101yr
235=9.72xlO-l0Iyr
4
paper
al., 1962. Same sample (A-26) as A l d r i c h e t al., 1958. Zirconsareclear,
zoned, darkinclusions,
some cores, lengthlbreadth = 2.5. Location unknown.
Rb-Sr
model
K-feldspar
Tam
Taos
36O11.53'
105'47.67'
11E23N
29
4005425 428600
Trampas Quad
UNM and UNC
1476
87=1.42~10~111vr
#204
T i j e r a s Quad
UNM
1480 E 90
#205
*
COMMENTS:
**
1480 T 90
SandiaMountains
Sandiawhole-rock
Granite
g r axneunl o
i t li ict h s
Carnue area
paper
Brookins and Majurndar, 1989
Bernalillo
106'26.5'
35'04'
ION
5E
30
3881200 368400
Rb-Sr
isochron
Albuquerque
Albuquerque
Y
4
COMMENTS: Isochron of 4 samples.
1480
*
**
Quad
Rb-Sr
Los PinosMountains
Los
whole-rock
granite
Pinos
granite gneiss
unknown area paper
Muehlberger e t al., 1966
COMMENTS: Location unknown.
Becker
3E
Socorro
Socorro
Socorro
2N
#206
23
U. of TX, A u s t i n
1430 i
1480
4
i
Y
Y
87=1.47x10-111yr
ALL DATA
I5
#207
U-Pb
San
Rosilla
Miguel
Peak Quad
35O42.55'
105O44.33'
U. o f Kansas
concordia
Macho Creek g r a n i t e
zircon
11E 17N
11
1480 =
granite
Santa Fe
3952100 433200
Macho
Santa
Creek area
Fe
paper
4
Robertson and Condie, 1989 (age i s reported as a pers. cownun, 1984, S. Bowring)
1480
T
S. Sangre de C r i s t o Mtns
COMMENTS:
0.5 km E o f P i c u r i s - P e c o s f a u l t
on Macho Creek.
**
te
Pb-Pb
Tijeras
Bernalillo
1480 T
model 2071206
35'03'50" 106'28'00"
Sandia Mountains
Sandia Granite
sphene
25 ION
4E
grani
Albuquerque
3880900 366200
Albuquerque
S.area
Mtns
Sandia
paper
T i l t o n and Grunenfelder, 1968
Brookins, 1974c
COMMENTS: c325 mesh, nonmagnetic.
**
1481 i
P i c u r i s Mountains
HardingPegmatite
pegmatite
replacement
micas
Raron
areamine
Harding
B a l e s t r i and Brookins, 1985
Rb-Sr
model
mica
Taos
Taos
36'11.53'
11E
23N
4005425
105"47.67/
29
428000
U. CA,
#208
Quad
Santa
Barbara
1480 i
238=1.537x10-10
4
235=9.72~10-10
Trampas Quad
UNM
1031 T
87=1.42xlO-l1/vr
#209
Magdalena Quad
Miami Univ.
1485
1517 x 239
87=1.39x10-11/yr
#210
COMMENTS: Samples were c o l l e c t e d and analyzed i n l a t e 1970s.
**
Rb-Sr
1485 + 234
Magdalena Mountains
isochron
Garcia Canyon metagabbro
whole-rock
amphibolite
Magdalena
thesis
Garcia
Socorro
Canyon area
White, 1977
COMMENTS: Isochronof
Socorro
34O5'
2.3s 3W
107°10'
T
234
Y
4
6 samples.
Rb-Sr
Colfax
Touch-Me-Not Mountain Quad
1488 + 42
**
36O31.5'
105'14.5'
UNM
Cimarron Range
isochron
Y Y
1488 .L 42
Nest
Eagle
whole-rock
granite
87=1.42x10-11/yr
granite
Wheeler Peak
4041500 478700
thesis
Tolby
RatanCreek area
4
Leyenberger. 1983
Brookins and leyenberger. 1981
COMMENTS: Isochron of 4 samples. J . A. Grambling mapped t h i s as granitic gneiss. Location of
samples
approximate.
1490
i
**
Rb-Sr
S. Sangre de C r i s t o Mtns
P i d l i t e pegmatite
pegmatite
b i d l i t area
e mine
A l d r i c he ta l . ,
1957
Mora
35957.3'
105'18.7'
mica
Santa Fe
Sanra Fe
Mora Quad
Carnegie l n s r i t u t i o n
1490 t
#211
#212
4
COMMENTS:
**
Flat Rb-Sr
Office
Post Cibola
1490 f. 90
UNM
108'09'
35'10'
Isochron
ZuniMountains
whole-rock
12.1
11N
1490
M i r a b e l" a p l i t e "
g r a n o d i o r i t e g, r a n i t e a, p l i t
Zuni
4
Post O f f i c epaper
Flatarea
Gallup
Brookins and Della Valle, 1977
Brookins, 1982
Brookins e t al., 1977
COMMENTS: Isochron of 6 g r a n o d i o r i t e and 6 g r a n i t e - a p l i t e samples.
**
Pb-Pb
Bernalillo
1490 i
SandiaMountains
model 207/206
Sandia Granite
sphene
granite
Albuquerque
Albuquerque
NE o f Albuquerque
paper
Brookins, 1974c
T i l t o n and Grunenfelder, 1968
COMMENTS: Datafrom T i l t o n and Grunenfelder(1968)
and A l d r i c h e t a l .
Sandiaescarpment NE o f Albuquerque.
Quad
90
#213
Y
Y
Quad
U. CA, SantaBarbara
Sl
1490 T
238=1.537~10-10/yr
235=9.72x10-10/yr
4
(1958). Sample from lower part of
#214
16
**
1492
S. Sangre d e C r i s t o Mtns
Embudo
whole-rock
granite
granite
Pacheco Santa
Canyon area
Brookins e t al., 1985
Register and Brookins, 1979
COMMENTS:
*
Rb-Sr
model
ALL DATA
Santa Fe
35'47.0'
105'53.03'
18N
16
3960075 420100
paper
10E
Santa Fe
Fe
Rb-Sr
1493 r 30
**
Pedernal H i l l s
M-2whole-rock
metavolcanic
metarhyodacite
Vaughn
Pedernal
Fort
Mtn area
Sumner
Armstrong and Holcombe, 1982
Pedernal
Torrance
34-47.55' 105°40.63'
7N
12E 33
3850050 438100
paper
Tesuque Quad
UNM and UNC
1492 f
87=1.42x10-11/yr
#215
4
#216
Mtn Quad
U. of B r i t i s h Columb
1493
T
30
Y
Y
4
COMMENTS: Approximate l o c a l i t y .
**
1494 T
Mountains
Picuris
muscovite
Pegmatite
Harding
pegmatite
border
zone
Raton
areamine
Harding
B a l e s t r i and Brookins, 1985
Rb-Sr
Trampas
Taos
model
105'47.67
36'11.53'
29
11E
23N
4005425
Taos
paper
428000
#217
Quad
UNM
1494
87=1.42x10-111yr
4
COMMENTS: Samples were c o l l e c t e d and analyzed i n l a t e 1970s.
**
1495 .t
P i c u r i s Mountains
Vadito Group s c h i s t
felsic schist
paper
Harding mine
area
Brookins e t al., 1985
Rb-Sr
model
whole-rock
Taos
Raton
Taos
36O11.33'
105'47.17'
11E 23N
32
4004975
429325
Trampas Quad
UNM and UNC
1495 T
87=1.42x10-111yr
#218
Y
Y
d
COMMENTS:
**
1497 i
P i c u r i s Mountains
HardingPegmatite
pegmatite
cleavelandite-qtz
paper
Harding mine
area
B a l e s t r i and Brookins, 1985
Rb-SrTrampas
model
cleavelandite
Taos
Raton
Taos
36'11.53'
105'47.67'
23N
11E
29
4005425
428000
*
4
COMMENTS: Samples were c o l l e c t e d and analyzed
1500 1 120
**
Rb-Sr
Jemez Mountains isochron
GT-2 and EE-2 granodiorite
whole-rock
biotite oranodiorite
Los Alamos
Fenton H
i
l area
Albuquerque
paper
Brookins and Laughlin, 1983
i n l a t e 1970s.
sandoval
35'53.03'
106°40.83'
2E 19N
13
3972200 348300
Seven Springs Quad
UNM
1500 T 120
87=1.42x10-11/vr
GT-2 and EEl2
COMMENTS: These datasupercedeBrookins
and Laughlin, 1976. Isochronof
from EE-2. Approximate l o c a l i t y . Depth = 2588-2925 m.
**
1500 r
Big Burro Mountains
diabase
Burro Mtn zircon
Lordsbursdike diabase
Round Mountain area
Stacey and Hedlund, 1983
U-Pb
Gold
unknown
silver city
#219
Quad
UNM
1497
87=1.42x10-11/yr
Hidalgo
32'29.1'
108'34.0'
21s
17W
14
3596600 728570
paper
14 samplesfrom
Hill Quad
USGS
1500 z
#220
Y
Y
GT-2 and 6 samples
#221
4
COMMENTS: Very L i t t l e z i r c o n i n rock. Age i s h i g h l y dependent on compositionof comnonPb c o r r e c t i o n . Diabase
c u t s 1445 Ma BurroMountaingranite.Gold
Hill m i n i n g d i s t r i c t . I n c l u d e s
2071206,2061238,2071235
ages.
ea
77
1500 I: 25
**
Jemez Mountains
GT-2 g r a n o d i o r i t e
granodiorite
Fenton Hill area
Zartman, 1979
Sandoval
35'531
106°41'
13
2E19N
3972000 348000
(LASL)
Pb-Pb
model 2071206
sphene
Los Alamos
paper Albuquerque
ALL DATA
Seven Springs Quad
USGS
1500 T 25
GT-2
COMMENTS: From outside W rim of Valles Caldera,Fenton
Hill. Isotopic composition
be t h a t o f m i c r o c l i n e c o r r e c t e d f o r 1.5 Ga i n s i t u decay.
~~~~
~~
~
#222
o f Pb ( i n i t i a l ) assumed t o
~~
**
1501 i
P i c u r i s Mountains
Vadito Groupwhole-rock
schist
felsic schist
Raton
areamine
Harding
Brookinsetal.,
1985
Rb-Sr
model
Taos
36'11.33'
105'47.17'
11E
23N
32
429325
4004975
paper
Taos
Trampas Quad
UNM and UNC
1501 I
87=1.42x10-111yr
#223
Y Y
4
COMMENTS:
1502
**
P i c u r i s Mountains
muscovite
Pegmatite
Harding
pegmatite border zone
mine
Harding
B a l e s t r i and Brookins, 1985
Rb-Sr
Trampas
model
Taos
Taos
36°11.53r 105'47.67/
29 11E
23N
4005425 428000
Quad
UNM
1502 T
87=1.42x10-11/yr
#224
Hill Quad
#225
4
COMMENTS: samples were c o l l e c t e d and analyzed i n l a t e 1970s.
**
1505 i
Big Burro Mountains
Burro Mtn diabase
diabase dike
Round Mountain
area
Stacey and Hedlund, 1983
Pb-Pb
Gold
Hidalgo
model 2071206
32O29.1'
108°34.0'
21s
17W
14
zircon
Lordsburs
3596600 728570
silver city
paper
USGS
1505
T
4
COMMENTS: Al mesh sizes.
**
1510 I_
P i c u r i s Mountains
HardingPegmatite
Desmati t e border zone
Haidins mine area
B a l e s t r i and Brookins, 1985
Rh-Sr
model
muscovite
29
Taos
Raton
11E
Taos
36'11.53'
105'47.67'
23N
4005425 428000
Trampas Quad
UNM
1510 I
87=1.42x10-11/~r
#226
Sandia Crest Quad
UNM
1550 i 50
1517
87=1.39x10-11/yr
#227
COMMENTS: samples were c o l l e c t e d and analyzed i n l a t e 1970s.
1517 L 49
**
SandiaMountains
sandia Granite
g r aonr ibt e
icular
Albuquerque
Sandia
areaCrest
Enz e t al., 1979
Brookins e t at., 1975
Albuquerque
gneiss
Rb-Sr
whole-rock
Albuquerque
Bernalillo
35O12.95'
106°28.12'
4E11N
1
3897750 366300
paper
i
49
-/
COMMENTS:
**
1518 .L 210
Jemez Mountains
GT-2 granodiorite
epidote
granodiorite
Fenton Albuquerque
H
unpubished
ill area
Zartman, 1979
Pb-Pb
model 2071206
3E
Los Alamos
Sandoval
35'53'
106°41'
19N
7
3972000 348000
GT-2(LASL)
COMMENTS: From outside W rim o f Valles Caldera,
Fenton
Pbassumed
**
Sandoval
1520 *
sandia Mountains
Juan Tabo Series
bi-musc
CaRon d e lAlbuquerque
paper
Agua area
Marvin et al.,
1988
COMMENTS:
#228
Seven Springs Quad
USGS
1518 T 210
Hill.
Isotopic
composition
t o be t h a t o f m i c r o c l i n e c o r r e c t e d f o r 1.5 Ga i n s i t u decay.
Rb-Sr
model
muscovite
of initial
P l a c i t a s Quad
35'16.27'
106"28.75'
4E 12N
13
3903900 365500
#229
USGS
1520 .t
87=1.C2xlO-lllyr
4
Y Y
rea
78
**
1520 i 210
Jemez Mountains
GT-2 granodiorite
epidote
granodiorite
unpublished
Hill area
FentonAlbuquerque
Zartman, 1979
Pb-Pb
model 207/206
3E
Los ALamos
Seven Springs Quad
USGS
1520 z 210
sandoval
35'53'
106941'
7
19N
3972000 348000
(LASL) GT-2
COMMENTS: From outside W rim of Valles Caldera,Fenton
be t h a t of m i c r o c l i n e c o r r e c t e d f o r
Hill. I s o t o p i c c o m p o s i t i o n o f i n i t i a l
1.5 Ga i n s i t u decay.
**
1527 T 39
Rb-Sr
Manzano Mountains isochron
g rwahnoolde
Oi-o
jri ro
ta
ict ek
g r ab niBooetdilte
ieonr i t e
paper
Socorro
Guadalupe Peak
area
White, 1979
White, 1978
COMMENTS: Isochron of 10 samples.
**
1529 = 42
P i c u r i s Mountains
Pegmarite
Harding
muscovite
pegmatite wall-zone
paper
Harding mine
area
Brookinsetal.,
1979
Torrance
34'48'
106'25l
7N
5E
3852000 369000
Bosque Peak Quad
Miami Univ.
1560
39
1527
87=1.39x10-11/yr
*
Pb assumed t o
#231
=
39
Y Y
4
White, 1977
Taos
36O12.07; 105*47.65'
23N
11E
29
4005450 428600
Rb-sr
isochron
105"47.65'
Raton
Trampas Quad
UNM
1529 .L 42
87=1.42x10-11/yr
#232
sourh Peak Quad
UNM
1530
120
#233
Tesuque Quad
UNM and UNC
1534 T
87=1.42x10-11/yr
#234
4
COMMENTS:
**
1530 z 120
Florida Mountains
F l o r i d a Mtns g r a n i t e
qtz
manzanite-granodiorite
unknown area
paper Cruces
Brookins, 1980
COMMENTS:
1534
Rb-Sr
isochron
whole-rock
Deming
Las
Luna
32'07'
107"37'
*
3550000 255000
Isochron o f 8 samples. Location o f samples unknown.
i
**
Santa
S. Sangre de C r i s t a Mtns
Embudo
whole-rock
granite
granite
Pacheco Canyon area
Brookins e t al., 1985
Register and Brookins, 1979
COMMENTS:
**
1542 i
Big Burro Mountains
B u l l a r d Peakzircon
Series
S i l gv ne er si si l sl - g t
B u l l a r d Peak area
Stacey and Hedlund, 1983
COMMENTS: -400 mesh.
1550 t 130
Rb-Sr
model
10E
Santa Fe
Santa Fe
Pb-Pb
Redrock
model 207/206
City
S i l v e r City
Fe
35O47.0'
105'53.03'
18N
16
3960075 420100
paper
Grant
32'42.0'
108'30.8'
18s
16W 32
3620600 733100
paper
4
NE Quad
USGS
1542
=
#235
Y
Y
4
Blackhawk m i n i n gd i s t r i c t .
**
Jemez Mountains
EE-2 monzogranite
khole-rock
monzogranite gneiss
Fenton H i 1 l area
Brookins and Laughlin, 1983
Rb-Sr
isochron
2E
Los ALamos
Albuquerque
paper
COMMENTS: These datasupersedeBrookins
Sandoval
35'53.03'
106°40.83r
19N
13
3972200 348300
Seven Springs Quad
#236
UNM
1550 * 130
87=1.42~10-11/yr
Y Y
and Laughlin, 1976. Isochron of 9 samples. Approximate Locality.
**
Arboles
Rb-Sr
Trampas Taos
Quad
1550 r 130
isochron
36'11'
105'48.6'
UNM and UNC
P i c u r i s Mountains
Puntiagudo
Granite
Porphyry
whole-rock
11E
23N
31
1550 * 130
granite
Taos
4004700 427200
87=1.42x10-11/vr
cerro
4
Brookinsetal.,
1985
Register and Brookins, 1979
Register, 1979
COMMENTS: Isochron o f 6 samples.
#237
Y .Y
I9
**
er
Aztec
.
1550 .e 40
Tusas
isochron
Mountains
Tusas Mtn g r a n i t e
granite
area
Tusas Mountain
Wobus and Hedge, 1982
COMMENTS:
Rb-Sr
whole-rock
Chama
ALL DATA
Rio Arriba
Quad
Mountain
Burned
36'39'
106'08.5'
USGS
28N
7E
24
1550 * 40
4056350 398000
4
Isochron of 4 samples. Paper a l s o includes Pb-Pb model ages o f g r a n i t e a t
1550 x
**
Big Burro Mountains
Burro Mtn g r a n i t e
granite
Round Mountain area
City
Hedlund, 1978a ( c i t e d as J . S.
K-Ar
Gold
Hidalgo
32'27.87'
108'34.25'
biotite
21s
17W
23
Lordsburg
3594300
728450
Silver
paper
Stacey, 1977, w r l t t e n cornnun.)
COMMENTS: U-Pb z i r c o n age f o r t h i s g r a n i t e i s
#238
1445
T
1449 and 1421 Ma.
#239
Hill Quad
USGS
1550
Y gn
I
4
15 Ma (Stacey and Hedlund, 1983).
**
U-Pb
Grant
1550 z
Redrock NE Quad
Big Burro Mountains
2 p t concordia
32'42.0'
108'30.8'
USGS
B u l l a r d Peak Series
zircon
18s
16W
32
Y Y
1550 *
sill-gt gneiss
S i l v e r City
3620600
733100
B u l l a r d Peak
Silver
area
City
paper
4
Stacey and Hedlund, 1983
Hedlund, 1980 (map; c i t e s z i r c o n d a t e o f
1560
COMMENTS: 2 f r a c t i o n sp l o rt o oc l o s e l yt o g e t h e rf o rm e a n i n g f u li n t e r c e p t s .i n c l u d e s
207/206, 2061238.
207/235 ages f o r 2 mesh sizes. Blackhawk m i n i n g d i s t r i c t .
~
*I
1554 i
Florida
Mountains
Florida gneiss
granitic gneiss
Capitol Dome areapaper Cruces
Evans and Clemons, 1988
COMMENTS:
ro
Luna
32'09'15"
107939'11"
1554
25s
8W
3
3560430 249720
I n t e r p r e t e d as minimum age f o r emplacement.
**
1556 I_
F l o r i d a Mountains
F l o r i d a gneiss
granitic gneiss
C a p i t o l Dome area
Evans and Clemons, 1988
COMMENTS:
Pb-Pb
model 2071206
zircon
Deming
Las
~
~~
#240
~ ~ _ _ _
#241
C a p i t o l Dome Quad
USGS
Y Y
i
4
Mesh -100+150.
~
Pb-Pb
Luna
model 2071206
32°09'15"
107°39'11"
zircon
1556
255
8W
3
Deming
249720
3560430
Las Cruces
paper
I n t e r p r e t e d as minimum age f o r emplacement.
Capitol Dome Quad
USGS
*
Y
Rb-Sr
model
Taos
Raton
Y
4
Mesh -250c325.
1559 i 52
**
Rh-Sr
Socorro
BeckerQuad
LosPinos Mountains
isochron
34'23.5'
106"33.0'
UNM
S e v i l l eM
t ae t a r h y o l i t e
Fm
whole-rock
2N
4E
52 155917,2
metarhyolite
3806000
357550
87=1.42x10-111yr
paper Pinon
Socorro
Canyon area
4
Brookins e t al., 1980
Brookins, 1982
COMMENTS: isochron of 4 metarhyolite and 1 amphibolite sample. Uses data of Bolton,
1976.
1565
**
P i c u r i s Mountains
Pegmatite
Harding
cleavelandite
pegmatite
cleavelandite-qtz
Harding mine
area
paper
B a l e s t r i and Brookins, 1985
~~
#242
TaOS
36'11.53'
105'47.67'
23N
11E
29
4005425 428000
#243
Y Y
Trampas Quad
UNM
#244
1565 T
87=1.42x10-11/yr
4
COMMENTS: Samples were c o l l e c t e d and analyzed i n l a t e 1970s.
**
1567 i
Big Burro Mountains
B u l l a r d Peakzircon
Series
Sgi lnsveielirls- sg t
B u l l a r d Peak area
Stacey and Hedlund, 1983
COMMENTS: -250+200
mesh.
Pb-Pb
Redrock
model 2071206
City
S i l v e r City
Grant
32'42.0'
108'30.8'
18s 1567
16W
32
733100
3620600
paper
Blackhawk m i n i n gd i s t r i c t .
#245
NE Quad
USGS
i
4
Y Y
x0
1568
f
91
**
San Andres Mountains
Mineral Hill p l u t o n
quartz monzonite
Mineral Hill area
White, 1977
Rb-Sr
isochron
whole-rock
Lascruces
Cruces
Las
ALL DATA
Ana Doria
White Sands, Organ Quad
Miami Univ.
1568 T 91
1602 L 91
87=1.39xlO-I1/yr
#246
Manzano
Quad
Peak
UNM
1569 .L 314
87=1.42x10-11/yr
#247
21s 21,Z4E
4
thesis
COMMENTS: Isochron of 6 samples.
*
314
**
1569
Valencia,
Torrance
Scholle,
Rb-Sr
Manzano Mountains
isochron 106'30' 34'30'
Priest Quartz Monzonite
whole-rock 4.5E 3.4N
quartz monzonite
Belen and Socor
Estadio Canyon area
Socorro
paper
Brookinsetal.,
1980
Brookins. 1982
COMMENTS: Isochronof 6 samples. Used data of Bolton, 1976.
1570 T
**
F l o r i d a Mountains
Florida gneiss
granitic gneiss
Capitol Dome area
Evans and Clemons, 1988
Pb-Pb
model 207/206
zircon
Deming
LasCruces
tuna
32°09'15" 107°39'11"
8W
3
25s
3560430 249720
paper
COMMENTS: I n t e r p r e t e d as minimum age f o r emplacement.
**
1576 + 72
Rb-Sr
SandiaMountains
isochron
Cibola Gneiss
whole-rock
granite gneiss
Albuquerque
T i j e r a s Canyon
Albuquerque
area
paper
Taggart and Brookins, 1975
Brookins, 1982
COMMENTS: Isochron of 7 samules.
**
1583 t 220
Jemez Mountains
GT-2 g r a n o d i o r i t e
granodiorite
Fenton Hill area
Zartman, 1979
4
Capitol Dome Quad
USGS
1570
#248
Y
4
Mesh -150 +200.
Bernalillo
T i j e r a s Quad
UNM
1576
1610 5 73
87=1.39~10-11/yr
9.10
4.5E
1,20
#249
=
72
Y
*
Y
4
Pb-Pb
model 207/206
epidote
3E
Los Alamos
unpublished
Albuquerque
Seven Springs Quad
Sandoval
106'41'
35'53'
7
19N
3972000 348000
#250
USGS
1583
(LASL)
T
220
GT-2
COMMENTS: From outside W rim Voaf l l e s
Caldera,
Fenton
Hill.
Isotopic
composition
Pbassumed t o be t h a t o f m i c r o c l i n e c o r r e c t e d f o r
1.5 Ga i n s i t u decav.
**
1584
P i c u r i s Mountains
Glenwoody Formation
metarhyolite
P i l a r c l i f f s area
Brookinsetal.,
1985
Y
Trampas
Rb-Sr
model
whole-rock
Taos
Racon
Taos
36V4.93I 105O48.97'
23N
11E
6
4011650 426700
paper
Quad
UNM and UNC
1584 i
87=1.42x10-11/yr
of i n i t i a l
#251
Y
Y
4
COMMENTS:
**
U-Pb
Taos
C o s t i l l a Quad
1585 L
#252
TaosRange
concordia
36"53'
105°31'
U. o f Kansas
Urraca Ranch zircon
gneiss
1585 r
Y Y
g n feei sl ssi c
Wheeler Peak
4081400 454000
Urraca Ranch area
unpublished
Raton
4
Bowring, S.A. (1982, personalcomnunication)
Lipman and Reed, 1989
COMMENTS: On d i r t road 2.8 km SE o f Urraca Ranch. Lipman and Reed (1989)""The
s i g n i f i c a n c e o f r h e s e ages i s
uncerrain."According
t o S.A. Bowring (1992, personalcomnunication)these
may bemetamorphic
zircons. Uncertainty 4 0 Ma.
*
1598
**
Picuris Mountains
Glenwoody Formation
whole-rock
metarhyolite
P i l a r area
paper
Brookinsetal.,
1985
COMMENTS:
Rb-Sr
model
11E
T.WS
Raton
Taos
36'15.95'
105O47.23'
24N
32
4013550 429300
Carson Quad
#253
UNM and UNC
1598 =
87=1.42x10-11/yr
4
Y
Y
81
ALL DATA
**
aper
Socorro
1601 = 239
Rb-Sr
Socorro
Los
Mountains
isochron
Pinos
34'22'
106"34'
Los Pinos granite
whole-rock
granite
Socorro
3803000 355000
area
Whiteface Mtn
Brookinsetal.,
1980
Brookins, 1982
COMMENTS: Isochron of 6 samples. Data arefromBolton,
1976.
**
1608 t
S. Sangre de C r i s t o Mtns
Rb-Sr
isochron
whole-rock
Taos
Raton
Rana Quartz Monzonite
aplite
various areas
Fullager and Shiver, 1973
COMMENTS:
Isochron of
2samples
**
1608 r
Black Range
P
Sgzipcri rakicneoigtn
ttse
granophyre
Kingston mining dist.
Stacey and Hedlund, 1983
Becker and Cerro Montoso Quad
UNM
1601 3 239
87=1.42x10-ll/yr
#254
Trampas Quad
UNC
1642 +
1608
87=1.39x10-11/~r
#255
-/
Taos
36'9.95'
105'48.82'
11E 22N
6
4002450 426850
*
o f Rana q t z monzonite.
Pb-Pb
model 207/206
Cruces
Las
Sierra
32O54.8'
107O42.4'
165 8W
18
3644650 2k6850
Paper
Kingston Quad
#256
USGS
1608 r
.\/
COMMENTS: +250 mesh.
zircon
ea
**
1610 i
F l o r i d a Mountains
gneiss Florida
granitic gneiss
C a p i t o l Dome area
Evans and Clemons, 1988
U-Pb
2 p t concordia
Deming
LasCruces
Luna
32°09'15z' 107°39'112'
25s
8W
3
3560430 249720
paper
COMMENTS: I n t e r p r e t e d as minimum age f o r emplacement. Based on2
**
1615 T 15
Rb-Sr
San PedroMountains
isochron
San Pedro
monzonite
whole-rock
quartz
q t zd i o r i t e & qtzmonzoniteAbiquiu
Nacimiento
Pk area
paper
Aztec
Wobus and Hedge, 1980
1E
Rio Arriba
106'48'
36'1.5'
21N
c a p i t o l Dome Quad
USGS
1610 T
**
mine
Rb-Sr
Trampas
model
lepidolite
Taos
Y
Y
-/
points. Discordant zircons.
Nacimiento Peak Quad
USGS
1615 r 15
87=1.42x10-11/yr
#258
Y Y
-/
COMMENTS: Isochron of 7 samples. Woodward (1987) n o t e d t h a t t h i s u n i t y i e l d e d
(L.T. S i l v e r , Ders. corn., 1972).
1616 t
P i c u r i s Mountains
Harding Pegmatite
pegmatite
replacement
micas
Harding
B a l e s t r i and Brookins, 1985
#257
Taos
36"11.53' 105'47.67'
23N
11E
29
428000
4005425
U-Pb z i r c o n age o f 1730
Quad
i
20 Ma
#259
UNM
1616 f
87=1.k2x10-11/yr
4
COMMENTS: Samples were c o l l e c t e d and analyzed i n l a t e 1970s.
*-
1620 i 40
Rb-Sr
Seven Springs Quad
#260
Sandoval
Jemez Mountains
isochron
35O53.03' 106'40.83'
UNM
GT-2 and EE-1 monzogranite
whole-rock
Y Y
13
2E
19N
1620 T 40
monzogranitic gneiss
Los Alamos
3972200 3k8300
87=1.42x10-11/yr
Fenton Hill area
Albuquerque
paper
GT-2 and EE-1
Brookins and Laughlin, 1983
COMMENTS: These datasupercedeBrookins
and Laughlin, 1976. Isochronof 24 samplesfrom GT-2 and 1 sample
from EE-1. Approximate Locality. Depth = 731 m t o 2588 m.
**
1621 t 27
S. Sangre d e C r i s t o Mtns
Rb-Sr
isochron
whole-rock
Taos
Raton
Trampas,
Taos
Peiiasco, EL V a l l e Quad
UNC
1656
27
1621 T 27
87=1.39x10-ll/yr
#261
Embudo g r a n i t e
g r a n i t e ,a p l i t e
various areas
paper
-/
Fullager and Shiver, 1973
COMMENTS: Isochron o f 9 samples, i n c l u d i n g Rana q t z monzonite, Pefiasco q t z monzonite, and "Embudo g r a n i t e "
from widely spacedareas.
82
ALL DATA
1621 + 15
**
U-Pb
Arriba Rio
Quad
#262
Tusas Mountains
concordia
Florida State
Piedras
Granite
Tres
zircon
1654 I: 15
1621 * 15
Y an
granite
238=1.52x10-10 235=9.72x10-10
various areas
4
thesis
.Milxnn~
.-...
. ., 1976.
... .Maxon, 1976b
COMMENTS: Upper i n t e r c e p t age i s from 7 samples from 4 d i f f e r e n t l o c a l i t i e s i n Taos and Rio Arriba counties.
** Socorro
Rb-Sr
Peak
Wrye
SW Quad
1625 i
OscuraMountains
33'51.27'
106'23.95'
U. o f TX, A u s t i n
Sun
No.
1 Bingham StategneiK-feldspar
5s
5E
23
1570 =
1625
Y
granitic gneiss
Oscura
Mountain
3746700 370625
87=1.47x10-11/yr
N o f OscuraMtns
Oscura
Mountain
paper
Sun No. 1 Bingham State
Muehlberger et al., 1966
Muehlberger and Denison, 1964
COMMENTS: From n o r t h o f Oscura Mtns. Sample frompartofsubsurface"centralgranitebelt."
*
1625 r 49
Quad
**Becker
LosPinosMountains
S e v i l l eM
t ae t a r h y o l i t e
metarhyolite
Pinon Canyon area
thesis
Bolton, 1976
COMMENTS:
Fm
Socorro
34'23.5'
106'33.0'
2N
17,2
3806000 357550
**
1627 r
Picuris Mountains
Glenwoody Formation
metarhvolite
P i tar
Brookinsetai.,
1985
Rb-Sr
A r r i b aR i o
36'39.67'
106'06.23'
whole-rock
8E 28N
17
Cham
4057700 400750
Aztec
Maxon(197613)
Rb-Sr
model
whole-rock
Taos
Raton
Y
#264
UNM
*
50
1660 1625
87=1.39xIO-l1/yr
d
49
Y
Y
4
Isochron of 4 m e t a r h y o l i t e and 1 amphibolite sample. Samples c o l l e c t e d b y K.C.
1626 d 17
**
Tusas
isochron
Mountains
Tres Piedras Granite
qtz monzonite gneiss
Tusas Mtn thesis
area
Maxon, 1976a
Maxon,
197613
COMMENTS: Two pointisochron.
area
Rb-Sr
isochron
whole-rock 4E
Socorro
Socorro
#263
Mule Canyon Quad
FloridaState
1661 5 17
1626
87=1.39x10-11/yr
Condie.
#265
17
Y Y
4
l i s t s Rb-Sr isochron age of 1491 Ma.
Taos
36O16.02'
105O47.k2'
11E 24N
32
4013650 429025
CarsonQuad
UNM and UNC
1627 x
87=1.42x10-11/vr
#266
Y Y
4
COMMENTS:
1628
*
**
19
S. Sangrede
C r i s t o Mtns
whole-rock
Embudo granite
g r a n i t e ,a p l i t e
various areas paper
Fullager and Shiver, 1973
COMMENTS:
1630
T
Valdez
Taos
Taos
Raton
Trampas, Peiiasco, EL V a l l e Quad
UNC
1663 & 19
1628 T 19
87=1.39x10-11/yr
#267
4
Isochron of 7 samples, i n c l u d i n g Rana q t z monzonite, Peiiasco q t z monzonite, and Embudo granite.
250
**
S. Sangre
de
area
Rb-Sr
isochron
C r i s t o Mtns
Pecos Complex
amphibolite
Rio
Ward, 1990
Ward, 1986
Rb-Sr
isochron
whole-rock
Santa Fe
Fe
Mora
35'53'16.
105'34'41.
8
13E
19N
3971500 447850
paper
Pecos F a l l s Quad
UNM
1630 I_ 250
#268
Y
Y
4
COMMENTS:
**
Taos
1630 t
U-Pb
model
Picuris Mountains
36'11.75'
105O45.75'
Cerro
Metadacite
Alto
zircon
11E 23N
27
metadacite
Taos
4005750 431450
Hardingminearea
Raton
thesis
B e l l , 1985
B e l l and Nielsen, 1985
COMMENTS: Age i s based on 1 point.withlowerinterceptassigned
Trampas Quad
#269
U. of TX, D a l l a s
1630
Y fo
i
4
a t 55 Ma.
Poorlvconstrained
age.
83
*
1632
24
San Andres Mountains
Mayberry
zircon pluton
quartz monzonite
Gardner Peak area
Roths, 1991
U-Pb
concordia
Doiia Ana
32O51'07" 106°34f23"
17s 4E
7
3635750
352700
White Sands
paper
Las Cruces
ALL DATA
Gardner Peak Quad
#270
U. o f TX, Dallas
1632
.L
24
-/
COMMENTS: Zircons are discordant.
1638 * 40
**
S. Sangrede C r i s t o Mtns
Embudo g r a n i t e
granite
various areas
Fullager and Shiver, 1973
COMMENTS:
Rb-Sr
isochron
whole-rock
Taos
Raton
Trampas,
Taos
paper
Peiiasco, EL V a l l e Quad
UNC
1673 i 41
1638 I: 40
87=1.39x10-11/yr
#271
-/
Isochron o f 5 samples, i n c l u d i n g Rana q t z monzonite, Peiiasco q t z monzonite, Embudo granite.
**
1640 t 40
SandiaMountains
Juan Tabo khole-rock
Series
s c h i s t and amphibolite
Caiion d e l Agua area
Brookins and Majumdar, 1983
Majumdar, 1985
Rb-Sr
isochron
Albuquerque
Albuquerque
Sandoval
35'16'
106'29'
12N
4E
13.1
3903500
364000
paper
Rb-Sr
isochron
whole-rock
Santa Fe
Santa Fe
Mora
35"52'49. 105O33'19.
13E 19N
10
3970600 449875
paper
P l a c i t a s Quad
UNM
1640
40
87=1.42~10-111yr
*
#272
. Y
Y
4
COMMENTS:
1640
230
**
S . Sangre de C r i s t o Mtns
Pecos Complex
amphibolite
Rio Mora area
Ward, 1990
Ward, 1986
Pecos F a l l s Quad
UNM
1640
230
#273
Y
Y
-/
COMMENTS:
*
1643
**
U-Pb
Taos
C o s t i l l a Quad
#274
TaosRange
concordia
36O53.5'
105°31.75'
U. of Kansas
Jarosa Canyon gneiss
1643 9
Y Y
zircon
felsic gneiss
Wheeler Peak
4082700 653000
-/
unpublished
UrracaRaton
Ranch area
Bowring, S. A., 1992, unpublisheddata.
Lipman and Reed, 1989
COMMENTS: I n Jarosa Canyon, E of Urraca Ranch. Lipman and Reed (1989)--"The s i g n i f i c a n c e of these ages i s
uncertain."According
t o S.A. Bowring (1992, personalcomunication)these
may bemetamorphic
zircons. Uncertainty <IO Ma.
1644 T
Taos
U-Pb
L a t i r Peak Quad
Taos Range
concordia
36'51.5'
105'23.15'
U. o f Kansas
C o s t i l l a Ck qtz
monzonite
zircon
30N
1644 15E
1
f.
monzonite
quartz
Wheeler Peak
4079100 465600
4
C o sabstract
t i l l a Raton
Creek area
B o w i n g e t al., 1984
Reed, 1984
Lipman and Reed, 1989
COMMENTS: Along Costilla Creek, 1.4 km
NU
of j u n c t i o n w i t h L a t i r Creek. Uncertainty 4 0 Ma.
**
1647 t
Black Range
Pickett Springsz i rgcr oa n i t e
granophyre
Kingston mining dist.
Stacey and Hedlund, 1983
Pb-Pb Kingston
model 2071206
Hatch
LasCruces
Sierra
32'54.8'
107°42.4t
16s 1647
8W
18
3644650 246850
paper
#275
Y
gn
Quad
#276
USGS
i
-/
COMMENTS: -250 + 325 mesh.
1648 T 3
LemitarMountains
z i r c o n g r a n i t eL e m i t a r
granite
paperSocorro
S. Lemitar
area
Mtns
Bowring e t a t . , 1983
COMMENTS:
Quad
U-Pb
Lemitar Socorro
34O08'
106O59'
concordia
2s
1w
18
Socorro
3778500
317000
#277
U. o f Kansas
1668
I/
*
3
Y
gn
84
1650
=
ALL DATA
10
U-Pb
Santa Fe
Reservoir
McClure
Quad
#278
C r i s t o Mtns
Concordia
35'42.0'
105'45.5'
U. o f Kansas
11E
15
1650
10
Dalton-Canyon
succession
z i rcon
17N
Y Y
quartz porphyry
Santa Fe
3950500 431400
Dalton Santa
Canyon area
Fe
thesis
d
LJID~
M . S . ~ 19R7
.F ..~,
Bowring and Condie, 1982
COMMENTS: Thisrock i s continuous with qtz
porph.reported i n Renshaw (1984) a t 1660 Ma i n Wild Horse Canyon.
sample from w of Picuris-Pecos fault.
S. Sangrede
*
U-Pb
Rosilla
San Miguel
Peak Quad
concordia
35'42.25l 105°41.0'
U. o f Kansas
17N 12E
17
1650 r
I n d i a n Creek g r a n i t e
zircon
granite
Santa Fe
3951200 438000
I n d i a n Creek area
paper
d
Santa Fe
Robertson and Condie, 1989 (age reported as pers. comnun., 1984, S . A. Bowring)
1650
#279
S. Sangre de C r i s t a Mtns
COMMENTS: S m a l l p l u t o n exposed along the Pecos R i v e r j u s t
1650
*
**
S. Sangre de C r i s t o Mtns
I n d i a n Creek g r a zn i rt ce o? n
granite
I n d i a n Creek area
Stacey e t al., 1977 ( c i t e d a s
belowconfluence
U-Pb
concordia?
San Miguel
35'42.25l 105'41'
12E17N
17
Santa Fe
3951200 438000
Santa Fe
open-file
L. T. S i l v e r , unpub. data).
w i t h I n d i a n Creek.
R o s i l l a Peak Quad
Cal Tech
d
COMMENTS: Reported as " r e l a t i v e l y undeformed g r a n i t e s w i t h ages o f -1650 m.y."
Terrero.
Piedras
blished
**
U-Pb
Arriba
1650 T
Tusas Mountains
concordia
Tres
granite
unknown area
s i l v e r , L.T.,
1984, o r a l p r e s e n t a t i o n a t
Rio
**
U-Pb
1650 i 5
concordia
ZuniMountains
Zuni unknown unit
zircon
felsic schists
unknown area
S i l v e r , L.T., 1984, o r a l p r e s e n t a t i o n a t
Probably from area
3 mi S of
Quad
Cal Tech
1650
GSA Rocky Mountainsectionmeeting,
COMMENTS: Type l o c a l i t y o f T r e s P i e d r a s G r a n i t e .
#280
#281
Durango, CO.
Exact l o c a t i o n unknokn.
Cibola
Quad
Cal Tech
1650 I_ 5
#282
Y
Y
unpublished
GSA Rocky Mountainsectionmeeting,
Durango, CO
COMMENTS: Location unknown.
1653 *
U-Pb
Becker
Socorro
SW Quad
#283
LosPinosMountains
concordia
M.I.T.
LosPinos g r a n i t e
zircon
1653 T
Y Y
granite
Sepultura
thesisSocorro
Canyon area
d
Shastri, 1993
COMMENTS: Fractionsyielded minimum ages rangingfrom 1630-1653 Ma. Euhedral,honey-colored
tocolorless
zircons.Short,stubbygrainswith
Length:Width=1.5:1.
Previously called Sepultura granite.
1654 1: 23
**
Tusas Mountains
trondhjemite
Brazos
whole-rock
Ria
trondhjemite
AztecRio
areaBrazos
Barker e t al., 1974
COMMENTS: Isochron of
Rb-Sr Lagunitas
Arriba Ria
isochron
106'18'
36'48'
Chama
6 widely separated
4075000 384000
paper
Creek Quad
USGS
1690
24
1654 = 23
87=1.39x10-11/yr
*
#284
Y
Y
d
samples.
1654 z 1
U-Pb
Socorro
Magdalena Quad
Magdalena Mountains
concordia
34'04'34"
107°10'06tm U. o f Kansas
Magdalena
z i r c oGnr a n i t e
3s
3w
5
1
1654
No
granite
3772450 299900
Magdalena
paper
Jordan
Socorro
Canyon area
d
Bowring e t a l . , 1983
COMMENTS: Granite and fine-grained border facies are
undeformed; countryrock(ca.
1664 Ma) i s h i g h l y
deformed.
*
#285
85
**
1655 r
P i c u r i s Mountains
HardingPegmatite
pegmatite
Harding mine area
Brookins e t al., 1985
Rb-Sr
Trampas
model
whole-rock
Taos
Raton
ALL DATA
Taos
36'11.53'
105"47.67'
23N
11E
29
4005425
428600
Quad
UNM and UNC
1655 T
87=1.42~10-11/yr
#286
Kingston Quad
USGS
1655
15
#287
COMMENTS: Fine-grained phase o f pegmatite.
*
15
**
1655
Black Range
P i cS
k eptrtignrgaszniirt ceo n
granophyre
dist.mining
Kingston
paperCruces
Stacey and Hedlund, 1983
COMMENTS:
U-Pb
concordia
Hatch
Las
Sierra
107O42.4'
32'54'18'
16s
8W
18
3644650 246850
*
-/
Includes 2 s e t s o f Pb/Pb and U/Pb ages as w e l l as upper i n t e r c e p t age.
1655 t
ZuniMountains
zircon
metavolcanics
Zuni felsic
felsic schist
abstract
unknown area
Bowring and Condie, 1982
U-Pb
concordia
Cibola
#288
Quad
U. o f Kansas
1655 L
Zuni
Gallup
Y
Y
-/
COMMENTS:
1655 =
Zuni Mountains
Zuni g r a n i t e
granite
unknown area
Bowring and Condie, 1982
U-Pb
concordia
zircon
Zuni
Gal Lup
Cibola
#289
Quad
U. o f Kansas
1655
fo
T
abstract
COMMENTS:
1655 T 3
LosPinosMountains
LosPinos g r a n i t e
granite
Bootleg Canyon area thesis
Shastri, 1993
U-Pb
concordia
zircon
Socorro
Socorro
COMMENTS: Euhedral,honey-colored
*
1656
Manzano
concordia
Mountains
Monte Largo Granodiorite
granodiorite
Monte Largo Can
Socorro
abstract
area
Bauer e t al., 1992
-
Socorro
zircon
Belen
#290
1655 = 3
t oc o l o r l e s sz i r c o n .
U-Pb
Cerro Montoso Quad
M.I.T.
Long, slendergrainswith
Valencia
34'37.5'
106'29.5'
3833000
Y Y
Length:Width=2-5:1.
C a p i l l a Peak Quad
M.I.T.
1656 T
#291
Y
St
363200
COMMENTS: 3 points.
1658 + 12
Los PinosMountains
Bootleg Canyon a p l i t e
aplite dike
Bootleg Canyon area thesis
Shastri, 1993
U-Pb
concordia
zircon
Socorro
Socorro
Socorro
Cerro Montoso Quad
M.I.T.
1658 = 12
#292
-/
COMMENTS: Dike i s o r i e n t e d p a r a l l e l t o
S2, and cuts across older sheared dikes which are parallel to
Zircons havelong,slenderhabit;
Lenght:Width=5:2;
t y p i c a l l yc l e a r and l i g h tp i n k .
f r a c t i o n s .D i k ei sw i t h i nB o o t l e g
Canyon sequence (orSevilletaFormation).
*
3
U-Pb
Socorro
1659
Indian
Well
Wilderness
Chupadera Mountains
U. o f Kansas
concordia
33'47'38" 106°58'49"
Chupadera
z i r c og
nr a n i t e
6s
1W
1659 T 3
granite
Oscura
Mountain
3740850 316600
S. Chupadera area
paper
Tularosa
-/
Bowring e t al., 1983
COMMENTS:
Thisarea was c a l l e d t h e Coyote H i l l s byCondie and Budding(1979).
S1.
Four
Quad
#293
a
86
1660
*
10
S. Sangre de C r i s t o Mtns
Dalton Canyon succession
quartz porphyry
Wild Horse Can
Santa
area
Renshaw, 1984
U-Pb
concordia
zircon
11E
Santa Fe
Fe
Santa Fe
35'40.5'
105Y5.5'
17N
27
3948000 431300
thesis
i s contiguous with q t z porph.reported
Canyon area. Sample from W o f Picuris-Pecos fault.
COMMENTS: This qtz porphyry
*
1660
2
LosPinosMountains
Bootleg Canyon sequence
amphibolite
thesis
Bootleg
Socorro
Canyon area
Shastri, 1993
U-Pb
Cerro
concordia
zircon
Socorro
ALL DATA
#294
McClure Reservoir Quad
U. of Kansas
1660 t 10
Y
Y
d
by Fulp (1982) a t ca. 1650 Ma i n Dalton
Socorro
#295
Montoso Quad
M.I.T.
1660
2
f
Y
Y
4
Four populations were separated; a l l p l o t on rhe same regression line.
taken 30 m f r o m g r a n i t i c d i k e
COMMENTS: Metamorphic zircon.
**
1660 i
LosPinosMountains
Bootleg Canyon sequence
amphibolite
Bootleg Canyonthesis
area
Shastri, 1993
U-Pb
concordia
sphene
Socorro
Socorro
Socorro
#296
Cerro Montoso Quad
M.I.T.
1660
Y
E
Sample
Y
d
COMMENTS: Metamorphic sphene. Two f r a c t i o n s o f sphene y i e l d e d f a i r l y d i s c o r d a n t minimum ages. One f r a c t i o n
p l o t t e d on t h e 1660 Ma z i r c o n r e g r e s s i o n l i n e , t h e o t h e r p l o t s
as a s l i g h t l y d i s c o r d a n t minimum age
o f 1620 Ma. I n t e r p r e t e d as metamorphism a t ca. 1660 Ma.
Sphene
i s l i g h t , coke b o t t l e greenof
100 mesh.
anhedralfragmentslargerthan
schist
1662 & 1
LosMountains
Pinos
concordia
S e v i l l eM
t ae t a r h y o l i t e
felsic
Montosa
rhesis
Socorro
Draw area
Shastri, 1993
U-Pb
Fm
Baldy
#297
Montoso Quad
1662
zircon
Socorro
honey c o l o r ,w i t h
1664 I: 3
Magdalenaconcordia
Mountains
metarhyolite
Baldy
North
zircon
metarhyolite
North
Bowring e t al., 1983
Socorro
M.I.T.
COMMENTS: Sample contained abundant,
p i n kt o
Cerro
.1:
1
Magdalena
Y
d
Long, slenderfragments
o f igneous zircon.
some inclusions. Four points.
U-Pb
Y
Socorro
34'2'52"
107°10'32"
3s
3W
17
3769350 299200
Length/Width=3/1.Clear
#298
Magdalena Quad
U. o f Kansas
1664
3
Y
Y
4
COMMENTS:
schist
1664 T 3
U-Pb
Magdalena Mountains
concordia
Shakespeare Can metarhyolite
zircon
felsic
Magdalena
Shakespeare Can
Socorro
area
Bowring e t al., 1983
Socorro
34°02r54"107°07'52"
3s
3W
14
3769400 303300
paper
#299
Magdalena Quad
U. o f Kansas
1664
*
3
Y
Y
d
COMMENTS:
1666 9
**
Rb-Sr
Tucumcari b a s i n
C iSt ieersv i c e
No. 1 granite
hhole-rock
granite
Conchas Lake
Bar Y dome
Santa
area
Fe
Muehlberger et al., 1966
Callenderetal.,
1976
COMMENTS:
Guadalupe
35'10'
104°41.8'
11N 21E
22
3891400 527600
paper
Bar Y Ranch Quad
U. o f TX, A u s t i n
1610 T
1666 *
Y
87=1.47x10-11/yr
S eCrivt i ec se
No. 1 Driggers
#300
ton
87
**
1668 I
P i c u r i s Mountains
OrtegaFormation
quartzite
P i l a r area thesis
Maxon, 1976
Pb-Pb
model 2071206
zircon
Taos
Raton
ALL DATA
Taos
Quad
36'15.23'
105"48.82'
23N
11E 6
4012200 426900
Carson
Florida
State
1668
238=1.54x10-10
*
4
#301
Y Y
235=9.72x10-10
COMMENTS: D e t r i t a l z i r c o n p o p u l a t i o n s .
area
**
Rb-Sr
1673 i 41
isochron
Picuris Mountains
whole-rock
Monzonite
Rana Quartz
Taos
quartz monzonite
mine Harding
Long, 1974
Long, 1976
COMMENTS: Data reinterpreted from Fullager
U-Pb
Trampas
1674 f 5
P i c u r i s Mountains
concordia
Rana Quartz
Monzonite
zircon
monzonite
quartz
Taos
Raton
areamine
Harding
Bell, 1985
B e l l and Nielson, 1985
COMMENTS: Lower i n t e r c e p t a t 64 f 14 Ma.
Taos
Trampas Quad
1673
#302
41
Y
and Shiver, 1973. Isochronof 4 samples.
Taos
36'11'
105'47.75'
11E 23N
32
4004400 428450
thesis
#303
Quad
U. of TX, D a l l a s
1674 T 5
Y
Taos
Ritos
36'9.5'
105'35.5'
13E 22N
7
4001500 446500
COMMENTS: P r e l i m i n a r y age. P r o t o l i t h o f r o c k i s u n c e r t a i n ;
fo
4
1678
U-Pb
Taos
Cerro Quad
Taos Range
concordia
36'49.75'
105'31.95'
U. o f Kansas
J a r a c i t o Canyon g r a n o d izoirrict o
en
15 13E30N
1678 T
Wheeler Peak
4075850
452500
granodiorite
abstract
Urraca
Raton
Ranch area
4
Bowring e t al., 1984
Reed, 1984
Lipnan and Reed, 1989
COMMENTS: Along L a t i r Creek, 1.4 km E of gaging station. Uncertainty
4 0 Ma.
1680
U-Pb
P i c u r i s Mountains
concordia
Rio Pueblo Schist
zircon
feldspathic schist
Taos
ComalesCampground
unpublished
Raton
Bauer and Bowring, 1989, unpublisheddata
Y
W04
Y
Tres
Quad
Washington univ.
1680 I
St
#305
Y
Y
4
may be f e l s i c v o l c a n i c o r p l u t o n i c .
*
**
U-Pb
Capilla
Torrance
Peak Quad
1680
Manzano Mountains
U. o f Kansas
concordia
3L041.0'
106"24'
Fm
zircon
Y Y
S e v i l l eM
t ae t a r h y o l i t e
3839000 371000
B e l e nfseclhdisspt a t h i c
S. o f C a p i l l a paper
Peak
Socorro
4
Bowring e t al., 1983 (reported by Bowring and Condie, unpublisheddata).
McKee and Condie, 1986
COMMENTS: Poorly constrained age.Sample
taken from outcrop on road t o C a p i l l a Peak f r o m S e v i l l e t a
metarhyolite of Reiche(1949).Approximate
location.
1684 i 1
U-Pb
concordia
P i c u r i s Mountains
Puntiagudo
Granite
Porphyry
zircon
granite
Taos
Raton
areamine
Harding
B e l l , 1985
B e l l and Nielsen, 1985
COMMENTS: Lower i n t e r c e p t a t 48 IC 2 Ma.
**
1688 f 33
Tusas Mountains
Rio Brazos trondhjemite
whole-rock
trondhjemite & hornblendite
Rio Brazosarea
Barkeret al., 1974
COMMENTS:
Rh-Sr
isochron
Chama
Aztec
Taos
36O12.07'
105O49.42'
25 10E
23N
4006400 425950
thesis
4
Rio Arriba
106'18'
36'48'
USGS
4075000
paper
Isochron o f 6 samples p l u s 2 hornblendites.
384000
Trampas Quad
U. o f TX, D a l l a s
1684 z 1
#307
Y
fo
Lagunitas Creek Quad
1724 r 34
1688
87=1.39x10-11/yr
4
#306
.L
33
#308
Y
Y
88
Canyon
paper
#309
Arroyo Seco Quad
Taos
1689
U-Pb
36'32.53'
105'33.45'
U. o f Kansas
concordia
Taos Range
13E
27N 1689
28
i
Y fa
Hondo
Canyon
g r a n o d i o r iztier c o n
granodiorite
Wheeler Peak
4044050 450100
Hondo
Raton
area
4
Reed, 1984
Lipnan and Reed, 1989
COMMENTS: From small, unmapped g r a n o d i o r i t e body i n amphibolite along road
i n HondoCanyon. May becoeval
w i t h J a r a c i t o Canyhon g r a n o d i o r i t e (1678 Ma).Age
i s from S.A. Bowring, 1984, unpublisheddata.
1691
i
S. Sangre de C r i s t o Mtns
U-Pb
concordia
Mora
35O54.6'
105O42.0'
#310
Truchas Peaks Quad
Washington
Univ.
1691 t
Pecos Baldyquartzporphyryzircon
porphyry
qtz-feld
Santa Fe
3974000 437000
Pecos Baldy area
Santa Fe
paper
4
S. A. Bowring, 19%).
Grambling e t al., 1988 ( c i t e d as pers.corn.,
Grambling and Williams, 1985
COMMENTS: Poorly exposed Hando Group rocks appear t o be intruded by this felsic porphyry stock.
**
1692 r 2
Ar-Ar
plateau
Cimarron Range
Clear Creek quartz-diorite
hornblende
Wheeler Peak
quartz-diorite
W. of Palisades
paper area
Raton
Grambling and Dallmeyer, i n press, JMG
Colfax
36O32.25'
4043100
U. o f Georgia
1692
4
Cimarron River granitic pluton. Cimarron River tectonic
c o r r e l a t i o n age = 167814 Ma. Total-gas Age = 1668x3 Ma.
1699 +
U-Pb
concordia
TaosRange
zircon
Mtn qtz
Fraziermonzonite
Wheeler Peak
quartz monzonite
abstract
Wheeler
RatonPeak area
Bowring e t al., 1984
Reed, 1984
COMMENTS: E f o r k of Red R i v e r . L i m a n and Reed
Mike Peak. Uncertaintv ;IO Ma.
**
U-Pb
1700 T
P i c u r i s Mountains
concordia
zircon
Glenwoody Formation
Taos
metarhyolite
unpublished
Raton
P i l a r c l i f f s area
S i l v e r , L.T., 1984. o r a l p r e s e n t a t i o n a t
Taos
36O36.6'
105'23'
27N 1699
15E
6
4051450 465750
COMMENTS:
unit. Isotope
#312
Wheeler Peak Quad
o f Kansas
u.
Y
T
Y
4
Lipnan and Reed, 1989
(1989) correlated this rock with the quartz monzonite of Old
Taos
Carson Quad
Cat
1700
Tech
*
GSA Rocky Mountainsection meeting,
COMMENTS: Reported as p r e l i m i n a r y age. Exact location
*
#311
Touch-Me-Not Mtn Quad
105"10.2'
2
485000
COMMENTS: From 140 m E o f contact with
1700
**
U-Pb
P i c u r i s Mountains
Cal
concordia
zircon Monzonite
Rana Quartz
Taos
quartz monzonite
published Raton unknown area
S i l v e r , L.T., 1984, o r a l p r e s e n t a t i o n a t
lished
Aztec
ALL DATA
Taos
#313
Y
Y
Ourango, CO.
unknown.
Trampas Quad
Tech
1700 i
#314
Y
Y
4
GSA Rocky Mountainsection meeting, Durango, CO.
Location unknown.
**
U-Pb
1700 i
concordia
Picuris Mountains
Puntiagudo
Granite
Porphyry
zircon
Taos
grani re
unpublished
Raton
unknown area
S i l v e r , L. 1.. 1984, o r a l p r e s e n t a t i o n a t
COMMENTS: Location unknown.
**
Taos
#315
Trampas Quad
C a l Tech
1700 =
Y
Y
4
GSA Rocky Mountainsectionmeeting,
Durango, CO.
1700
U-Pb A r r i b a
Rio
Carion Plaza Quad
Tusas Mountains concordia
36'34.33'
106'9.0'
Cal Tech
zircon
27N
7E
14
1700 3
Y Y
Burned Mtn Formation
4047900 396900
metarhyolite
Chama
areaMountain
Burned
4
S i l v e r , L.T.,
1984. o r a l p r e s e n t a t i o n a t GSA Rocky Mountainsectionmeeting,
Durango, CO.
COMMENTS: Exact location unknown. Barker and Friedman (1974) o r i g i n a l l y r e p o r t e d a 1750-1800 Ma age f o r
BurnedMountainFormationfrom
L. T. S i l v e r , 1974, o r a l comnunication.
#316
89
ALL DATA
**
1700 r
U-Pb A r r i b a
Rio
#317
Quad
Caiion Plaza
concordia
Cal Tech
Tusas Mountains
27N
1700 I
?
z i7E
rcon
Burned
Formation
Mtn
fsecl d
h si spta t h i c
chama
Canada d e l Os0
unpublished
area
Aztec
S i l v e r , L. 1.. 1984. o r a l p r e s e n t a t i o n a t
GSA Rocky Mountainsectionmeeting,
Durango, CO.
COMMENTS: Exact location
unknown, butprobablyrepresentsVadito
Y
Y
Group metarhyolite, perhapsBurnedMountain
Formation.
*
**
1700
5
U-Pb Nacimiento
or
Gallina
Arriba
Rio
Cal Tech
San PedroMountains
concordia
z iZuni
r c o nunknown u n i t
1700
5
metarhyolite,granite
Abiquiu
unpublished
Aztec
San Pedro Peaks
area
S i l v e r , L.T.,
1984, o r a l p r e s e n t a t i o n a t
GSA Rocky Mountainsection meeting, Durango, CO.
COMMENTS: Location unknown. Includesgranites
Raton
**
1708 =
P i c u r i s Mountains
Glenwoodywhole-rock
Formation
metarhyolite
P i l a r area
Brookinsetal.,
1985
Rb-sr
model
Taos
Peak Quad
W18
and metarhyolites.
Taos
Quad
36'15.95'
105'47.23'
11E
24N
32
4013550 429300
Carson
UNM and UNC
1708 r
87=1.42x10-11/yr
#319
Y
Y
4
COMMENTS:
**
1710 i
S. Sangre de C r i s t o Mtns
Pecos
galena
orebody
mine
s c h i sf et l s i c
Pecos minearea
Stacey e t al., 1977
COMMENTS:
Pb-Pb
San Miguel
model 2D7/206
105'40'
35O46'
22 12E 18N
3958500 439500
Santa Fe
Santa Fe
paper
Cowles Quad
USGS
#320
*
Y
1710
238=15.5~10-11
235=98.5~10-11
Isochron model ages a r e computed fromthe model o f Stacey and Kramers (1975).
"Terrero"byStacey
e t al., 1977.
Thisrock
Y
was c a l l e d
**
Pb-Pb
Taos
Arroyo Seco Quad
#321
1713 r
model 2071206
36'37'27" 105°34'12" USGS
Taos Range
san
zq
i rC
uc raoirn
sttzoi b
t ea l
13E
28N
32
1713 i
Y Y
quartzite
4053150
Wheeler Peak
449000
san C r i sabstract
t a b aRaton
l Can area
4
A l e i n i k o f f e t al., 1985
Lipnan and Reed, 1989 ( l o c a t i o n s )
COMMENTS: D e t r i t a l z i r c o n p o p u l a t i o n #2. L i g h t p i n k and euhedral. Interpretation = age o f v o l c a n i c l a s t i c
input during sedimentation.
San
Rosilla
Miguel
Peak Quad
35'42'
105'41.25'
U. o f Kansas
Windy B r i d g e t o n a l i t e
20 12E17N
1718 = 5
tonalite
3950000 437700
Macho
Santa
Creek area
Fe
paper
4
Robertson and Condie, 1989 (age reported as Bowring and Condie, 1982 and S. A. Bowring,pers.
Bowring and Condie, 1982
COMMENTS: On Pecos River, 2 km N o f mouth o f Macho Creek.
1718
I
5
S. Sangre de C r i s t a Mtns
1720
i
15
S. Sangre de C r i s t a Mtns
U-Pb
concordia
zircon
Santa Fe
Santa Fe
Jones r h y o l i t e complex
11E
quartz-eye porphyry
.
Jones mine area
Bowring and Condie, 1982
Robertson and Condie, 1989 (age reported as f r
COMMENTS: Near Jones mine.
~~
#322
U-Pb
concordia
zircon
Santa Fe
Santa Fe
35'44.00
IOS"43.75
17N
1
3954100 434000
paper
Rosi lLa Peak Quad
U. o f Kansas
1720
X
*
15
comnun.,
1987)
#323
90
ALL DATA
U-Pb
Taos
1720 i
TaosRange
concordia
105'19'
36'50'
Comanche P o i nfte l ds. c h i szt i r c o n
feldspathic schist
Wheeler Peak
4077000 472000
unpublished
Raton
Comanche
area Point
Grambling and Bowring, 1988. unpublisheddata.
Comanche Point Quad
Washington Univ.
1720 I
#324
Y
Y
d
COMMENTS: Sample i s f r o m m e t a r h y o l i t e t h a t s i t s s t r u c t u r a l l y
Group equivalent? Mapped by Moench e t a l . ,
by M. Williams and P. Bauer.
1720
**
T
S. Sangrede
C r i s t o Mtns
Tres Lagunas metavolcanics
galena
metavolcanic
felsic
Tres Santa
Lagunas area
Stacey e t al., 1977
beneathcrossbedded q u a r t z i t e . Maybe Vadito
1988 as "Xgq?".Sample
was processed a t Washington univ.
Pb-Pb
Rosilla
Miguelsan
model 2071206 105'41'
35'43'
17N 12E 8
3952750 438000
paper
Santa Fe
Fe
Peak Quad
USGS
1720 L
Y Y
238=15.5x10-11 235=98.5~10-11
d
COMMENTS: Isochron model ages a r e computed fromrhe
Stacey e t al.;
may be p a r t o f
1720 i 5
U-Pb
concordia
Shiprock
zircon
Shiprock xenoliths
gneiss,schist,granite
unpublished
Shiprock
unknown area
S i l v e r , L.T.,
1984, o r a l p r e s e n t a t i o n a t
model o f Stacey and Kramers(1975).
Jones r h y o l i t e complex.
San Juan
#325
Called "Jones" by
Quad
Cal Tech
1720
5
#326
Y
Y
4
GSA Rocky Mountainsection meeting,
Durango, CO.
COMMENTS: Location unknown.
**
1727
P i c u r i s Mountains
OrtegaFormation
quartzite
P i l a r area
Maxon, 1976
*
#327
Pb-Pb
model 207/206
zircon
11E
Taos
Raton
Taos
Quad
36O16'
105°47.65'
24N
32
4013450 428700
thesis
Carson
Florida
State
1727 x
238=1.54x10-10
Y Y
235=9.72x10-10
d
COMMENTS: D e t r i t a l z i r c o n p o p u l a t i o n s .
1730
110
**
Truchas
C r i s t o Mtns
Vadito Group amphibolite
amphibolite
Truchas Peak
Santaarea
Ward, 1990
Ward, 1986
T
S. Sangrede
Rb-Sr
isochron
whole-rock
Santa Fe
Fe
Peak Quad
Mora
12E2ON
paper
14.1
UNM
1730
T
110
#328
Y
Y
d
COMMENTS:
er
Cruces Las
#329
Bennett Mountain Quad
1730 i 130 **
U-Pb
Doiia Ana
san Andres Mountains
concordia
32'36'04"
106"27'57"
U. o f TX, D a l l a s
L i t t l e San Nicolas
gneiss
zircon
205
5E
6
1730 i 130
Y Y
3607260 362500
Whiteg t gneiss
Sands
area
Mountain
Bennert
4
. .
Roths, 1991
COMMENTS: Zircons w e metamict and highly discordant.
Sm-Nd whole-rock o f same sample has model age o f 1810
Ma.
*
area
1730
U-Pb
Taos
Quad
Questa
RangeTaos
concordia
105°34.75'
36O39.63'
U. o f Kansas
13E 28N
Columbine Ck qtz
monzonite
zircon
17
1730 T
quartz monzonite
Wheeler Peak
4057200 448250
Questa
d
Bowring e t a l . ,
1984
Reed, 1984
Lipman and Reed, 1989
COMMENTS: 5.2
km
S16'E
o f Questa. Uncertainty 4 0 Ma.
Nacimiento Peak Quad
**
U-Pb
1730 .t 20
Rio Arriba
Cal Tech
SanMountains
Pedro
concordia
San Pedro quartz
monzonite
zircon
20
1E
21N
1730
quartz monzonite
Abiquiu
unknown area
Aztec
unpublished
Woodward, 1987 c i t e d as L. 1. Silver,personal
comnunicacion, 1972.
COMMENTS: Location unknown, but probably from Nacimiento
Peak area.
*
-
#330
Y
gn
#331
Y
sh
91
**
1739 d
P i c u r i s Mountains
Vadito Groupwhole-rock
schist
felsic schist
Hardingminearea
paper
Brookinsetal.,
1985
Rb-Sr
model
ALL DATA
Taos
36O11.33'
105'47.17'
11E
23N
32
4004975
429325
Taw
Raton
#332
TrampasQuad
UNM and UNC
1739
87=1.42x10-11/vr
*
Y
Y
4
COMMENTS:
*
paper
U-Pb Red
1741
concordia
Taos Range
z i r c o29
n
14E
Gold Hill m e t a d i o r i t e
metadiorite
Wheeler Peak
Gold
Raton
Hill area
Bowring e t al., 1984
Reed, 1984
COMMENTS: Sill W of Gold Hill. Lipman and Reed
4 0 Ma.
Taos
36'38.15'
105'28.1'
28N
4054350 458200
1741
am Y
r
4
Lipman and Reed, 1989
locations)
(contains
(1989)--"
interpreted as the emplacement age."
...
U-Pb Red
Taos
River Quad
1750 3
concordia
36O36.1'
105'24.65'
U. o f Kansas
Tam Range
z i r c o n 14E
27N
2
1750 *
Red R i v e r t o n a l i t e
dpi lourti ot incs
Wheeler Peak
4050550 463250
4
abstract
Wheeler
Raton
Peak area
Bowring and Condie, 1982
Reed, 1984
Lipman and Reed, 1989
COMMENTS: Reported as t o n a l i t e i n Reed, 1984. NE of Frazier Mtn, alongroad to Middle Fork
4 0 Ma.
**
U-Pb
1755 2
Cal
concordia
Tusas Mountains
zircon
OrtegaFormation
quartzite
unknown area
S i l v e r , L. T., 1984, o r a l p r e s e n t a t i o n a t
COMMENTS: A
l detrital fractions yielded
1755 r
Tusas
concordia
Mountains
Granodiorite Maquinita
granodiorite
Aztec
area?
Burned Mtn
S i l v e r , L.T.,1984,
COMMENTS:
Rio Arriba
ages lessthan
**
Y
fo
Lake. Uncertainty
Y
Y
Durango, CO.
Quad
Cal Tech
1755
unpublished
#336
Y
Y
4
GSA Rocky Mountainsectionmeeting,
Pb-Pb
model 2071206
zircon
11E
Taos
Raton
#334
#335
*
Chama
oralpresentationat
Uncertainty
1755 Ma. Locations unknown.
Rio
Location unknown. I n t r u s i v e i n t o M o m i n
1765 t
P i c u r i s Mountains
OrtegaFormation
quartzite
P i l a r area
Maxon, 1976
Quad
Tech
1755 1:
unpublished
GSA Rocky Mountainsectionmeeting,
U-Pb
Arriba
#333
River Quad
U. o f Kansas
Durango, CO.
ComDlex.
Taos
Quad
36'16'
105°47.65'
24N
32
4013450 428700
thesis
Carson
Florida
State
1765 I
1765 d
Y Y
238=1.54x10-10 235=9.72x10-10
#337
4
COMMENTS: D e t r i t a l z i r c o n DoDulations.
Range
Red
Taos
River Quad
#33a
1765 T
U-Pb
U. o f Kansas
36O39.0'
105O26.23'
Taos
concordia
Y Y
z i r c o22
n
14E
28N
1765 3
Gold Hill Complex
Wheeler Peak
4055950 460900
felsic metavolcanics
Gold Hill area
unpublished
Raton
4
Bowring, S. A., 1992, personalcomunication
Bowring e t al., 1984
Lipman and Reed, 1989
COMMENTS: NE o f Gold Hill. Called"layeredgneiss
sequence" i n Reed (1984). I n Bowring e t a t . (1984) and Reed
(1984) t h i s rock was reDorted t o havea Dreliminarv age of 1750 Ma. Uncertainty less than
10 Ma.
92
**
1769
P i c u r i s Mountains
OrtegaFormation
quartzite
P i l a r area
Maxon, 1976
*
Pb-Pb
model 207/206
z i r c o n11E
Taos
Raton
ALL DATA
Taos
Quad
36O15.23'
105°48.82'
23N
6
4012200 426900
thesis
Carson
Florida
State
1769 I
238=1.54x10-10
#339
Y Y
235=9.72~10-10
d
COMMENTS: D e t r i t a l z i r c o n o o o u l a t i o n s .
*
**
Pb-Pb
Taos
Arroyo Seco Quad
1775
Tam Range
model 207/206
36"37'27" 105'34'12"
USGS
Y Y
San C r i s t o b a l q u a r t z i t e
z i r c o n13E
28N
32
1775
Wheeler Peak
54053150
449000
quartzite
Raton
4
San C r i s t o b aabstract
l Can area
A l e i n i k o f fe t
at., 1985
Lipman and Reed, 1989 (sample locations)
COMMENTS: D e t r i t a l z i r c o n p o p u l a t i o n # I .
Dark p i n k and round. I n t e r p r e t a t i o n = age of source terrane for
auartzose sediments.
#340
*
**
U-Pb
1780
concordia
P i c u r i s Mountains
zircon
Formation
Ortega
Taos
quartzite
unpublished
Raton
P i l a r c l i f f s area
S i l v e r , L. T., 1984, o r a l p r e s e n t a t i o n a t
COMMENTS: Exact location
*
Raton
1793
21
**
Picuris Mountains
Formation
Ortega
zircon
quartzite
P i l a r area
Maxon, 1976
#341
Carson Quad
Cal Tech
1780
Taos
*
Y
Y
d
GSA Rocky Mountain section meeting, Durango, CO.
unknown. Reported ages between 1780-1750 Ma f o r d e t r i t a l z i r c o n p o p u l a t i o n s .
U-Pb
concordia
11E
Taos
36°15.5"
23N
105"48'
Taos
Carson Quad
Florida
State
1830 .e 21
1793 I 21
Y
238=1.54xID-10
235.9.72~10-10
#342
Y
d
COMMENTS: Upper i n t e r c e p t age i s from 4 d e t r i t a l samples from 2 l o c a l i t i e s . A l s o r e p o r t s
207/206,
207/235,
206/238 ages f o r each o f 4 samples.
**
1800 i 50
Rb-Sr
Nacimiento
Arriba
Rio
Nacimiento
San Pedro metavolcanics
whole-rock
quartzlatite
Abiquiu
N. NacirnientoMtns
Aztec
paper
Brookins, 1974a
(fromBrookins and McLelland, unpub.)
-
Peak o r Regina Quad
UNMMountains
1800 I50
Y Y
#343
d
COMMENTS: Preliminary age o f 6 samples. Location unknown.
*
1830
170
**
SandovalRb-Sr
Jemez Mountains isochron
whole-rock
GT-1 amphibolite
granite-veined
amphibolite
Los Alamos
Fenton
Albuquerque
abstract
Hill area
Brookins and Laughlin, 1976
COMMENTS:
Isochronof
Seven Springs Quad
35'54.1'
106'40.5'
19N
2E
1
3974050 348850
UNM
1830
(LANL)
*
170
94344
Y Y
GR-1
10 samples. Approximate location.
**
Rb-Sr
ArribaRio
1840 2 170
isochron
Nacimiento Mountains
San Pedro Leucogranodiorite
whole-rock
gneissic
granodiorite
Abiquiu
N. Nacimiento MTnS
Aztec
paper
(fromBrookins and McLelland, unpub.)
Brookins, 1974a
-
ReginaQuad
UNM
1840
170
e45
Y
Y
d
COMMENTS: Isochron of 4 samples. Location unknown.
**
area
1890 r 100
Kilbourne Hole
Kilbourne
Hole
xenolith
whole-rock
gneiss,
gt
& charnockite
gra
Hole
Kilbourne
A b i t z e t al., 1987
COMMENTS:
Rb-Sr
isochron
EL Paso
EL Paso
Isochron of 4 samples.
Doiia Ana
31'58.29'
106'57.75'
1W
8
27s
3538750 31L600
paper
Hole
Kilbourne
Quad
UNM
1890
100
87=1.42x10-11/yr
*
4
#346
Y
Y
a
93
mine
*x
1899 L
P i c u r i s Mountains
Harding Pegmatite
pegmatite
cleavelandite-qtz
Harding
B a l e s t r i and Brookins, 1985
Rb-Sr
model
cleavelandite
Taos
Taos
36'11.53'
105'47.67'
23N
11E
29
428000
4005425
COMMENTS: This age i s anomalouslyold,authors
1970s.
do not discuss.
1920 T 180
**
Jemez Mountains
GT-1
whole-rock
amphibolite
amphibolite
Fenton Hill area
Brookins and Laughlin, 1983
Rb-Sr
isochron
Los Alamos
Albuquerque
paper
COMMENTS: These datasupersedeBrookins
criteria.
1990 T 260
**
Kilbourne Hole
Kilbourne Hole xenolith
g t 8. charnockite
granulite
Kilbourne Hole area
A b i t ze ta l . ,
1987
COMMENTS:
ALL DATA
4
Sandoval
35O54.07'
106'40.5'
1
2E 19N
3974050 348850
Samples were c o l l e c t e d and analyzed i n l a t e
Seven Springs Quad
UNM
1920 i 180
87=1.42x10-ll/yr
and Laughlin, 1976. 8 samplesanalyzed
Rb-Sr Ana
isochron
whole-rock
27s
E l Paso
E l Paso
n347
Trampas Quad
UNM
1899 i
87-1.42x10-111yr
#348
Y
Y
do n o t fulfill whole-rock
Doiia
31'58.29'
106'57.75'
1W
8
3538750 314600
paper
HoleKilbourne
Quad
UNM
1990 i 260
87=1.42x10-11/yr
Doiia Ana
31'58.29'
106'57.75'
8
275
1W
3538750 314600
paper
Hole
Kilbourne
Quad
UNM
2040
190
87.1.42
x 10-Illy
#349
Y Y
4
Isochron o f 3 samples
**
2040
190
Kilbourne Hole
Kilbourne
Hole
xenolith
khole-rock
f e l gneiss,charnockitegran
Kilbourne Hole area
Abitzetal.,
1987
Rb-Sr
isochron
EL Paso
E l Paso
COMMENTS: Isochron o f 5 samples.
*
4
#350
Y Y
94
PART III
List of isotopic age determinations by mountain range
MOUNTAIN RANGE
AGE
(**)
METHOD
MATERIAL
** = significance of age is uncemin
UNIT NAME
ROCKTYPE
RECORD #
95
MOUNTAIN RANGE
Big Burro Mountains
950 d
1270 z
1380 r 45
1410 i 50
1410 t 50
1437 I_
1437 *
1444
1445 + 15
1500
1505 r
1542 t
1550 i
1550
1567
*
*
*
*
**
**
**
**
**
**
**
**
**
**
**
**
**
**
K-Ar
Rb-Sr
K-Ar
K-Ar
K-Ar
Pb-Pb
Pb-Pb
Pb-Pb
U-Pb
U-Pb
Pb-Pb
Pb-Pb
K-Ar
U-Pb
Pb-Pb
biotite
biotite
biotite
biotite
biotite
zircon
zircon
z i rcon
zircon
zircon
zircon
zircon
biotite
zircon
zircon
Hombrook Mtn g r a n i t e
Burro Mtn g r a n i t e
Burro Mtn granodiorite
B u l l a r d Peak Series
B u l l a r d Peak Series
Burro Mtn g r a n i t e
Burro Mtn g r a n i t e
Burro Mtn g r a n i t e
Burro Mtn g r a n i t e
Burro Mtn diabase
Burro Mtn diabase
B u l l a r d Peak Series
Burro Mtn g r a n i t e
B u l l a r d Peak Series
B u l l a r d Peak Series
**
Pb-Pb
Pb-Pb
U-Pb
zircon
zircon
zircon
Pickett
Springs
granite
granophyre
Pickett
Springs
granite
granophyre
Pickett
Springs
granite
granophyre
granite
gneissic granite
granodiorite
s i l l - g t gneiss
gneiss
granite
granite
granite
granite
diabase dike
diabase dike
s i l l - g t gneiss
granite
s i l l - g t gneiss
s i l l - g t gneiss
& granite
# 8
# 41
# I 19
#141
#142
#162
#163
# I 75
# I 76
#221
#225
#235
#239
#240
#245
Black Range
1608 t
1647 r
1655 9 15
**
**
#256
#276
#287
Caballo Mountains
1304
**
i
Rb-Sr
whole-rock
Caballo
Granite
# 56
g r a ng int e i s s i c
Chupadera Mountains
1659
x
3
U-Pb
#293
zircon
Chupadera
g r a n i t eg r a n i t e
Rb-Sr
Ar-Ar
muscovite
muscovite
muscovite
hornblende
hornblende
monazite
zircon
whole-rock
whole-rock
hornblende
Tolby Meadow t e c t o n i c u n i t
Eagle Nest tectonic unit
Cimarron River tectonic unit
EagleNest t e c t o n i c u n i t
EagleNest t e c t o n i c u n i t
EagleNest t e c t o n i c u n i t
EagleNest t e c t o n i c u n i t
EagleNest f e l s i c gneiss
EagleNest g r a n i t e
Clear Creek q u a r t z - d i o r i t e
Rb-Sr
Rb-Sr
Rb-Sr
Rb-Sr
Rb-Sr
Rb-Sr
biotite
K-feldspar
whole-rock
biotite
whole-rock
feldspar
o r a n i t i c oneiss
Continental No. I-E oneiss
socony Mobil
95 g r a n i t e
granite porphyry
Stanolind No. 11-X g r a n i t e
granite
Humble No. 1 Huapache g r a n i t eb i o t i t eg r a n i t e
Socony Mobil No. 95 g r a n i t e
granite porphyry
Humble No. 1 Huapache g r a n i t eb i o t i t eg r a n i t e
whole-rock
whole-rock
whole-rock
whole-rock
whole-rock
whole-rock
whole-rock
whole-rock
whole-rock
zircon
zircon
zircon
zircon
South Peak a l k a l i g r a n i t e
South Peak a l k a l i g r a n i t e
South Peak a l k a l i g r a n i t e
South Peak a l k a l i g r a n i t e
South Peak a l k a l i g r a n i t e
South Peak a l k a l i g r a n i t e
South Peak a l k a l i g r a n i t e
South Peak a l k a l i g r a n i t e
F l o r i d a Mtns g r a n i t e
Florida gneiss
Florida gneiss
Florida gneiss
Florida gneiss
Cimarron Range
1258 i 1
1268 t 1
1350
1
1394 t a
1401
2
1430 r
1430 i
1467 L 35
1488 3 42
1692 3 2
*
*
** A r - A r
** A r - A r
** A r - A r
** A r - A r
** A T - A r
**
**
**
U-Pb
U-Pb
Rb-sr
quartzire
gneissic quartzite
metarhyolite
amphibolite
amphibolite
gt-plag gneiss
gt-plaggneiss
g r a n i t i c gneiss
granite
quartz-diorite
# 37
# 40
# 98
# I 26
#133
#159
#160
#196
#211
#311
Delaware basin
*
1139
1201 i
1211 i
1356
20
1397
1397
30
*
*
*
**
**
**
**
**
**
no.
~~~
-
-
F l o r i d a Mountains
626 i
685 t
685 d
852 =
1038 T
1214 X
1292 i
1439 t
1530 d 120
1554
1556 .L
1570
1610 2
*
**
**
**
**
**
**
**
Rb-Sr
Rb-Sr
Rb-Sr
Rb-Sr
Rb-Sr
Rb-Sr
Rb-Sr
** Rb-Sr
**
**
**
**
**
Rb-Sr
Pb-Pb
Pb-Pb
Pb-Pb
U-Pb
quartz syenite
alkaligranite
alkaligranite
alkaligranite
alkaligranite
alkaligranite
alkaligranite
a l k a l ig r a n i t e
qtz monzonite-granodiorite
g r a n i t i c gneiss
g r a n i t i c gneiss
g r a n i t i c gneiss
g r a n i t i c gneiss
# 19
# 28
# 29
#101
# I 28
#130
# I
# 3
# 4
# 7
# 15
# 30
# 50
#166
#233
#241
#242
#248
#257
Great Plains Province
1358
=
**
K-Ar S eCrbivtiiocetesi t e
No. 1ggr a
r anni ti et e
#102.
96
MOUNTAIN RANGE
Jemez Mountains
1440 = 30
1465 T 30
1500 f 120
1500
25
1518 t 210
1520
210
1550 f 130
1583
220
1620 T 40
1830 T 170
1920 I 180
*
*
*
**
**
**
**
**
**
**
**
**
**
**
Rb-Sr
Pb-Pb
Rb-Sr
Pb-Pb
Pb-Pb
Pb-Pb
Rb-Sr
Pb-Pb
Rb-Sr
Rb-Sr
Rb-Sr
whole-rock
zircon
whole-rock
sphene
epidote
epidote
whole-rock
epidote
whole-rock
whole-rock
whole-rock
GT-2,
GT-2
GT-2
GT-2
GT-2
GT-2
EE-2
GT-2
GT-2
EE-1, EE-2 dikes
dikes
monzogranite
granodiorite
granodiorite
and EE-2 g r a n o d i o r i t e g r a n o dbi oi or ti ti tee
granodiorite
granodiorite
granodiorite
granodiorite
granodiorite
granodiorite
monzogranite gneiss
monzogranite
granodiorite
granodiorite
monzogranitic gneiss
and EE-1 monzogranite
G T - I amphibolite
granite-veined
amphibolite
amphibolite
G T - I amphibolite
Pb-Pb
Rb-Sr
Rb-Sr
Rh-Sr
zircon
whole-rock
whole-rock
whole-rock
Kilbourne Hole xenolith
Kilbourne Hole xenolith
Kilbourne Hole xenolith
Kilbourne Hale xenolith
#i69
#i94
#220
#222
#228
#230
#236
#250
#260
#344
#348
Kilbourne Hole
*
1375
1890 I: 100
1990 * 260
2040 r 190
**
**
**
**
gxreannoullig
ittthe
gneiss, g t 8 c h a r n o c k i t e g r a n u l i t e
g t & charnockite granulite
f e l gneiss,charnockitegranulite
#115
#346
#349
#350
Ladron Mountains
986 t 29 ** Rb-Sr
monzonite
quartz
whole-rock
Granite
Capirote
56
Rb-Sr whole-rock
Ladron
metavolcanic
1143
gran
Ladron
ite
Granite
1291 T 51 ** Rb-Sr whole-rock
Las Vegas b a s i n
1328
*
**
*
**
K-Ar
muscovite
# 12
sequence
f e l s i cs c h i s t
& amphibolite
# 20
# 49
# 76
Shamrock No. 1 McArthur ggr raanni ti e
te
Lemitar Mountains
granite
g
1 r6a~n iat e 3 L e m iU-Pb
tar
zircon
#277
LosPinosMountains
*
*
**
**
*
*
*
*
**
104
1350
1380
29
1400 T 59
1450 3
1480
52
1559
1601
239
1625
49
1653 T
1655 I: 3
1658 r 12
1660 t 2
1660 i
1662 f 1
**
**
**
**
**
**
Rb-Srgranite
whole-rock
granite
Sepultura
Los Pinos granite
Rb-srwhole-rock
sepultura granite
Rb-Sr whole-rock
U-Pb
apatite
Bootleg Canyon sequence
gneiss
Rb-Sr whole-rock
Los Pinos granite
Rb-Sr whole-rock
Sevilleta
Metarhyolite
Fm
Rb-Sr whole-rock
LosPinos g r a n i t e
S e v i l l e t a M e t a r h y o l i t e Fm
Rb-Sr whole-rock
LOS
granite
U-Pb Pinos
zircon
r en i t e
U-Pb
zircon
LosPinos g r a
U-Pb
zircon
Bootleg
Canyon a d
p il ki tee
Bootleg Canyon sequence
U-Pb
zircon
Bootleg Canyon sequence
U-Pb
sphene
U-Pb
zircon
seville
Mteat a r h y o l i t e
Fm
# 96
granite
granite
amphibolite
granite
metarhyolite
granite
metarhyolite
granite
gram
aplite
amphibolite
amphibolite
f e l s ci ch i s t
.
#116
#131
#180
#206
#243
#254
#264
#za3
#290
#292
#295
#296
#297
Magdalena Mountains
*
*
*
*
1247
62
1327
136
1420
117
1485
234
1654 + I
1664 = 3
1664 I: 3
**
Rb-Sr
**
**
Rb-Srwhole-rock
Rb-Srwhole-rock
U-Pb
zircon
U-Pb
zircon
U-Pb
zircon
whole-rock
**whole-rock
Rb-Sr
Magdalena G
granite
Magdalena Ggrraanniittee
Magdalena
granite Granite
Garcia Canyon metagabbro
amphibolite
Magdalena
g r a n iG
t er a n i t e
North
Baldy
metarhyolite
metarhyolite
Shakespeare Can m e t a r h y o l i tfee l s si cc h i s t
# 35
# 75
#147
#210
#285
#298
#299
Manzano Mountains
1338
1361
1366
1427
1438
1439
1527
1569
1656
1680
f
f:
T
3
3
2
** A r - A r
** A r - A r
** A r - A r
5
**
**
T
I
r
I
I
*
*
30
39
314
**
**
**
muscovite
Sevilleta
Metarhyolite
Fm
muscovite
Sevilleta
Metarhyolite
Fm
muscovite
Sevilleta
Metarhyolite
Fm
U-Pb
zircon
Priest
Quartz
Monzonite
Sevilleta
Metarhyolite
Fm
Ar-Ar hornblende
Priest Quartz Monzonite
Rb-Sr whole-rock
Rb-Sr whole-rock
Ojita granodiorite
Rb-Sr whole-rock
Priest
Quartz
Monzonite
U-Pb
zircon
Monte Largo Granodiorite
U-Pb
zSi e
r cvM
oi le
nl et at ar h y o l i t e
Fm
metarhyolite
pelitic schist
pelitic schist
quartz monzonite
amphibolite
quartz monzonite
biotite granodiorite
quartz monzonite
granodiorite
feldspathic schist
# 84
#105
#110
#155
#165
#167
#231
#247
#291
#306
91
Nacimiento Mountains (see also
1460
1800
1840
10
50
I 170
i
*
**
**
**
U-Pb
Rb-Sr
Rb-Sr
MOUNTAIN RANGE
Jemez Mtns and San PedroMtns)
#i90
zircon
Joaquin
quartz
monzonite
quartz
monzonite
whole-rock
San Pedro metavolcanics
quartz
whole-rock
San Pedro Leucogranodiorite
gneissic
granodiorite
latite
#343
#345
Oscura Mountains
1338 I 26
1346
1358
1368 =
1368 z
1625 I
*
*
**
**
**
**
**
**
Rb-Sr
Rb-Sr
K-Ar
K-Ar
K-Ar
Rb-Sr
whole-rock
whole-rock
biotite
muscovite
biotite
K-feldspar
Oscura
g br P
ai onl u
tiitt eoe n
Mockingbird
g r a nGap
ite pluton
Sun
No.
1 Bingham S t a t eg r a n i t eg r a n i t i cg n e i s s
granite
Oscura Pluton
Sun No. 1 Bingham S t agt e
r a n igt e
r a n igt e
neiss
Sun NO. 1 Bingham State
gneiss
granitic
gneiss
# 83
# 93
# I 03
#111
#112
#263
Pajarito Mounrain
1175
1180
1200
f.
*
i
15
25
25
**
**
Rb-sr
**
f e l dPsapgj arrraiient obi teegcrkaint ei t e
K -g
rAirerabgneri ta
cP
reiknaeijb
taeer ci tkoi t e
K-Ar
hornblende
Pajarito
**
**
**
**
K-Ar
Rb-Sr
K-Ar
Rb-Sr
b i oStti a
t en o l i n d
whole-rock
muscovite
K-feldspar
Rb-Sr
Rb-Sr
Rb-Sr
Rb-Sr
whole-rock
Pedernal
metasediments
whole-rock
Pedernal
Mtn g r a n i t e
whole-rock
Pedernal
Mtn g r a gn ri taen i t e
whole-rock
M-2 metavolcanic
metarhyodacite
Mtn pegmatite
pegmatitelsyenite
# 21
# 22
# 27
Pecos slope
1189
1273
1348
1387
I
*
*
.L
No. 11-X g r agnriat en i t e
Continental No.1 Langfordschistmuscoviteschist
Continental No.1 Langford schist musc s c h i s t
granite
De Kalb No. 1 Lewis g r a n i t e
# 26
# 44
# 95
# I 23
Pedernal H i l l s
1364
1416
1471
1493
i
*
.L
r
27
100
97
30
**
**
**
**
q u a r t z i t e and s c h i s r
granite
#107
#146
#201
#216
P i c u r i s Mountains
7
.12.3
1121
1183
1186
1246
1264
1273
1281
1286
1295
1300
1304
1309
1316
1319
1324
1329
1332
1335
1336
13k8
1353
1362
1366
1382
1396
1400
1406
1406
1407
1413
1416
1422
1422
1424
1427
+
-
*
T
=
.L
*
L
6
62
23
40
128
19
r
IL
=
20
20
r
t
d
i
*
*
20
73
t
r
LC
I
T
I
z
i
*
i
*
=
T
*
**
**
**
**
**
**
**
**
*
i
i
i
.e
**
**
172
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
Rh-Sr
..
Rb-Sr
Rb-Sr
Rb-Sr
Rb-Sr
Rb-Sr
K-Ar
Rb-Sr
Rb-Sr
Rb-Sr
Rb-Sr
Rb-Sr
K-Ar
K-Ar
K-Ar
Rb-Sr
Rb-Sr
Rb-Sr
K-Ar
Rb-Sr
Rb-Sr
Rb-Sr
Rb-Sr
Rb-Sr
Rb-Sr
Rb-Sr
Rb-Sr
Rb-Sr
Rb-Sr
Rb-Sr
Rb-Sr
Rb-Sr
Rb-Sr
Rb-Sr
Rb-Sr
Rb-Sr
microcline
perthite
bi-feld-w.r.
bi-feld-w.r.
lepidolite
rose muscovite
muscovite
whole-rock
whole-rock
muscovite
mica
whole-rock
mica
muscovite
muscovite
muscovite
lepidolite
whole-rock
muscovite
whole-rock
whole-rock
lepidolite
mica
cleavelandite
mica
cleavelandite
whole-rock
cleavelandite
cleavelandite
whole-rock
whole-rock
whole-rock
lepidolite
whole-rock
whole-rock
whole-rock
HardingPegmatite
HardingPegmatite
Rana Quartz Monzonite
Peiiasco Quartz Monzonite
HardingPegmatite
HardingPegmatite
RinconadaFormation
HardingPegmatite
HardingPegmatite
Harding Pegmatite
HardingPegmatite
HardingPegmatite
HardingPegmatite
Glenwoody Formation
Embudo g r a n i t e
HardingPegmatite
HardingPegmatite
Harding Pegmatite
Vadito Group
HardingPegmatite
HardingPegmatite
HardingPegmatite
HardingPegmatite
HardingPegmatite
HardingPegmatite
HardingPegmatite
Peiiasco Quartz Monzonite
HardingPegmatite
HardingPegmatite
Glenwoody Fm pegmatite
RinconadaFormation
HardingPegmatite
HardingPegmatite
Glenwoody Fm pegmatite
RinconadaFormation
Puntiagudo Granite Porphyt'Y
pegmatite
pegmatite perthite zone
grani re
granite
pegmatite
pegmarite
musc-bi-gtschist
pegmatitespottedrock
pegmatitespottedrock
pegmatite border zone
pegmatite
pegmatite spotted rock
pegmatite
qtz-musc s c h i s t
granite
pegmatite
pegmatitereplacementmicas
pegmatite spotted rock
pegmatite
pegmatite spotted rock
pegmatite spotted rock
pegmatitereplacementmicas
pegmatitereplacementmicas
pegmatite cleavelandite-qtz
pegmatitereplacementmica
pegmatite cleavelandite-qtz
quartz monzonite
pegmatite cleavelandire-qtz
pegmatite cleavelandite-qtz
pegmatite
pelitic schist
pegmatite
pegmatitereplacementmicas
pegmatite
pelitic schist
granite
#
#
#
#
#
#
#
#
#
#
#
5
16
23
25
34
38
45
46
48
52
54
# 55
# 59
# 63
# 67
# 71
# 77
# 80
# 81
# 82
# 94
#100
# I 06
#109
#120
#127
#132
#135
#136
#138
#144
#145
#148
#149
#151
#I54
98
1430
1435
1438
1440
1441
1441
1448
1654
1457
1460
1460
1676
1481
1494
1495
1697
1501
1502
1510
1529
1550
1565
1584
1598
1616
1627
1630
1655
1668
1673
1674
1680
1684
1700
1700
1700
1708
1727
1739
1765
1769
1780
1793
1899
** Rb-Sr
** Rb-Sr
*
** Rb-Sr
t 130 ** Rb-Sr
t
** Rb-Sr
*
** Rb-Sr
*
** U-Pb
i
** Rb-Sr
t
**
**
**
T
2
.L
**
**
I
:
T
**
**
**
**
9
r
r
**
**
=
42
130
I
IC
I
*
*
I
I_
I
:
41
**
**
**
**
**
**
**
**
**
**
**
z 5
i
i
*
t
*
1
9
T
T
I
*
t
*
**
**
**
21
**
**
**
**
**
**
**
**
Rb-Sr
Rb-Sr
U-Pb
Rb-Sr
Rb-Sr
Rb-Sr
Rb-sr
Rb-Sr
Rb-Sr
Rb-Sr
Rb-Sr
Rb-Sr
Rb-Sr
Rb-Sr
Rb-Sr
Rb-Sr
Rb-Sr
Rb-Sr
U-Pb
Rb-Sr
Pb-Pb
Rb-Sr
U-Pb
U-Pb
U-Pb
U-Pb
U-Pb
U-Pb
Rb-Sr
Pb-Pb
Rb-Sr
Pb-Pb
Pb-Pb
U-Pb
U-Pb
Rb-Sr
MOUNTAIN RANGE
whole-rock
whole-rock
whole-rock
whole-rock
Lepidolite
K-feldspar
zircon
muscovi r e
whole-rock
whole-rock
zircon
K-feldspar
mica
muscovite
whole-rock
cleavelandite
whole-rock
muscovite
muscovite
muscovite
whole-rock
cleavelandite
whole-rock
whole-rock
lepidolite
whole-rock
zircon
whole-rock
zircon
whole-rock
zircon
zircon
zircon
zircon
zircon
zircon
whole-rock
zircon
whole-rock
zircon
zircon
zircon
zircon
cleavelandite
Glenwoody Fm pegmatite
RinconadaFormation
Glenwoody Formation
Rana Quartz Monzonite
HardingPegmatite
HardingPegmatite
Peiiasco Quartz Monzonite
HardingPegmatite
RinconadaFormation
Vadito Group s c h i s t
Peiiasco Q u a r t z Monzonite
HardingPegmatite
HardingPegmatite
Harding Pegmatite
Vadito Group s c h i s t
HardingPegmatite
Vadito Group s c h i s t
HardingPegmatite
HardingPegmatite
HardingPegmatite
Puntiagudo Granite Porphyry
HardingPegmatite
Glenwoody Formation
Glenwoody Formation
HardingPegmatite
Glenwoody Formation
Cerro Alto Metadacite
Harding Pegmatite
Ortega Formation
Rana Quartz Monzonite
Rana Quartz Monzonite
Rio Pueblo Schist
Puntiagudo Granite Porphyry
Glenwoody Formation
Rana Quartz Monzonite
Puntiagudo Granite Porphyry
Glenwoody Formation
OrtegaFormation
Vadito Group s c h i s t
OrtegaFormation
OrtegaFormation
OrtegaFormation
OrtegaFormation
HardingPegmatite
pegmatite
pelitic schist
metarhyolite
quartz monzonite
pegmatitereplacementmicas
pegmatite
quartz monzonite
pegmatite border zone
pelitic schist
felsicschist
quartz monzonite
pegmatite
pegmatitereplacementmicas
pegmatite border zone
felsic schist
pegmatite cleavelandite-qtz
felsic schist
pegmatite border zone
pegmatite border zone
pegmatite wall-zone
granite
pegmatite cleavelandite-qtz
metarhyolite
metarhyolite
pegmatitereplacementmicas
metarhyolite
metadacite
pegmatite
quartzite
quartz monzonite
qdartz monzonite
feldspathic schist
granite
metarhyolite
quartz monzonite
granite
metarhyolite
quartzite
felsic schist
quartzite
quartzite
quartzite
quartzite
pegmatite cleavelandite-qtz
#I56
#I61
#I64
#I71
#I73
#I
74
#I77
#I81
#I85
#I86
#I89
#204
#209
#217
#218
#219
#223
#224
#226
#232
#237
#244
#251
#253
#259
#266
#269
#286
#301
#302
#303
#305
#307
#313
#314
#315
#319
#327
#332
#337
#339
#341
#342
#347
whole-rock
Rattlesnake H i l l s b a s a l t
basalt
#
Embudo g r a n i t e
RinconadaFormation
RinconadaFormation
Vadito Group
PecosComplex
Pecos Complex
Vadito Group
PecosComplex
P i d l i t e pegmatite
Vadi t o Group
Embudo g r a n i t e
Embudo g r a n i t e
PecosComplex
Embudo g r a n i t e
Embudo g r a n i t e
Embudo g r a n i t e
Macho Creek g r a n i t e
P i d l i t e pegmatite
Embudo g r a n i t e
Embudo g r a n i t e
Rana Quartz Monzonite
Embudo g r a n i t e
granite
pelitic schist
pelitic schist
qtz-musc s c h i s t
feldspar-musc schist
feld-musc schist
auartz-musc s c h i s t
jeld-musc schist
pegmatite
quartz-musc s c h i s t
granite
granite
bi-plag schist
granite
granite
granite
granite
pegmatite
granite
granite
apl ir e
g r a n i t e ,a p l i t e
#
#
#
#
#
#
Rattlesnake Hills
848
= 42
**
K-Ar
6
S. Sangre de C r i s t o Mtns
*
1185 1230 I 130
1253
28
1266
62
1286 I 9
1310
260
1319 I 42
1320 I43
1338 3
1352
24
1365 r
1372 z
1384 i 86
1412 i
1457 t
1464
50
1480 T
1490 T
1492 I_
1534 z
1608 z
1621 i 27
*
*
J_
*
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
Rh-Sr
.
Rb-Sr
Rb-Sr
K/Ar
Rb-Sr
Rb-Sr
Rb-Sr
K-Ar
K-Ar
Rb-Sr
Rb-Sr
Rb-Sr
Rb-Sr
Rb-Sr
Rb-Sr
Rb-Sr
U-Pb
Rb-Sr
Rb-Sr
Rb-Sr
Rb-Sr
Rb-Sr
whole-rock
min. separates
whole-rock
muscovite
min. separates
whole-rock
whole-rock
muscovite
mica
min. separates
whole-rock
*hole-rock
whole-rock
whole-rock
whole-rock
whole-rock
zircon
mica
whole-rock
khole-rock
whole-rock
whole-rock
24
31
36
39
47
61
# 65
# 69
# 85
# 99
#lo8
#I
14
#I21
#I43
#I84
#I93
#207
#212
#215
#234
#255
#261
99
1628 * 19
1630 d 250
1638 I 40
1640 I230
1650 t 10
1650 .e
1650 i
1660
10
1691 i
1710 t
1718
5
1720 i 15
1720 I
1730 r 110
*
*
**
**
**
**
**
**
**
**
Rb-Sr
Rb-Sr
Rb-Sr
Rb-Sr
U-Pb
U-Pb
U-Pb
U-Pb
U-Pb
Pb-Pb
U-Pb
U-Pb
Pb-Pb
Rb-Sr
whole-rock
*hole-rock
whole-rock
whole-rock
zircon
zircon
zircon
zircon
zircon
galena
zircon
zircon
ga 1ena
whole-rock
Embudo g r a n i t e
Pecos Complex
Embudo g r a n i t e
Pecos Complex
Dalton Canyon succession
I n d i a n Creek g r a n i t e
I n d i a n Creek granite?
Dalton Canyon succession
Pecos Baldy quartz porphyry
Pecos mineorebody
Windy B r i d g e t o n a l i t e
Jones r h y o l i t e complex
Tres Lagunas metavolcanics
Vadito Group amphibolite
MOUNTAIN RANGE
g r a n i t e ,a p l i t e
amphibolire
granite
amphibolite
quartz porphyry
granite
granite
quartz porphyry
qtz-feld porphyry
felsic schist
tonalite
quartz-eye porphyry
felsic metavolcanic
amphibolite
#267
#268
#271
#273
#278
#279
#280
#294
#310
#320
#322
#323
#325
#328
San AndresMountains
~
1243 i 170
1294 i 161
1325 i 76
1388 I:
1408 i
1430 i
67
1462
1568 d 91
1632 r 24
1730 z 130
*
**
**
**
**
Rb-sr
**
K-Ar
Rb-Sr
**
**
**
Rb-Sr
Rb-Sr
K-Ar
U-Pb
Rb-Sr
U-Pb
U-Pb
whole-rock
whole-rock
*hole-rock
biotite
biotite
whole-rock
zircon
whole-rock
zircon
zircon
monzonite
Mayberry
quartzpluton
Mineral Hillmonzonite
quartz
pluton
C a p i t o l Peak monzonite
quartz
pluton
San Andres p l u t o n
RhodesCanyon g r a n o d i o r i t e
White Mine gneiss
Mineral H
g
illr a
pn
l ui t e
on
Mineral Hillmonzonite
quartz
pluton
Mayberry p l u t o n
quartz
L i t t l e San Nicolas gneiss
granitic gneiss
granodioritic gneiss
granodiorite gneiss
monzonire
gt gneiss
~~
# 33
# 51
# 72
# I 24
#140
#157
#192
#246
#270
#329
San AndreslOscuraMtns
1013
I
:
242
**
Rb-Sr
whole-rock
Mockingbird
# 14
Gap pluton
quartz
monzonite
San Oiego Mountain
1368
1407
-X
i
**
**
K-Ar
Rb-Sr
biotite
whole-rack
Tonuco Mtn gdn
gi oe
nriesi ti si cs
Oiego
san
Mtn g ndeiiosgrsn
i tei ci s s
#113
#139
San PedroMountains
1615
1700
1730
*
*
15
5
I 20
*x
**
**
Rb-Sr
U-Pb
U-Pb
.%
qtz
monzonite
whole-rock
zircon
zircon
San Pedro quartz monzonire
Zuni unknown
meru
an
rg
hi tryaonl iittee,
San Pedro quartz monzonire
monzonite
quartz
q r zd i o r i t e
biotite
bi, whole-rock
bi, whole-rock
bi, whole-rock
biotite
bi,whole-rock
bi, whole-rock
bi, whole-rock
bi, whole-rock
mica
biotite
biotite
bi, whole-rock
mica
whole-rock
muscovite
muscovite
muscovite
whole-rock
muscovite
muscovite
zircon
muscovite
bi, whole-rock
muscovire
zircon
zircon
zircon
Sandia Granite
Sandia Granite
Sandia Granite
sandia Granite
Sandia Granite
Sandia Granite
Sandia Granite
Sandia Granite
Sandia Granite
Sandia Granite
Sandia Granite
sandia Granite
sandia Granite
Sandia Granite
Sandia Granite
Juan Tabo Series
Rincon pegmatite
Sandia Granite
Juan Tab0 pegmatites
Cibola quartzite
Rincon pegmatite
sandia Granite
Sandia G r a n i t e a p l i t e
Sandia Granite
Monte Largo/Sandia s c h i s t
Sandia Granite
Sandia Granite
Sandia Granite
orbicular granite
quartz monzonite
quartz monzonite
quartz monzonite
b i o t i t e monzonite
quartz monzonite
quartz monzonite
quartz monzonite
quartz monzonite
granite
orbicular granite
orbicular granite
quartz monzonite
granite
granite
metasedimentaryrock
pegmatite
granite
pegmatite and a p l i t e
muscovite quartzite
pegmatite
quartz monzonite
aplite
quartz monzonite
sillimanite schist
quartz monzonite
quartz monzonite
quartz monzonite
#258
E18
#331
SandiaMountains
*
*
1128
44
1300
1310 r
1320 =
1321 T 28
1330 r
1330 r
1340 r
1340 I
1340 E
1342 I 28
1343 = 27
1350 r
1358 2
1380 T
29
1384
1392 I_ 29
1402 i 1
1407
19
1423
2
1424 = 30
1430
20
1439 i
1440 i 40
1450
1455
20
1455
20
1460 t 20
*
*
*
*
*
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
Rb-Sr
Rb-Sr
Rb-sr
Rb-Sr
K-Ar
Rb-Sr
Rb-Sr
Rb-Sr
Rb-Sr
Rb-Sr
K-Ar
K-Ar
K-Ar
Rb-Sr
K-Ar
K-Ar
Ar-Ar
Rb-Sr
Ar-Ar
K-Ar
Pb-Pb
Rb-Sr
Rb-Sr
Rb-Sr
Pb-Pb
Pb-Pb
Pb-Pb
# 17
# 53
# 60
# 68
# 70
# 78
# 79
# 86
# 87
# 88
# 90
# 91
# 97
#104
#117
#122
#125
#134
#137
#150
#152
#158
#168
#170
#179
#182
# I 83
#I87
100
1460
1470
1470
1470
1472
1475
1480
1480
1490
1517
1520
1576
1640
i
*
20
20
= 20
.e 15
I_
t
*
90
t
T
r 49
T
r
2
72
40
**
**
**
**
**
**
**
**
**
**
**
**
Pb-Pb
Pb-Pb
Pb-Pb
Pb-Pb
Rb-Sr
Pb-Pb
Rb-Sr
Pb-Pb
Pb-Pb
Rb-Sr
Rb-Sr
Rb-Sr
Rb-Sr
zircon
sphene
zircon
zircon
whole-rock
zircon
whole-rock
sphene
sphene
whole-rock
muscovite
whole-rock
whole-rock
Sandia Granite
Sandia Granite
Sandia Granite
Sandia Granite
Sandia Granite
Sandia Granite
Sandia Granite
Sandia Granite
Sandia Granite
Sandia Granite
Juan Tabo Series
Cibola Gneiss
Juan Tab0 Series
MOUNTAIN RANGE
quartz monzonite
granite
quartz monzonite
quartz monzonite
granite
oranite
granulitic xenoliths
granite
granite
orbicular granite
bi-muscgneiss
granite gneiss
s c h i s t and amphibolite
#i99
#200
#202
#203
#205
#208
#214
#227
#229
#249
#272
gneiss, g rsacnhi itset ,
#326
#i88
#i98
-
Shiprock
1720 z 5
U-Pb Shiprock
xenoliths
zircon
S i e r r a Grande arch
1314
1397
**
T
**
Rb-Sr
Rb-Sr
biotite
K-feldspar
S i e r r a Grande No. 1 g r a n i tger a n i t e
Shamrock No. 1 McArthur g r a n i t eg r a n i t e
# 62
Comanche Point gabbro
L a t i r Creek q u a r t z i t e
Cedro Canyon gneiss
Cedro Canyon q u a r t z i t e
Cedro Canyon amphibolite
L a t i r Creek amphibolite
Old Mike Peak quartz monzonite
Urraca Ranch gneiss
Jarosa Canyon gneiss
C o s t i l l a Ck q t z monzonite
J a r a c i t o Canyon g r a n o d i o r i t e
HondoCanyon g r a n o d i o r i t e
F r a z i e r Mtn qtz monzonite
San C r i s t o b a l q u a r t z i t e
Comanche Point feld. schist
Columbine Ck qtz monzonite
Gold Hill m e t a d i o r i t e
Red R i v e r t o n a l i r e
Gold Hill Complex
San C r i s t o b a l q u a r t z i t e
#
#129
Taos Range
670 .e
960 * 1
964 * 1
1005 i 1
1306 t 4
1326 * 3
1326 i 20
1585
1643 .t
1644
1678 i
1689 i
1699 3
1713 *
1720 I
1730 T
1741 I
1750 I
1765 5
1775 I
*
**
whole-rock
muscovite
muscovi r e
A r - A r muscovi r e
Ar-Ar hornblende
A r - A r hornblende
muscovite
K-Ar
U-Pb
zircon
U-Pb
zircon
zircon
U-Pb
z i rcon
U-Pb
zircon
U-Pb
U-Pb
zircon
Pb-Pb z i r c o n
zircon
U-Pb
U-Pb
zircon
zircon
U-Pb
zircon
U-Pb
U-Pb
zircon
Pb-Pb z i r c o n
** ARb-Sr
r-Ar
** Ar-Ar
**
**
**
**
**
**
**
**
gabbro
quartzite
gneiss
quartzite
amphibolite
amphibolite
pegmatite
felsic gneiss
felsic gneiss
quartz monzonite
granodiorite
granodiorite
quarrz monzonite
quartzite
feldspathic schist
quartz monzonite
metadiorite
dioritic plutons
felsic metavolcanics
quartzite
2
# 10
# 11
# 13
# 57
#73
# 74
#252
#274
#275
#304
#309
#312
#321
#324
#330
#333
#334
#338
#340
Tucumcari basin
1139
1666
i
i
**
**
Rb-Sr
Rb-Sr
whole-rock
Husky-General No. 1 g r a n igt rea n i t e
whole-rock
Cities
Service
No. 1 g r a n g
i trea n i t e
# 18
#300
Tusas Mountains
~
1234 T 19
1272 I: 19
1272 T 19
1307 T 20
1317 T 15
1319 x 20
1340 T 20
1343 I21
1425 d 15
1449 I
1462 t 21
1467
43
1469 1: 43
1550 r 40
1621 * 15
1626 & 17
1650 z
1654 I: 23
1688 I: 33
1700 r
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
K-Ar
K-Ar
K-Ar
K-Ar
K-Ar
K-Ar
K-Ar
K-Ar
Rb-Sr
Pb-Pb
Rb-Sr
Rb-Sr
Rb-Sr
Rb-Sr
U-Pb
Rb-Sr
U-Pb
Rb-Sr
Rb-Sr
U-Pb
biotite
muscovite
muscovite
muscovi t e
hornblende
muscovi t e
biotite
biotite
mu, whole-rock
zircon
whole-rock
whole-rock
*hole-rock
whole-rock
zircon
whole-rock
zircon
whole-rock
whole-rock
zircon
TresPiedrasGranite
Vadito Group
Vadito Group
Vadito Group
Vadito Group
Vadito Group
Vadito Group
Vadito Group
Vadito Group
Tusas Mtn g r a n i t e
Tres Piedras Granite
Hopewell Lake g r a n i t e
Tres Piedras Granite
Tusas Mtn g r a n i t e
Tres Piedras Granite
Tres Piedras Granite
Tres Piedras Granite
Rio Brazostrandhjemite
Rio Brazos trondhjemite
Burned Mtn Formation
~~
granitic gneiss
qtz-mu-feld schist
qtz-mu s c h i s t
qtz-mu s c h i s t
h b l - c h l - b is c h i s t
pegmatite
h b l - c h l - b is c h i s t
qtz-mu-hischist
f e l d s c h i s t & pegmatite
granite
quartz monzonite gneiss
granite
quartz monzonite gneiss
granite
granite
qtz monzonite gneiss
granite
trondhjemite
trondhjemite & hornblendire
metarhyolite
~
# 32
# 42
# 43
# 58
# 64
# 66
# 89
# 92
#153
#178
#191
#195
#I 97
#238
#262
#265
#281
#284
#308
#316
101
1700
1755
1755
*
5
*
**
U-Pb
MOUNTAIN RANGE
U-Pb
zircon
zircon
zircon
K-Ar
Rb-Sr
U-Pb
Rb-Sr
U-Pb
U-Pb
U-Pb
whole-rock
I c e Caves diabase dike
dike
diabase
whole-rock
Post
Office
Flat
metarhyolite
metarhyolite
zircon
Zuni unknown
g r a n i tuen i t
whole-rock
M i r a b e l" a p l i t e "
g r a n o d i o r gi trea, n ai tpel,i t e
zircon
Zuni unknown
s cf eh li suitn
cs i t
zircon
Zuni felsic metavolcanics
felsic schist
z i r c o n g r a n i t e Zuni g r a n i t e
** U-Pb
Burned Mtn Formation ?
OrtegaFormation
Maquinita Granodiorite
s c h i sf te l d s p a t h i c
quartzite
granodiorite
#317
#335
#336
ZuniMountains
951
1380
1440
1490
1650
1655
1655
r
20
T
x
30
10
90
x
5
r
*
*
**
**
**
**
**
# 9
#i18
# I 72
#213
#2a2
#2aa
#2a9
102
PART lV
List. of isotopic age determinations by name of rock unit
ROCK UNII
AGE
(**I
MATERIAL
** = significance of age is uncertain
MOUNTAIN RANQE
ROCK TYPE
RECORD#
103
ROCK U N I l
Bootleg Canyon a D l i t e
1658
12
U-Pb
zircon
Los
Mountains
Pinos
apatite
zircon
sphene
Los PinosMountains
Los PinosMountains
Los
Mountains
amphibolite
Pinos
amphibolite
amphibolite
#i80
B i g Burro
Mountains
B i g Burro Mountains
#141
Mountains
Big Burro Mountains
B i g Burro Mountains
sill-gt gneiss
gneiss
sill-gt gneiss
sill-st gneiss
s i lgl -nset i s s
zircon
Tusas Mountains
metarhyolite
#316
zircon
Tusas Mountains
fe
s cl dhsi spta t h i c
#317
zircon
zircon
B i g BurroMountains
Big Burro Mountains
diabase dike
diabase dike
#221
#225
d ai kpel i t e
#292
Bootleg Canyon sequence
~
1450 5
1660 i 2
1660 r
**
**
U-Pb
U-Pb
U-Pb
#295
#296
B u l l a r d Peak Series
1410
1410
1542
1550
1567
i
*
*
50
50
**
**
**
**
**
i
T
K-Ar
biotite
K-Ar
biotite
Pb-Pb BzuB
i rricrgo n
U-Pb
zircon
Pb-Pb z i r c o n
#142
#235
#240
#245
BurnedMtnFormation
1700
*
**
U-Pb
BurnedMtnFormation
1700
**
i
?
U-Pb
Burro Mtn diabase
1500
1505
**
L
**
E
U-Pb
Pb-Pb
Burro Mtn g r a n i t e
1270 T
1437 T
1437 T
1444 t
1445 .L 15
1550 i
**
**
**
**
**
Rb-Sr b i o t i t e
Pb-Pb z i r c o n
Pb-Pb z i r c o n
Pb-Pb z i r c o n
U-Pb
zircon
K-Ar
biotite
B i g Burro
Mountains
gneissic
granite
Big Burro Mountains
B i g Mountains
Burro
granite
B i g Burro Mountains
Big Burro Mountains
B i Mountains
g Burro
granite
& granite
granite
granite
granite
# 41
#162
# I 63
# I 75
# I 76
#239
Burro Mtn g r a n o d i o r i t e
1380
T
45
**
K-Ar
biotite
B i g Mountains
Burrogranodiorite
# I 19
Caballo Granite
1304
**
2
Rb-Sr granite
Mountains
whole-rock
gneissic
Caballo
# 56
Rb-Sr
# 12
Capirote Granite
986
T
29
**
whole-rock
Mountains
monzonite
Ladron
quartz
Capitol Peak Pluton
1325 t 76
**
Rb-Sr
monzonite
quartz
# 72
hornblende Range Taos
amphibolite
# 57
muscovite
Range
Taos
gneiss
# 11
muscovire
Taos Range
quartzite
# 13
whole-rock
San Mountains
Andres
Cedro Canyon amphibolite
1306
*
4
**
Ar-Ar
Cedro Canyon gneiss
964
i
1
**
Ar-Ar
Cedro Canyon q u a r t z i t e
~~
1005
i
1
**
Ar-Ar
Cerro Alto Metadacite
1630
*
**
U-Pb
P i c u r i sz i r c o n
metadacite
Mountains
#269
104
ROCK UNIl
ChuDadera g r a n i t e
1659
I
3
U-Pb
zircon
Rb-Sr
*hole-rock
Ar-Ar
muscovite
Chupadera Mountains
granite
#293
g nger ai snsi t e
#249
Cibola Gneiss
1576
i
72
**
Mountains
Sandia
Cibola quartzite
1423
T
2
**
Mountains
muscovite
Sandia
quartzite
#150
Cimarron River tectonic unit
1350
i
1
**
A r - A r Cimarron
muscovite
Range
metarhyolite
# 98
granite
granite
#102
quartz-diorite
#311
C i t i e s S e r v i c e No. 1 g r a n i t e
1358
1666
*
*
**
**
K-Ar
Rb-Sr
biotite
whole-rock
Great Plains Province
Tucumcari basin
#300
Clear Creek q u a r t z - d i o r i t e
1692
T
2
**
Ar-Ar
Cimarron
hornblende
Range
Columbine Ck qtz monzonite
1730
*
U-Pb
z i r c o n Range
Taos
monzonite
quartz
#330
Comanche P o i n t f e l d . s c h i s t
1720
U-Pb
T
z i r c o n Range
Taos
s c hf ei sl d
t spathic
E24
Comanche Point gabbro
670
**
T
Rh-Sr whole-rock
Range
Taos
gabbro
# 2
musc s c h i s t
# 44
# 95
Continental No. 1 s c h i s t
1273
1348
*
*
**
**
Rb-Sr
K-Ar
whole-rock
muscovite
schist
Pecos
muscovite
slope
Pecos slope
Continental No. I - E gneiss
1139
*
**
Rb-Sr
biotite
# 19
Delaware
g ngeri sa sn bi tai cs i n
C o s t i l l a Ck qtz monzonite
1644
U-Pb
r
zircon
Taos Range
monzonite
quartz
#275
S. Sangre d e
Cristo
S. SangreC rdi e
sto
Mtns
Mtns
#278
#294
Dalton Canyon succession
U-Pb
U-Pb
1650 T 10
1660 z 10
zircon
zircon
quartz
porphyry
quartz
porphyry
De Kalb No. 1 Lewis g r a n i t e
**
1387 *
EagleNest
1467
d
35
EagleNest
1488
*
42
Rb-Sr
K-feldspar
g rPecos
anite slope
23
#I
felsic gneiss
**
Rb-Sr
whole-rock
Cimarron
Range
ggnreai n
s si t i c
#196
Rb-SrCimarron
whole-rock
Range
granite
#211
granite
**
105
EagleNest
ROCK U N l l
t e c t o n i c unit
**
1268 t 1
1394 i 8
1401 i 2
1430 i
1430 2
**
**
AT-Ar
Ar-Ar
Ar-Ar
U-Pb
U-Pb
muscovite
hornblende
hornblende
monazite
zircon
Cimarron
Cimarron
Cimarron
Cimarron
Cimarron
Range
Range
Range
Range
Range
# 40
#i26
#133
#159
#160
q u agr tnzei ti e
ssic
amphibolite
amphibolite
gneiss
gt-plag
gneiss
gt-plag
EE-2 monzogranite
~
1550
d
**whole-rock
Rb-Sr
130
Embudo g r a n i t e
~~~~~
1185 *
1319 i 20
1365 *
1372 i
1412 I
1457 3
1464 r 50
1492 z
1534 r
1621 T 27
1628 * 19
1638 * 40
**
**
**
**
**
**
**
**
**
**
**
**
~~
#236
Jemez Mountains
monzogranite
gneiss
Rb-Sr
K-Ar
Rb-Sr
Rb-Sr
Rb-Sr
Rb-Sr
Rb-Sr
Rb-Sr
Rb-Sr
Rb-Sr
Rb-Sr
Rb-Sr
whole-rock
muscovite
whole-rock
whole-rock
whole-rock
whole-rock
whole-rock
whole-rock
whole-rock
whole-rock
whole-rock
whole-rock
S. Sangrede C r i s t a
P i c u r i s Mountains
S. Sangrede C r i s t o
S. Sangre de C r i s t o
S. Sangre de C r i s t o
S. Sangre de C r i s t o
S. Sangre de C r i s t o
S. Sangre de C r i s t o
S. Sangre de C r i s t o
S. Sangre de C r i s t o
S. Sangre de C r i s t o
S. Sangrede C r i s t o
Pb-Pb
Pb-Pb
Pb-Pb
U-Pb
zircon
zircon
zircon
zircon
Florida
Florida
Florida
Florida
Mtns
Mtns
Mtns
Mtns
Mtns
Mtns
Mtns
Mtns
Mtns
Mtns
Mtns
granite
granite
grani te
granite
granite
granite
granite
granite
granite
g r a n i t e ,a p l i t e
g r a n i t e ,a p l i t e
granite
# 24
# 67
#I
08
# I 14
#143
#184
#193
#215
#234
#261
#267
#271
granitic
granitic
granitic
granitic
#241
#242
#248
#257
Florida gneiss
1554
1556
1570
1610
**
**
**
**
f
2
*
T
Mountains
Mounrains
Mountains
Mountains
gneiss
gneiss
gneiss
gneiss
F l o r i d a Mtns g r a n i t e
1530
i
120
**
Rb-Sr
#233
whole-rock
Florida
Mountains
monzonite-granodiorite
qtz
Frazier Mtn q t z monzonite
1699
U-Pb
i
z i r c o n Range
Taos
#312
monzonitequartz
Garcia Canyon metagabbro
1485 t 234
**
Rb-Sr
whole-rock
#210
Magdalena Mountains
amphibolite
Glenwoody Fm pegmatite
1407
1422
1430
T
I_
x
**
**
**
Rb-Sr
Rb-Sr
Rb-Sr
whole-rock
Picuris
Mountains
whole-rock
P i c u r i s Mountains
whole-rock
P i c u r i s Mountains
pegmatite
pegmatite
pegmatite
#138
#149
#156
Glenwoody Formation
1316 d 20
** K - A r muscovite
P i c u r i s Mountains
qtz-musc
1438 f
**whole-rock
Rb-Sr
P i c u r i s Mountains
metarhyolite
1584 t
** Rb-Sr whole-rock
Picuris
Mountains
1598 i
** Rb-Sr whole-rock
Picuris
Mountains
1627 i
** Rb-Sr whole-rock
P i c u r i s Mountains
1700 I
** U-Pb z i r c o n
. P i c u r i s Mountains
1708
whole-rock
** Rb-Sr
P i c umetarhyolite
r i s Mountains
schist
metarhyolite
metarhyolite
metarhyolite
metarhyolite
# 63
#164
#25 1
#253
#266
#313
#319
Gold Hill Complex
1765
*
U-Pb
zircon
Range
Taos
f e l s i c metavolcanics
W38
Taos
metadiorite
#333
Gold Hill metadiorite
1741
T
U-Pb
z i r cRange
on
106
ROCK
GT-1 amphibolite
~~
1830
1920
170
I 180
I
**
**
Rb-Sr
Rb-Sr
whole-rock
whole-rock
Jemez Mountains
Jemez Mountains
granite-veined
amphibolite
amphibolite
#344
#348
GT-2 and E E - 1 monzogranite
1620
T
**
40
Rb-Sr
whole-rock
#260
Jemez Mountains
monzogranitic
gneiss
GT-2 and EE-2 g r a n o d i o r i t e
1500
f
120
**
~~
Rb-Sr
khole-rock
Jemez Mountains
gbriaont iot e
diorite
#220
zircon
sphene
epidote
epidote
epidote
Jemez
Jemez
Jemez
Jemez
Jemez
granodiorite
granodiorite
granodiorite
granodiorite
granodiorite
#194
GT-2 g r a n o d i o r i t e
1465
1500
1518
1520
1583
f
X
T
=
30
25
210
210
220
**
**
**
**
**
Pb-Pb
Pb-Pb
Pb-Pb
Pb-Pb
Pb-Pb
Mountains
Mountains
Mountains
Mountains
Mountains
#222
#228
#230
#250
GT-2, E E - 1 , EE-2 dikes
1440
d
**whole-rock
Rb-sr
30
#169
Jemez Mountains
monzogranite
dikes
HardingPegmatite
718
1121
1246
1264
1281
1286
1295
1300
1304
1309
1324
1329
1332
1336
1348
1353
1362
1366
1382
1396
1406
1406
1416
1422
1441
1441
1454
1476
1481
1494
1497
1502
1510
1529
1565
1616
1655
1899
*
*
*
i
*
6
40
128
=
x
T
T
T
r
**
**
**
**
r
73
=
z
r
i
*
i
i
**
**
**
**
**
**
**
**
**
**
T
r
**
**
172
t
i
i
*
1:
i
i
*
T
I_
T
3
z 42
=
.e
t
*
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
Rb-Sr
Rb-Sr
Rb-Sr
Rb-Sr
Rb-Sr
Rb-Sr
Rb-Sr
Rb-Sr
Rb-sr
K-Ar
Rb-Sr
Rb-Sr
Rb-Sr
Rb-Sr
Rb-Sr
Rb-Sr
Rb-Sr
Rb-Sr
Rb-Sr
Rb-Sr
Rb-Sr
Rb-Sr
Rb-Sr
Rb-Sr
Rb-Sr
Rb-Sr
Rb-Sr
Rb-Sr
Rb-sr
Rb-sr
Rb-Sr
Rb-Sr
Rb-Sr
Rb-Sr
Rb-Sr
Rb-sr
Rb-Sr
Rb-Sr
microcline
perthite
lepidolite
rose muscovite
whole-rock
whole-rock
muscovite
mica
whole-rock
mica
muscovite
lepidolite
whole-rock
whole-rock
whole-rock
lepidolite
mica
cleavelandite
mica
cleavelandite
cleavelandite
cleavelandite
whole-rock
lepidolite
lepidolite
K-feldspar
muscovite
K-feldspar
mica
muscovi t e
cleavelandite
muscovite
muscovite
muscovite
cleavelandite
lepidolite
whole-rock
cleavelandite
Picuris
Picuris
Picuris
Picuris
Picuris
Picuris
Picuris
Picuris
Picuris
Picuris
Picuris
Picuris
Picuris
Picuris
Picuris
Picuris
Picuris
Picuris
Picuris
Picuris
Picuris
Picuris
Picuris
Picuris
Picuris
Picuris
Picuris
Picuris
Picuris
Picuris
Picuris
Picuris
Picuris
Picuris
Picuris
Picuris
Picuris
Picuris
Mountains
Mountains
Mountains
Mountains
Mountains
Mountains
Mountains
Mountains
Mountains
Mountains
Mountains
Mountains
Mountains
Mountains
Mountains
Mountains
Mountains
Mountains
Mountains
Mountains
Mountains
Mountains
Mountains
Mountains
Mountains
Mountains
Mountains
Mountains
Mountains
Mountains
Mountains
Mountains
Mountains
Mountains
Mountains
Mountains
Mountains
Mountains
pegmatite
pegmatite perthite zone
pegmatite
pegmatite
pegmatite spotted rock
pegmatite spotted rock
pegmatite border zone
pegmatite
pegmatite spotted rock
pegmatite
pegmatite
pegmatitereplacementmicas
pegmatite spotted rock
pegmatitespottedrock
pegmatitespottedrock
pegmatitereplacementmicas
pegmatitereplacementmicas
pegmatite cleavelandite-qtz
pegmatitereplacementmica
pegmatite cleavelandite-qtz
pegmatite cleavelandite-qtz
pegmatite cleavelandite-qtz
pegmatite
pegmatitereplacementmicas
pegmatitereplacementmicas
pegmatite
pegmatiteborder zone
pegmatite
pegmatitereplacementmicas
pegmatiteborder zone
pegmatite cleavelandite-qtz
pegmatiteborder zone
pegmatiteborder zone
pegmatite wall-zone
pegmatite cleavelandite-qtz
pegmatitereplacementmicas
pegmatite
pegmatite cleavelandite-qtz
5
16
34
38
46
48
# 52
# 54
# 55
# 59
# 71
#77
# 80
# 82
# 94
#100
#106
#109
granite
#
granodiorite
#309
#
#
#
#
#
#
#120
#127
#135
#136
#145
#148
# I 73
# I 74
#181
#204
#209
#217
#219
#224
#226
#232
#244
#259
#286
#347
Hombrook Mtn g r a n i t e
950
T
B u**
r r o K -B
A ir g
HondoCanyon
1689 t
biotite
Mountains
8
granodiorite
U-Pb
z i r c Range
on
Taos
UNIT
107
ROCK UNIT
Hopewell Lake g r a n i t e
1467
T
43
**
Rb-Sr
whole-rock
Tusas Mountains
#i95
granite
Humble No. 1 Huapache g r a n i t e
1356 x 20
1397 = 30
**
**
Rb-Sr
Rb-Sr
biotite
feldspar
Delaware
gra
bn
i oi tbe
i at es i n
Delaware basin
#i01
granite
#130
biotite
Husky-General No. 1 g r a n i t e
**
1139 t
Rb-Sr
khole-rock
# 18
Tucumcari
g r a n i t eb a s i n
I c e Caves diabase dike
951
i 20
**
K-Ar
khole-rock diabase
Mountains
Zuni
dike
#
9
I n d i a n Creek g r a n i t e
1650 r
U-Pb
zircon
S. Sangre
C r i sdteo
Mtns
granite
#279
zircon
S. Sangre de C r i s t o Mtns
granite
#280
zirco
Range
n
Taos
granodiorite
X304
zircon
Taos
I n d i a n Creek granite?
1650
*
**
U-Pb
J a r a c i t o Canyon g r a n o d i o r i t e
1678
*
U-Pb
Jarosa Canyon gneiss
1643
**
T
U-Pb
Range
gneiss felsic
#274
Joaquin quartz monzonite
1460 z 10
**
#190
U-PbNacimiento
monzonite
Mountains
zircon
quartz
Jones r h y o l i t e complex
1720
=
15
U-Pb
zircon
S. Sangre de C r i s t o Mtns
quartz-eye
porphyry
#323
Juan Tab0 pegmatites
1407 .e 19
**
Rb-Sr
whole-rock
Mountains
Sandia
pegmatite
and a p l i t e
#137
Juan Tab0 Series
1384 i 29
1520 i
1640 t 40
**
**
**
K-Ar
muscovite
metasedimentary
rock
Mountains
Sandia
Rb-Sr muscovite
gneiss
Mountains
bi-musc
Sandia
Rb-Sr
whole-rock
Mountains
Sandia
s c h i s t and amphibolite
#122
#229
#272
Pb-Pb
Hole
Kilbourne
zircon
Rb-Sr whole-rock
Kilbourne Hole
Rb-Sr whole-rock
Kilbourne Hole
Rb-Sr khole-rock
Kilbourne
Hole
g t gxreannoulliitthe
gneiss, g t & c h a r n o c k i t e g r a n u l i t e
g t & charnockite granulite
f e l gneiss,charnockitegranulite
#115
#346
#349
#350
Rb-Sr
Mountains
Ladron
whole-rock
granite
# 49
Kilbourne Hole xenolith
*
1375
1890 r 100
1990 = 260
2040 = 190
**
**
**
**
Ladron Granite
1291
T
51
**
Ladron metavolcanic sequence
1163 f 56
**
Rb-Sr
whole-rock
Ladron
Mountains
f esl cs h
i ci s t
& amphibolite
# 20
L a t i r Creek amphibolite
1326
i
3
**
Ar-Ar
hornblende
Taos Range
amphibolite
#73
muscovite Range
Taos
quartzite
# 10
L a t i r Creek Q u a r t z i t e
960
*
1
**
Ar-Ar
108
ROCK UNll
Lemitar granite
1648
*
3
Lemitar
U-Pb
zircon
Mountains
granite
#277
L i t t l e san Nicolas gneiss
1730
*
130
**
zircon
San
Mountains
Andres
g t gneiss
#329
Rb-Sr
Rb-Sr
Rb-Sr
U-Pb
U-Pb
whale-rock
whole-rock
whole-rock
zircon
zircon
LosMountains
Pinos
Los PinosMountains
Los PinosMountains
LosMountains
Pinos
LosMountains
Pinos
granite
granite gneiss
granite
granite
granite
#I
16
#206
#254
#283
#290
Rb-Sr
whole-rock
Pedernal
metarhyodacite
#21 6
U-Pb
Los Pinos granite
1380 L 29
1480 *
1601 i 239
1653 t
1655 * 3
**
**
**
M-2 metavolcanic
1493
*
30
**
Hills
Macho Creek g r a n i t e
1480
zircon
S. Sangre de C r i s t o Mtns
granite
#207
whole-rock
whole-rock
whole-rock
zircon
Magdalena
Magdalena
Magdalena
Magdalena
granite
granite
granite
granite
# 35
U-Pb
zircon
Tusas Mountains
granodiorite
#336
Rb-Sr
U-Pb
whole-rock
zircon
San Andres
Mountains
San Andres
Mountains
quartz
monzonite
quartz
monzonite
# 33
#270
Rb-Sr
U-Pb
Rb-Sr
whole-rock
zircon
*hole-rock
monzonite
quartz
San AndresMountains
San AndresMountains
granite
monzonite quartz
San AndresMountains
Rb-Sr
whole-rock
Mountains
Zuni
granodiorite,
granite,
aplite
U-Pb
T
Magdalena Granite
1247
1327
1420
1654
I_
T
i
=
62
136
117
1
**
**
**
Rb-Sr
Rb-Sr
Rb-Sr
U-Pb
Mountains
Mountains
Mountains
Mountains
# 75
#147
#285
Maquinita Granodiorite
1755
T
Mayberry p l u t o n
1243 = 170
1632 = 24
**
Mineral Hill p l u t o n
1294
1462
1568
i
i
+
161
67
91
**
**
# 51
#192
#246
M i r a b e l" a p l i t e "
1490
i
90
**
#213
Mockingbird Gap p l u t o n
1013 i 242
1346 z
**
**
Rb-Sr
Rb-Sr
whole-rock
whole-rock
San AndresIOscura Mtns
OscuraMountains
quartz monzonite
granite
# 14
# 93
Manzano Mountains
granodiorite
#291
s i l lsi m
c hains itt e
#I 79
Monte Largo Granodiorite
1656
*
U-Pb
zircon
Monte LargolSandia schist
1450
*
**
Rb-Sr
muscovite
Mountains
Sandia
North Baldv metarhvolite
1664
i
3
U-Pb
zircon
Magdalena Mountains
metarhyolite
#298
whole-rock
Manzano Mountains
bgi roat n
i t oe d i o r i t e
#23 1
ojita granodiorite
1527
T
39
**
Rb-Sr
109
ROCK UNll
Old Mike Peak quartz monzonite
1326
i
20
**
K-Ar
muscovite Range
Taos
pegmatite
# 74
Pb-Pb
Pb-Pb
U-Pb
Pb-Pb
Pb-Pb
U-Pb
U-Pb
zircon
zircon
zircon
zircon
zircon
zircon
zircon
P i c u r i s Mountains
P i c u r i s Mountains
Tusas Mountains
P i c u r i s Mountains
P i c u r i s Mountains
P i c u r i s Mountains
P i c u r i s Mounrains
quartzite
quartzite
quartzite
quartzite
quartzite
quartzite
quartzite
a01
#327
Rb-Sr
K-Ar
whole-rock
Oscura
Mountains
muscovite
Oscura Mountains
biotite granite
granite
# 83
#111
Rb-Sr
K-Ar
feldspar
Pajarito
Mountain
r i e b e c kPi taej a rMi toou n t a i n
riebeckite granite
riebeckite granite
# 21
# 22
OrtegaFormation
*
1668
1727 +
1755 3
1765 r
1769 T
1780 9
1793 T 21
**
**
**
**
**
**
#335
#337
#339
#341
#342
Oscura Pluton
1338 i 26
1368
*
**
**
Pajarito granite
1175
1180
T
15
T
25
**
**
P a j a r i t o Mtn Degmatite
.~
1200
I_
25
**
K-Ar
hornblende
pegmatitelsyenite
Mountain
Pajarito
# 27
Pecos Baldy quartz porphyry
1691
*
U-Pb
zircon
S. Sangre de C r i s t a Mtns
p
qo
t zr-pf he yl dr y
#310
Rb-Sr
Rb-Sr
K-Ar
Rb-Sr
Rb-Sr
Rb-Sr
min. separates
whole-rock
muscovite
whole-rock
*hole-rock
whole-rock
S. Sangre de C r i s t a Mtns
feldspar-musc
schist
feld-musc s c h i s t
feld-musc s c h i s t
bi-plag schist
amphibolite
amphibolite
# 47
# 61
# 69
#121
#268
#273
Pecos Complex
*
1286
9
1310 .L 260
1320 i 43
1384 I86
1630 I 250
1640
230
*
**
**
**
**
**
**
S. Sangre de
S. Sangre de
S. Sangre de
S. Sangre de
S. Sangre de
Crista
Crista
Crista
Crista
Crista
Mtns
Mtns
Mtns
Mtns
Mtns
Pecos mineorebody
**
1710 .e
Pb-Pb galena
S. Sangre de C r i s t o Mtns
s cf ehlissitc
#320
Pedernalmetasediments
1364 i 27
**
Rb-Sr whole-rock
Pedernal
qH
u ai l rl tsz i t e
and s# cI h i s t
07
Pedernal Mtn g r a n i t e
1416
1471
100
i 97
**
**
Rb-Sr whole-rock
Pedernal
Rb-Sr
whole-rock
H
i11s
Pedernal
granite Hills
#146
grani te
#201
Peiiasco Quartz Monzonite
1186
1400
1448
1460
*
23
T
*
**
**
**
**
Rb-Sr bi-feld-w.r.
Rb-Sr whole-rock
U-Pb
zircon
U-Pb Pzi icrucroi n
s
P i c u r i s Mountains
P i c u r i s Mountains
P i c u r i s Mountains
Mountains
# 25
#132
# I 77
#189
granite
monzonite
quartz
quartz monzonite
monzonite
quartz
Pickett Springs granite
1608 2
1647 z
1655 f. 15
**
**
**
~
Pb-Pb
Pb-Pb
U-Pb
zircon
zircon
zircon
Black Range
Black Range
Black Range
granophyre
granophyre
granophyre
#256
#276
#287
mica
S. Sangre
de
C r i s t a Mtns
S. Sangre de C r i s t o Mtns
pegmatite
pegmatite
# 85
#212
P i d l i t e pegmatite
1338
1490
r
r
**
**
K-Ar
Rb-Sr
mica
110
ROCK
Post O f f i c e F l a t m e t a r h v o l i t e
1380
*
30
**
Rb-Sr
whole-rock
Mountains
Zuni
metarhyolite
Priest Quartz Monzonite
1427 r
1439 t 30
1569 f 314
**
**
U-Pb
Rb-Sr
Rb-Sr
zircon
whole-rock
whale-rock
Manzano Mountains
Manzano Mountains
Manzano Mountains
quartz monzonite
quartz monzonite
quartz monzonite
#i55
#167
#247
granite
granite
granite
granite
#154
#237
#307
#315
granite
quartz
quartz
# 23
# I 71
#255
2502
#303
#314
basa lt
#
dioritic
#334
granodioritic
gneiss
#140
pegmatite
pegmatite
#125
#152
p e l i t iscc h i s t
p e l i t i cs c h i s t
# 31
# 36
# 45
#144
#151
#161
#185
Puntiagudo Granite POrDhVrV
1427 t
1550
130
1684 + I
1700
*
**
**
**
Rb-Sr whole-rock
Picuris
Mountains
Rb-Sr whole-rock
P i c u r i s Mountains
U-Pb P i zc iur rcios n
Mountains
U-Pb
zircon
P i c u r i s Mountains
Rana QuartzMonzonite
1183
62
1440 d 130
1608 i
1673 f. 41
1674U-Pb
I
: 5
1700 T
**
**
**
**
Rb-Sr
Rb-Sr
Rb-Sr
Rb-Sr
**
U-Pb
bi-feld-w.r.
whole-rock
whole-rock
whole-rock
zircon
zircon
P i c u r i s Mountains
Pmonzonite
i c u r i quartz
s Mountains
S. Sangre
de
C r i s t o Mtns
monzonite
P i cquartz
u r i s Mountains
P i c u r i s Mountainsmonzonite
P i c u r i s Mountainsmonzonite
aplite
Rattlesnake Hills basalt
848
2
42
**
K-Ar
whole-rock
Rattlesnake
Hills
6
Red R i v e r t o n a l i t e
1750
U-Pb
r
RhodesCanyon
1408
Range Taos
plutons
granodiorite
**
I
:
zircon
K-Ar
biotite
K-Ar
K-Ar
muscovite
Sandia
Mountains
muscovite
Sandia
Mountains
San Andres Mountains
Rincon pegmatite
1392
1424
T
x
29
30
**
**
Rinconada Formation
1230
1253
1273
1413
1424
1435
1457
*
*
*
*
130
28
19
*
*
*
**
**
**
**
**
**
**
Rb-Sr min. separates
Rb-Sr whole-rock
K-Ar
muscovite
whole-rock
Rb-Sr
Rb-sr
whole-rock
Rb-Sr whole-rock
Rb-Sr whole-rock
Picuris
Mountains
schist
pelitic
S. Sangre
de
C r i s r o Mtns
S. Sangre
de
C r i s t o Mtns
P i c u r i s Mountains
musc-bi-gt
schist
P i c u r i s Mountains
P i c u r i s Mountains
P i c u r i s Mountains
pelitic schist
spcehl ii tsi tc
spcehl ii tsi tc
Tusas Mountains
Tusas Mountains
trondhjemite
trondhjemite & hornblendite
Rio Brazos trondhjemite
1654
1688
I_
x
23
33
**
**
Rb-Sr
Rb-Sr
whole-rock
whole-rock
#284
#308
Rio Pueblo Schist
1680
U-Pb
P i c u r izsi r c o n
I
Mountains
sfcehl di sstp a t h i c
#305
San Andres Peak g r a n i t e
1388
r
**
K-Ar
biotite
San Andres Mountains
g r ga n ei tiiscs
# I 24
Taos Range
Taos Range
quartzite
quartzi te
#321
#340
San C r i s t o b a l q u a r t z i t e
1713
1775
i
*
**
Pb-Pb z i r c o n
Pb-Pb z i r c o n
UNIl
111
ROCK UNIT
San Diego Mtn gneiss
1407
**
Mountain
dioritic
Diego
whole-rock
gneiss
Rb-Sr
San
r
#i39
San Pedro leucogranodiorite
1840
T
170
**
77345
Rb-Sr
whole-rock
Nacimiento
Mountains
gneissic
granodiorite
San Pedro metavolcanics
1800
*
50
**
Rb-Sr whole-rock
Nacimiento
Mountains
quartz latite
#343
qtz diorite 8 qtz monzonite
quartz monzonite
#258
#331
orbicular granite
quartz monzonite
quartz monzonite
quartz monzonite
biotite monzonite
quartz monzonite
quartz monzonite
quartz monzonite
quartz monzonite
granite
orbicular granite
orbicular granite
quartz monzonite
granite
granite
granite
quartz monzonite
quartz monzonite
quartz monzonite
quartz monzonite
quartz monzonite
quartz monzonite
granite
quarrz monzonite
quartz monzonite
granite
-uranite
granulitic xenoliths
granite
granite
orbicular granite
# 17
# 53
# 60
# 68
# 70
# 78
# 79
# 86
# 87
# 88
# 90
# 91
# 97
#I 04
#I 17
#134
#158
# I 70
#182
#183
#187
#188
#198
#199
#200
#202
#203
#205
#208
#214
#227
apt i te
#168
granite
granite
# 96
San Pedro quartz monzonite
1615
1730
i
d
15
20
**
**
Rb-Sr whole-rock
U-Pbzircon
San
Pedro
San
Pedro
Mountains
Mountains
Sandia Granite
1128
1300
1310
1320
1321
1330
1330
1340
1340
1340
1342
1343
1350
1358
1380
1402
1430
1440
1455
1455
1460
1460
1470
1470
1470
1472
1475
1480
1480
1490
1517
t 44
.e
*
.t
28
.e
t
I
i
*
28
27
.e
i
I
1
20
f 40
z 20
I_
20
T 20
T 20
i
=
*
T
i
2
20
20
15
f
i 90
*
i
*
**
**
**
**
**
**
**
*
*
**
49
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
Rb-Sr
Rb-Sr
Rb-Sr
Rb-Sr
K-Ar
Rb-Sr
Rb-Sr
Rb-Sr
Rb-Sr
Rb-Sr
K-Ar
K-Ar
K-Ar
Rb-Sr
Ar-Ar
Pb-Pb
Rb-Sr
Pb-Pb
Pb-Pb
Pb-Pb
Pb-Pb
Pb-Pb
Pb-Pb
Pb-Pb
Rb-Sr
Pb-Pb
Rb-Sr
Pb-Pb
Pb-Pb
Rb-Sr
biotite
bi, whole-rock
bi, whole-rock
bi, hhole-rock
biotite
bi, whole-rock
bi, whole-rock
bi, whole-rock
bi, whole-rock
mica
biotite
biotite
bi, whole-rock
mica
whole-rock
muscovite
zircon
bi, whole-rock
zircon
zircon
zircon
zircon
sphene
zircon
zircon
whole-rock
zircon
whole-rock
sphene
sphene
whole-rock
Sandia
sandia
sandia
Sandia
Sandia
sandia
Sandia
Sandia
Sandia
Sandia
Sandia
Sandia
Sandia
Sandia
Sandia
sandia
Sandia
sandia
Sandia
Sandia
Sandia
Sandia
Sandia
Sandia
Sandia
Sandia
Sandia
Sandia
Sandia
Sandia
Sandia
Mountains
Mountains
Mountains
Mountains
Mountains
Mountains
Mountains
Mountains
Mountains
Mountains
Mountains
Mountains
Mountains
Mountains
Mountains
Mountains
Mounrains
Mountains
Mountains
Mountains
Mountains
Mountains
Mountains
Mountains
Mountains
Mountains
Mountains
Mountains
Mountains
Mountains
Mountains
Sandia Granite aplite
1439
**
T
Rb-Sr
Mountains
Sandia
muscovite
Sepultura granite
1350
1400
r
i
104
59
**
**
Rb-Sr *hole-rock
Rb-Sr whole-rock
Los Pinos
Mountains
Los Pinos
Mountains
#131
Sevilleta Metarhyolite Fm
~~
1338 t 3
1361 i 3
1366 I: 2
1438 I_ 5
1559 2 52
1625 f 49
1662 r 1
1680 =
**
**
**
**
**
**
**
Ar-Ar
Ar-Ar
Ar-Ar
Ar-Ar
Rb-Sr
Rb-Sr
U-Pb
U-Pb
muscovite
muscovite
muscovite
hornblende
whole-rock
whole-rock
zircon
zircon
Manzano
Mountains
Manzano Mountains
Manzano
Mountains
pelitic
schist
Manzano Mountains
Los Pinos Mountains
Los Pinos Mountains
Los Pinos
Mountains
felsic
Manzano Mountains
metarhyolite
pelitic schist
amphibolite
metarhyolite
metarhyolite
schist
schist
feldspathic
~~
# 84
#105
#110
#165
#243
#264
#297
#306
I
ROCK UNIT
112
Shakespeare Can m e t a r h y o l i t e
1664
J_
3
U-Pb
zircon
Magdalena Mountains
s c h i sf te l s i c
#299
Shamrock No. 1 McArthurgranite
1328
1397
x
**
E
K-Ar
Rb-Sr
muscovite
K-feldspar
Las Vegas basin
S i e r r a Grande arch
granite
granite
# 76
# I 29
Shiprock xenoliths
1720
* granite
5
schist,
gneiss,
U-Pb
Shiprock
zircon
#326
S i e r r a Grande No. 1 g r a n i r e
1314
*
**
Rb-Sr
S i eb
r ri ao t i t e
# 62
Grande
granitearch
Socony Mobil No. 95 g r a n i t e
1201
1397
*
**
**
i
Rb-Sr
Rb-Sr
K-feldspar
*hole-rack
Delaware
porphyry
granite
basin
Delaware
porphyry
granite
basin
# 28
#128
South Peak a l k a l i g r a n i t e
*
*
**
626
685 I
685
852 .c
1038 T
1214 2
1292 L
1439
**
**
**
**
**
**
*
**
Rb-Sr
Rb-Sr
Rb-Sr
Rb-Sr
Rb-Sr
Rb-Sr
Rb-Sr
Rb-Sr
whole-rock
*hole-rock
whole-rock
whole-rock
whole-rock
whole-rock
whole-rock
whole-rock
Florida
Florida
Florida
Florida
Florida
Florida
Florida
Florida
Mountains
Mountains
Mountains
Mountains
Mountains
Mountains
Mountains
Mountains
quartz syenite
a l k a l ig r a n i t e
a l k a l ig r a n i t e
a l k a l ig r a n i t e
a l k a l ig r a n i t e
a l k a l ig r a n i t e
a l k a l ig r a n i t e
a l k a l ig r a n i t e
#
I
# 3
# 4
# 7
# 15
# 30
# 50
#166
Stanolind No. 11-X g r a n i t e
**
1189 =
1211 r
**
K-Ar
Rb-Sr
biotite
whole-rock
Pecos slope
Delaware basin
granite
granite
# 26
# 29
Mountains
Oscura
graniric
gneiss
#263
Mountains
Oscura
Mountains
Oscura
granitic gneiss
granite gneiss
#103
quartzite
# 37
Sun No. 1 Bingham State gneiss
1625
**
x
Rb-Sr
K-feldspar
Sun No. 1 Bingham S t a t e g r a n i t
**
**
1358 r
1368 T
K-Ar
K-Ar
biotite
biotite
#112
Tolby Meadow t e c t o n i c unit
1258
L
1
**
AT-Ar
muscovite
Cimarron
Range
Tonuco Mtn gneiss
1368
**
=
K-Ar
biotite
San
Mountain
Diego
d i o r i t i c#I gneiss
13
Tres Lagunas metavolcanics
1720
*
Pb-Pb
galena
S. deSangre
C r i s t o Mtns
biotire
whole-rock
whole-rock
zircon
whole-rock
zircon
Tusas
Tusas
Tusas
Tusas
Tusas
Tusas
zircon
whole-rock
Tusas Mountains
Tusas Mountains
metavolcanic
felsic
#325
TresPiedrasGranite
1234
1462
1469
1621
1626
1650
r
d
i
i
*
19
21
43
15
17
i
**
**
**
**
**
**
K-Ar
Rb-Sr
Rb-Sr
U-Pb
Rb-Sr
U-Pb
Mountains
Mountains
Mountains
Mountains
Mountains
Mountains
granitic gneiss
quartz monzonite gneiss
quartz monzonite gneiss
granite
qtz monzonite gneiss
granite
#197
#262
#265
#281
granite
granite
# I 78
#238
# 32
#191
Tusas Mtn g r a n i t e
1449 t
1550 T 40
**
**
Pb-Pb
Rb-Sr
113
ROCK
Urraca Ranch gneiss
1585
**
I
U-Pb
zircon
Range
K/Ar
muscovite
muscovite
muscovite
muscovite
hornblende
whole-rock
muscovite
muscovite
biotite
biotite
min. separates
mu, whole-rock
Taos
f e l s i c gneiss
#252
S. Sangre de C r i s t o Mtns
Tusas Mountains
Tusas Mountains
Tusas Mountains
Tusas Mountains
S. Sangre de C r i s t o Mtns
Tusas Mountains
P i c u r i s Mountains
Tusas Mountains
Tusas Mountains
S. Sangrede C r i s t o Mtns
Tusas Mountains
qtz-musc s c h i s t
qtz-mu-feld schist
qtz-mu s c h i s t
qtz-mu s c h i s t
h b l - c h l - b is c h i s t
quartz-musc s c h i s t
pegmatite
pegmatite
h b l - c h l - b is c h i s t
qtz-mu-bischist
quartz-musc s c h i s t
f e l d s c h i s t & pegmatite
#
#
#
#
#
#
#
#
S. de
Sangre
amphibolite
#328
felsic schist
felsic schist
felsic schist
felsic
#1a6
#218
#223
#332
Vadito Group
~
1266
1272
1272
1307
1317
1319
1319
1335
1340
1343
1352
1425
*
**
42
* 19
19
i 20
I 15
42
T 20
L 20
3 20
L 21
T 24
2 15
**
**
**
**
**
**
**
**
**
**
**
K-Ar
K-Ar
K-Ar
K-Ar
Rb-Sr
K-Ar
K-Ar
K-Ar
K-Ar
Rb-Sr
Rb-Sr
39
42
43
58
64
65
66
81
# 89
# 92
# 99
#153
Vadito Group amphibolite
1730
i
**
110
Rb-Sr
whole-rock
C r i s t o Mtns
Vadito Group s c h i s t
**
1460 t
1495
1501 t
1739 r
**
**
**
Rb-Sr
Rb-Sr
Rb-Sr
Rb-Sr
whole-rock
Picuris
Mountains
whole-rock
P i c u r i s Mountains
whole-rock
Picuris
Mountains
whole-rock
P i c u r i s Mountainss c h i s t
Rb-Sr
whole-rock
San Andres Mountains
granodiorite
gneiss
zircon
de
S. Sangre
White Mine gneiss
1430
**
I.
#157
Windy B r i d g e t o n a l i t e
1718
T
5
U-Pb
C r i s t o Mtns
tonalite
#322
Zuni f e l s i c m e t a v o l c a n i c s
1655
I
:
schistfelsic
Mountains
U-Pb
Zuni zircon
#288
Zuni g r a n i t e
1655 T
granite Mountains
Zuni U-Pb
zircon
#zag
Zuni unknown unit
1440 t 10
1650
5
1700
5
*
*
**
**
**
U-Pb
U-Pb
U-Pb
zircon
zircon
zircon
Mountains
Zuni
ZuniMountains
San Pedro Mountains
granite
felsic schists
granite
metarhyolite,
#172
#282
#318
UNIT
114
PART V
List of isotopic age determinations by county
COuNTy
AGE
(**)
METHOD
** = significanceof age is uncertain
MATERIAL
MTN RANGE
ROCK UNIT
RECORD #
115
COUNTY
Bernalillo
1128
1300
1310
1320
1321
1340
1342
1343
1380
1384
1392
1423
1424
1430
1439
1440
1450
1455
1455
1460
1460
1470
1470
1470
1472
1475
1480
1480
1490
1517
1576
**
Rb-Sr
Rb-Sr
Rb-Sr
Rb-Sr
K-Ar
Rb-Sr
K-Ar
K-Ar
Rb-Sr
K-Ar
K-Ar
Ar-Ar
K-Ar
Pb-Pb
Rb-Sr
Rb-Sr
Rb-Sr
Pb-Pb
Pb-Pb
Pb-Pb
Pb-Pb
Pb-Pb
Pb-Pb
Pb-Pb
Rb-Sr
Pb-Pb
Rb-Sr
Pb-Pb
Pb-Pb
Rb-Sr
Rb-Sr
biotite
bi, whole-rock
bi, whole-rock
bi, whole-rock
biotite
bi, whole-rock
biotite
biotite
whole-rock
muscovi te
muscovi te
muscovite
muscovite
zircon
muscovite
bi, whole-rock
muscovi re
zircon
zircon
zircon
zircon
sphene
zircon
zircon
whole-rock
zircon
whole-rock
sphene
sphene
khole-rock
whole-rock
Rb-Sr
K-Ar
Rb-sr
whole-rock
muscovi re
K-feldspar
K-Ar
Rb-Sr
U-Pb
Rb-Sr
U-Pb
U-Pb
zircon
U-Pb
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
Sandia Granite
sandia Granite
Sandia Granite
sandia Granite
Sandia Granite
Sandia Granite
Sandia Granite
sandia Granite
Sandia Granite
Juan Tabo Series
Rincon pegmatite
Cibola quartzite
Rincon pegmatite
Sandia Granite
Sandia Granite aplite
Sandia Granite
Monte
LargolSandia
schist
Sandia
Sandia
Sandia Granite
Sandia Granite
Sandia Granite
Sandia Granite
Sandia Granite
Sandia Granite
Sandia Granite
Sandia Granite
Sandia Granite
Sandia Granite
Sandia Granite
Cibola Gneiss
#
#
#
#
#
#
#
#
Pecos slope
Pecos slope
Pecos slope
Continental No. 1 Langford schist
Continental No. 1 Langford schist
De Kalb No. 1 Lewis granite
# 44
# 95
whole-rock
whole-rock
zircon
whole-rock
zircon
zircon
Zuni
Zuni
Zuni
Zuni
Zuni
Zuni
Zuni
Ice Caves diabase dike
Post Office Flat metarhyolite
Zuni unknown unit
Mirabel
Zuni unknown unit
Zuni felsic
metavolcanics
Zuni granite
# 9
Ar-Ar
Ar-Ar
K-Ar
Ar-Ar
Ar-Ar
Ar-Ar
U-Pb
U-Pb
Rb-Sr
Rb-Sr
Ar-Ar
muscovite
muscovite
muscovite
muscovite
hornblende
hornblende
monazite
zircon
whole-rock
whole-rock
hornblende
Cimarron Range
Cimarron Range
Taos Range
Cimarron Range
Cimarron Range
Cimarron Range
Cimarron Range
Cimarron Range
Cimarron Range
Cimarron Range
Cimarron Range
Tolby Meadow tectonicunit
Eagle Nest tectonic unit
Old Mike Peak quartz monzonite
Cimarron River tectonic unit
Eagle Nest tectonic unit
Eagle Nest tectonic unit
Eagle Nest tectonic unit
Eagle Nest rectonic unit
Eagle Nest felsic gneiss
Eagle Nest granite
Clear Creek quartz-diorite
# 37
Rb-Sr
Rb-Sr
I(-Ar
Pb-Pb
K-Ar
Rb-Sr
U-Pb
whole-rock
whole-rock
biotite
zircon
biotite
whole-rock
zircon
San Andres Mountains
San Andres Mountains
San Diego Mountain
Kilbourne Hale
San Andres Mountains
san DiegoMountain
San Andres Mountains
Mayberry Pluton
Mineral Hill Pluton
Tonuco Mtn gneiss
Kilbourne Hole xenolith
San Andres Peak granite
San Diego Mtngneiss
Mineral Hill Pluton
Chaves
1273
1348
1387
**
**
**
Sandia
Sandia
Sandia
Sandia
Sandia
Sandia
Sandia
Sandia
Sandia
Sandia
Sandia
Sandia
Sandia
Sandia
Sandia
Sandia
Sandia
Sandia
Sandia
Sandia
Sandia
Sandia
Sandia
Sandia
Sandia
Sandia
Sandia
Sandia
Sandia
Sandia
Sandia
Mountains
Mountains
Mountains
Mountains
Mountains
Mountains
Mountains
Mountains
Mountains
Mountains
Mountains
Mountains
Mountains
Mountains
Mountains
Mountains
Mountains
MountainsGranite
MountainsGranite
Mountains
Mountains
Mountains
Mountains
Mountains
Mountains
Mountains
Mountains
Mountains
Mountains
Mountains
Mountains
17
53
60
68
70
87
90
91
#I 17
#122
#125
#150
#152
#158
#168
#I 70
#I 79
#182
#183
#187
#188
#198
#199
#200
#202
#203
#205
#208
#214
#227
#249
-
#I 23
Cibola
951
1380
1440
1490
1650
1655
1655
**
**
**
**
**
Mountains
Mountains
Mountains
Mountains
Mountains
Mountains
Mountains
"aplite"
#118
#172
#213
#282
#288
#289
Colfax
1258
1268
1326
1350
1394
1401
1430
1430
1467
1488
1692
**
**
**
**
**
**
**
**
Doha Ana
1243
1294
1368
1375
1388
1407
1462
**
**
**
**
**
**
# 40
# 74
# 98
#I 26
#133
#159
#160
#196
#211
#311
# 33
# 51
#I 13
#115
#124
#139
#I92
116
1568
1632
1730
1890
1990
2040
**
COUNTY
Rb-Sr
U-Pb
U-Pb
Rb-Sr
Rb-Sr
Rb-Sr
whole-rock
zircon
zircon
whole-rock
Kilbourne
Hole
whole-rock
whole-rock
San AndresMountains
San AndresMountains
San Andres
Mountains
**
Rb-Sr
Rb-Sr
biotite
feldspar
Delaware basin
Delaware basin
Humble No. 1 Huapache g r a n i t e
Humble No. 1 Huapache g r a n i t e
#101
#130
**
K-Ar
**
biotite
biotite
biotite
biotite
biotite
zircon
zircon
zircon
Big Burro Mountains
Big Burro Mountains
Big Burro Mountains
Big Burro Mountains
Big Burro Mountains
Big Burro Mountains
Big Burro Mountains
Big Burro Mountains
Hombrook Mtn g r a n i t e
Burro Mtn g r a n i t e
Burro Mtn g r a n o d i o r i t e
B u l l a r d Peak Series
B u l l a r d Peak Series
B u l l a r d Peak Series
B u l l a r d Peak Series
B u l l a r d Peak Series
#
Rb-Sr
K-Ar
K-Ar
K-Ar
Pb-Pb
U-Pb
Pb-Pb
Rb-Sr
K-Ar
Rb-Sr
whole-rock
Husky-General
Tucumcari
basin
biotite
whole-rock
Great Plains Province
Tucumcari basin
C i t iSeesr v i c e
C i t iseesr v i c e
Pb-Pb
Pb-Pb
Pb-Pb
U-Pb
U-Pb
Pb-Pb
K-Ar
zircon
zircon
zircon
zircon
zircon
zircon
biotite
Big Burro
Big Burro
Big Burro
Big Burro
Big Burro
Big Burro
Big Burro
Burro
Burro
Burro
Burro
Burro
Burro
Burro
Rb-Sr
K-Ar
Rb-Sr
Rb-Sr
Rh-Sr
biotite
biotite
K-feldspar
whole-rock
whole-rock
Delaware basin
Pecos slope
Delaware basin
Delaware basin
Delaware basin
Continental No. I - E gneiss
Stanolind No. 11-X g r a n i t e
Socony Mobil 95
No.
granite
s t a n o l i n d No. 11-X g r a n i t e
Socony Mobil No. 95 g r a n i t e
#
#
#
#
Rb-Sr
K-Ar
whole-rock
muscovite
Oscura Mountains
OscuraMountains
Mockingbird Gap p l u t o n
Oscura Pluton
# 93
**
**
**
**
**
**
**
**
Rb-Sr
Rb-Sr
Rb-Sr
Rb-Sr
Rb-Sr
Rb-Sr
Rb-Sr
Rb-Sr
Rb-Sr
Pb-Pb
Pb-Pb
Pb-Pb
U-Pb
whole-rock
whole-rock
whole-rock
whole-rock
whole-rock
whole-rock
whole-rock
whole-rock
whole-rock
zircon
zircon
zircon
zircon
F l o r i d a Mountains
F l o r i d a Mountains
F l o r i d a Mountains
F l o r i d a Mountains
F l o r i d a Mountains
F l o r i d a Mountains
F l o r i d a Mountains
F l o r i d a Mountains
F l o r i d a Mountains
F l o r i d a Mountains
gneiss
F l o r i d a Mountains
gneiss
FLorida Mountains
gneiss
F l o r i d a Mountains
gneiss
South Peak a gl kr a lni i t e
South Peak a gl kr a lni i t e
South Peak a gl kr a lni i t e
South Peak a gl kr a lni i t e
South Peak a l kg ar al in i t e
South Peak a l kgar al i n i t e
South Peak a l kgar al in i t e
South Peak a gl kr a lni i t e
F l o r i d a Mtns g r a n i t e
Florida
Florida
Florida
Florida
**
**
**
Rb-Sr
Rb-Sr
K/Ar
min. separates
whole-rack
muscovite
S. Sangre de C r i s t o Mtns
Rinconada
Formation
# 31
Sangre de C r i s t o Mtns
S. Sangre de C r i s t o Mtns
# 36
# 39
**
**
**
**
Kilbourne Hole
Kilbourne Hole
Mineral Hill P l u t o n
Mayberry p l u t o n
L i t t l e San Nicolas
gneiss
Kilbourne Hole xenolith
Kilbourne Hole xenolith
xenolith
Kilbourne
Hole
#246
#270
#329
#346
#349
#350
Eddy
1356
1397
**
Grant
950
1270
1380
1410
1410
1542
1550
1567
**
**
**
**
**
**
8
# 41
# I 19
#141
#142
#235
#240
#245
Guadalupe
~~~~
1139
1358
1666
**
**
**
No. 1 g r a n i t e
No. 1 g r a n i t e
No. 1 g r a n i t e
# 18
#102
#300
Hidalgo
1437
1437
1444
1445
1500
1505
1550
**
**
**
**
**
**
Mountains
Mountains
Mountains
Mountains
Mountains
Mountains
Mountains
granite
granite
granite
granite
diabase
Mtn diabase
Mtn g r a n i t e
Mtn
Mtn
Mtn
Mtn
Mtn
# I 62
# I 63
#175
# I 76
#221
#225
#239
Lea
1139
1189
1201
1211
1397
**
**
**
**
**
19
26
28
29
#128
Lincoln
1346
1368
**
**
#111
Luna
626
685
685
852
1038
1214
1292
1439
1530
1554
1556
1570
1610
**
**
**
**
**
#
I
# 3
# 4
# 7
# 15
# 30
# 50
#166
#233
#241
#242
#248
#257
Mora
1230
1253
1266
S.
RinconadaFormation
Vadito Group
117
1286
1310
1319
1320
1328
1338
1352
1384
1397
1490
1630
1640
1691
1730
**
**
**
**
**
**
**
**
**
**
**
**
**
Rb-Sr
Rb-Sr
Rb-Sr
K-Ar
K-Ar
Rb-Sr
Rb-Sr
Rb-Sr
Rb-Sr
Rb-Sr
Rb-Sr
U-Pb
Rb-Sr
min. separates
whole-rock
whole-rock
muscovite
muscovite
mica
min. separates
whole-rock
K-feldspar
mica
whole-rock
whole-rock
zircon
whole-rock
Rb-Sr
K-Ar
K-Ar
f ePM
ladoP
jsgaua
prna
ji atn
roariirtneo
r i e bPeM
acjokaPuirtan
ietjtoaariint o
hornblende
Pajarito
Mountain
Pajarito
K-Ar
K-Ar
K-Ar
K-Ar
K-Ar
K-Ar
K-Ar
K-Ar
Rb-Sr
Rb-Sr
Pb-Pb
U-Pb
Rb-Sr
Rb-Sr
Rb-Sr
Rb-Sr
U-Pb
Rb-Sr
U-Pb
Rb-Sr
Rb-Sr
U-Pb
U-Pb
U-Pb
U-Pb
U-Pb
U-Pb
Rb-Sr
Rb-Sr
biotite
muscovite
muscovite
muscovi t e
hornblende
muscovi t e
biotite
biotite
whole-rock
mu, whole-rock
zircon
zircon
whole-rock
whole-rock
whole-rock
whole-rock
zircon
whole-rack
z i rmn
whole-rock
whole-rock
zircon
zircon
zircon
zircon
zircon
zircon
whole-rock
whole-rock
K-Ar
COUNTY
S. Sangrede C r i s t o Mtns
S. Sangre de C r i s t o Mtns
S. Sangrede C r i s t o Mtns
s. Sangrede C r i s t o Mtns
Las Vegas basin
S. Sangrede C r i s t o
S. Sangrede C r i s t o
S. Sangrede C r i s t o
S i e r r a Grande arch
S. Sangrede C r i s t o
S. Sangre de C r i s t o
S. Sangre de C r i s t o
S. Sangre de C r i s t o
S. Sangre de C r i s t o
Mtns
Mtns
Mtns
Mtns
Mtns
Mtns
Mtns
Mtns
Pecos Complex
Pecos complex
Vadito Group
Pecos Complex
Shamrock No. 1 McArthur g r a n i t e
P i d l i t e pegmatite
Vadito Group
Pecos Complex
Shamrock No. 1 McArthur g r a n i t e
P i d l i t e pegmatite
Pecos Complex
Pecos Complex
Pecos Baldy quartz porphyry
Vadito Group amphibolite
# 47
# 61
# 65
# 69
# 76
# 85
# 99
#121
# I 29
#212
#268
#273
#310
#328
granite^
Mtn pegmatite
# 21
# 22
# 27
Otero
1175
1180
1200
**
**
**
Rio Arriba
1234
1272
1272
1307
1317
1319
1340
1343
1365
1425
1449
1460
1467
1469
1550
1615
1621
1626
1650
1654
1688
1700
1700
1700
1730
1755
1755
1800
1840
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
T U S ~ S Mountains
Tusas Mountains
Tusas Mountains
Tusas Mountains
Tusas Mountains
Tusas Mountains
Tusas Mountains
Tusas Mountains
S. Sangre de C r i s t o Mtns
Tusas Mountains
Tusas Mountains
Nacimiento Mountains
Tusas Mountains
Tusas Mountains
Tusas Mountains
San PedroMountains
Tusas Mountains
Tusas Mountains
Tusas Mountains
Tusas Mountains
Tusas Mountains
Tusas Mountains
Tusas Mountains
San PedroMountains
sanPedroMountains
Tusas Mountains
Tusas Mountains
Nacimiento Mountains
Nacimiento Mountains
Piedras
Granite
Tres
Vadito Group
Vadito Group
Vadito Group
Vadito Group
Vadito Group
Vadito Group
Vadito Group
Embudo g r a n i t e
Vadito Group
Tusas Mtn g r a n i t e
Joaquin quartz monzonite
Hopewell Lake g r a n i t e
Tres Piedras Granite
Tusas Mtn g r a n i t e
San Pedro quartz monzonite
Tres Piedras Granite
Tres Piedras Granite
Tres Piedras Granite
Rio Brazos trondhjemite
Rio Brazos trondhjemite
BurnedMtnFormation
BurnedMtnFormation
?
Zuni unknown u n i t
San Pedro quartz monzonite
OrtegaFormation
Maquinita Granodiorite
San Pedro metavolcanics
San Pedro leucogranodiorite
# 32
# 42
# 43
# 58
# 64
# 66
# 89
# 92
#108
#153
#178
#190
#195
#197
#238
#258
#262
#265
#281
#284
#308
#316
#317
#318
#33 1
#335
#336
#343
#345
San Juan
1720
U-Pb
Shiprockzircon
xenolithsShiprock
#326
San Miguel
1480
1650
1650
1710
1718
1720
**
**
**
U-Pb
U-Pb
U-Pb
Pb-Pb
U-Pb
Pb-Pb
zircon
zircon
zircon
galena
zircon
galena
S.
S.
S.
S.
S.
Rb-Sr
Rb-Sr
Rb-Sr
Rb-Sr
bi,whole-rock
bi.whole-rock
bi;whole-rock
mica
bi,whole-rock
sandia Mountains
sandia Mountains
SandiaMountains
SandiaMountains
SandiaMountains
Sangre
de
Sangre
de
Sangre
de
Sangre
de
Sangre
de
S. Sangre
de
Cristo
Cristo
Cristo
Cristo
Cristo
Cristo
Mtns
Mtns
Mtns
Mtns
Mtns
Mtns
Macho Creek g r a n i t e
I n d i a n Creek g r a n i r e
I n d i a n Creek g r a n i t e ?
Pecos mine
orebody
Windy B r i d g et o n a l i t e
Tres Lagunas metavolcanics
#207
#279
#280
#320
#322
#325
Sandia
Sandia
Sandia
Sandia
Sandia
#
#
#
#
#
Sandoval
1330
1330
1340
1340
1350
**
**
**
-*
**
Granite
Granite
Granite
Granite
Granite
78
79
86
88
97
118
1358
1402
1407
1440
1465
1500
1500
1518
1520
1520
1550
1583
1620
1640
1830
1920
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
K-Ar
Ar-Ar
Rb-Sr
Rb-Sr
Pb-Pb
Rb-Sr
Pb-Pb
Pb-Pb
Rb-Sr
Pb-Pb
Rb-Sr
Pb-Pb
Rb-Sr
Rb-Sr
Rb-Sr
Rb-Sr
mica
muscovite
whole-rock
whole-rock
z i rcon
whole-rock
sphene
epidote
muscovite
epidote
whole-rock
epidote
whole-rock
whole-rock
whole-rock
whole-rock
SandiaMountains
SandiaMountains
SandiaMountains
Jemez Mountains
Jemez Mountains
Jemez Mountains
Jemez Mountains
Jemez Mountains
SandiaMountains
Jemez Mountains
Jemez Mountains
Jemez Mountains
Jemez Mountains
Sandia Mountains
Jemez Mountains
Jemez Mountains
Rb-Sr
Rb-Sr
Rb-Sr
Rb-Sr
Rb-Sr
Rb-Sr
Rb-Sr
U-Pb
U-Pb
U-Pb
whole-rock
hhole-rock
whole-rock
whole-rock
whole-rock
hhole-rock
hhole-rock
zircon
zircon
zircon
S.
S.
S.
S.
S.
S.
COUNTY
Sandia Granite
Sandia Granite
Juan Tab0 pegmarites
GT-2, EE-1, EE-2 dikes
GT-2 g r a n o d i o r i t e
GT-2 and EE-2 g r a n o d i o r i t e
GT-2 g r a n o d i o r i t e
GT-2 g r a n o d i o r i t e
Juan Tab0 Series
GT-2 g r a n o d i o r i t e
EE-2 manzogranite
GT-2 granodiorite
GT-2 and E E - 1 monzogranite
Juan Tab0 s e r i e s
GT-1 amphibolite
GT-1 amphibolite
# I 04
Embudo g r a n i t e
Embudo g r a n i t e
Embudo g r a n i t e
Embudo g r a n i t e
Embudo g r a n i t e
Embudo g r a n i t e
Embudo g r a n i t e
Dalton Canyon succession
Dalton Canyon succession
Jones r h y o l i t e complex
# 24
#I
14
#i34
#i37
#169
#194
#220
#222
#228
#229
#230
#236
#250
#260
#272
#344
#348
Santa Fe
1185
1372
1412
1457
1464
1492
1534
1650
1660
1720
**
**
**
**
**
**
**
S.
S.
S.
S.
Sangre d e C r i s t o
Sangrede C r i s t a
Sangre de C r i s t o
Sangre d e C r i s t o
Sangrede C r i s t o
Sangre de C r i s t a
Sangre d e C r i s t o
Sangre de C r i s t o
Sangre de C r i s t o
Sangre d e C r i s t o
Mtns
Mtns
Mtns
Mtns
Mtns
Mtns
Mtns
Mtns
Mtns
Mtns
#143
#184
#193
#215
#234
#278
#294
#323
Sierra
1304
1325
1408
1430
1608
1647
1655
**
Rb-Sr
**
Rb-Sr
K-Ar
Rb-Sr
Pb-Pb
Pb-Pb
**
**
**
**
**
whole-rock
Caballo
Mountains
Caballo
Granite
hhole-rock
biotite
whole-rock
zircon
Black
zircon
zircon
San Andres
Mountains
San Andres
Mountains
San Andres
Mountains
Black Range
Range
Black Range
Rb-Sr
whole-rock
San Andres/Oscura
Mtns
Mockingbird Gap p l u t o n
# 14
Rb-Sr
Rb-Sr
Rb-Sr
Rb-Sr
Rb-Sr
whole-rock
whole-rock
whole-rock
whole-rock
whole-rock
whole-rock
biotite
biotite
whole-rock
whole-rock
whole-rock
apatite
whole-rock
whole-rock
whole-rock
whole-rock
K-feldspar
whole-rock
zircon
zircon
zircon
zircon
zircon
zircon
zircon
sphene
zircon
LadronMountains
LadronMountains
Magdalena Mountains
LadronMountains
Magdalena Mountains
Los PinosMountains
OscuraMountains
OscuraMountains
Los PinosMountains
Los PinosMountains
Magdalena Mountains
Los PinosMountains
Los Pinos Mountains
Magdalena Mountains
Los PinosMountains
Los PinosMountains
OscuraMountains
Los PinosMountains
LemitarMountains
Los PinosMountains
Magdalena Mountains
Los PinosMountains
Los PinosMountains
Chupadera Mountains
Los PinosMountains
Los PinosMountains
Los PinosMountains
Capirote Granite
Ladron metavolcanic sequence
Magdalena Granite
Ladron Granite
Magdalena Granite
sepulturagranite
Sun No. 1 Bingham S t a r e g r a n i t e
Sun No. 1 Bingham S t a t e g r a n i t e
Los Pinos granite
Sepultura granite
Magdalena Granite
Bootleg Canyon sequence
Los Pinos granite
Garcia Canyon metagabbro
S e v i l l e t a M e r a r h y o l i t e Fm
Los Pinos granite
Sun NO. 1 Bingham Stategneiss
S e v i l l e t a M e t a r h y o l i t e Fm
Lemitar granite
Los Pinos granite
Magdalena Granite
Los Pinos granite
Bootkeg Canyon a p l i t e
Chupadera g r a n i t e
Bootleg Canyon sequence
Bootleg Canyon sequence
S e v i l l e t a M e t a r h y o l i t e Fm
# 12
# 20
# 35
# 49
# 75
# 96
#103
#112
U-Pb
Sierra, Sac.,
1013
**
C a p i t o l Peak Pluton
Rhodes
Canyon
granodiorite
White Mine gneiss
gSr a
P
pn
ri ciintkegest t
Pickett Springs granite
gSr a
P
pn
ri ciintkegest t
# 56
# 72
#140
#157
#256
#276
#287
Linc.
socorro
986
1143
1247
1291
1327
1350
1358
1368
1380
1400
1420
1450
1480
1485
1559
1601
1625
1625
1648
1653
1654
1655
1658
1659
1660
1660
1662
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
Rb-Sr
K-Ar
K-Ar
Rb-Sr
Rb-Sr
Rb-Sr
U-Pb
Rb-Sr
Rb-Sr
Rb-Sr
Rb-Sr
Rb-Sr
Rb-Sr
U-Pb
U-Pb
U-Pb
U-Pb
U-Pb
U-Pb
U-Pb
U-Pb
U-Pb
#116
#131
#147
#180
#206
#210
#243
#254
#263
#264
#277
#283
#285
#290
#292
#293
#295
#296
#297
119
1664
1664
U-Pb
U-Pb
zircon
zircon
Magdalena Mountains
Magdalena Mountains
COUNTY
metarhyolite
Baldy
North
Shakespeare Can m e t a r h ytoel i
#298
#299
Socorro, L i n c o l n
1338
**
Rb-Sr
Mountains
Oscura
whole-rock
Oscura P l u t o n
# 83
Comanche Point gabbro
HardingPegmatite
L a t i r Creek q u a r t z i t e
Cedro Canyon gneiss
Cedro Canyon q u a r t z i t e
HardingPegmatite
Rana Quartz Monzonite
Peiiasco Quartz Monzonite
HardingPegmatite
HardingPegmatite
RinconadaFormation
HardingPegmatite
HardingPegmatite
HardingPegmatite
HardingPegmatite
HardingPegmatite
Cedro Canyon amphibolite
HardingPegmatite
Glenwoody Formation
Embudo g r a n i t e
Harding Pegmatite
L a t i r Creek amphibolite
Harding Pegmatite
Harding Pegmatite
Vadito Group
HardingPegmatite
HardingPegmatite
HardingPegmatite
HardingPegmatite
HardingPegmatite
HardingPegmatite
HardingPegmatite
Peiiasco Quartz Monzonite
HardingPegmatite
HardingPegmatite
Glenwoody Fm pegmatite
RinconadaFormation
HardingPegmatite
HardingPegmatite
Glenwoody Fm pegmatite
RinconadaFormation
Puntiagudo Granite Porphyry
Glenwoody Fm pegmatite
RinconadaFormation
Glenwoody Formation
HardingPegmatite
HardingPegmatite
Peiiasco Quartz Monzonite
HardingPegmatite
RinconadaFormation
Vadito Group s c h i s t
Peiiasco Quartz Monzonite
Tres Piedras Granite
Harding Pegmatite
Harding Pegmatite
Harding Pegmatite
Vadito Group s c h i s t
Harding Pegmatite
Vadito Group s c h i s t
HardingPegmatite
HardingPegmatite
HardingPegmatite
Puntiagudo Granite Porphyry
HardingPegmatite
#
#
#
#
#
#
#
#
#
#
#
#
#
Taos
670
718
960
964
1005
1121
1183
1186
1246
1264
1273
1281
1286
1295
1300
1304
1306
1309
1316
1319
1324
1326
1329
1332
1335
1336
1348
1353
1362
1366
1382
1396
1400
1406
1406
1407
1413
1416
1422
1422
1424
1427
1430
1435
1438
1441
1441
1448
1654
1457
1460
1460
1462
1476
1481
1494
1495
1497
1501
1502
1510
1529
1550
1565
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
Rb-Sr
Rb-Sr
Ar-Ar
Ar-Ar
Ar-Ar
Rb-Sr
Rb-sr
Rb-Sr
Rb-Sr
Rb-Sr
K-Ar
Rb-Sr
Rb-Sr
Rb-Sr
Rb-Sr
Rb-Sr
Ar-Ar
K-Ar
K-Ar
K-Ar
Rb-Sr
Ar-Ar
Rb-Sr
Rb-Sr
K-Ar
Rb-Sr
Rb-Sr
Rb-Sr
Rb-Sr
Rb-Sr
Rb-Sr
Rb-Sr
Rb-Sr
Rb-Sr
Rb-Sr
Rb-Sr
Rb-Sr
Rb-Sr
Rb-Sr
Rb-Sr
Rb-Sr
Rb-Sr
Rb-Sr
Rb-Sr
Rb-Sr
Rb-sr
Rb-Sr
U-Pb
Rb-Sr
Rb-Sr
Rb-Sr
U-Pb
Rb-Sr
Rb-Sr
Rb-Sr
Rb-Sr
Rb-Sr
Rb-Sr
Rb-Sr
Rb-Sr
Rb-Sr
Rb-Sr
Rh-Sr
Rb-Sr
whole-rock
microcline
muscovi t e
muscovite
muscovite
perthite
bi-feld-w.r.
bi-feld-w.r.
lepidolite
rose muscovite
muscovite
whole-rock
whole-rock
muscovi t e
mica
whole-rock
hornblende
mica
muscovite
muscovite
muscovite
hornblende
lepidolite
whole-rock
muscovite
whole-rock
whole-rock
lepidolite
mica
cleavelandite
mica
cleavelandite
whole-rock
cleavelandite
cleavelandite
whole-rock
whole-rock
whole-rock
lepidolite
whole-rock
whole-rock
whole-rock
whole-rock
whole-rock
whole-rock
lepidolite
K-feldspar
zircon
muscovite
whole-rock
whole-rock
zircon
whole-rock
K-feldspar
mica
muscovite
whole-rock
cleavelandite
whole-rock
muscovite
muscovite
muscovite
whole-rock
cleavelandite
Taos Range
P i c u r i s Mountains
TaosRange
TaosRange
TaosRange
P i c u r i s Mountains
P i c u r i s Mountains
P i c u r i s Mountains
P i c u r i s Mountains
P i c u r i s Mountains
P i c u r i s Mountains
P i c u r i s Mountains
P i c u r i s Mountains
P i c u r i s Mountains
P i c u r i s Mountains
P i c u r i s Mountains
Taos Range
P i c u r i s Mountains
P i c u r i s Mountains
P i c u r i s Mountains
P i c u r i s Mountains
TaosRange
P i c u r i s Mountains
P i c u r i s Mountains
P i c u r i s Mountains
P i c u r i s Mountains
P i c u r i s Mountains
P i c u r i s Mountains
P i c u r i s Mountains
P i c u r i s Mountains
P i c u r i s Mountains
P i c u r i s Mountains
P i c u r i s Mountains
P i c u r i s Mountains
P i c u r i s Mountains
P i c u r i s Mountains
P i c u r i s Mountains
P i c u r i s Mountains
P i c u r i s Mountains
P i c u r i s Mountains
P i c u r i s Mountains
P i c u r i s Mountains
P i c u r i s Mountains
P i c u r i s Mountains
P i c u r i s Mountains
P i c u r i s Mountains
P i c u r i s Mountains
P i c u r i s Mountains
P i c u r i s Mountains
P i c u r i s Mountains
P i c u r i s Mountains
P i c u r i s Mountains
Tusas Mountains
Picuris Mountains
P i c u r i s Mountains
P i c u r i s Mountains
P i c u r i s Mountains
P i c u r i s Mountains
P i c u r i s Mountains
P i c u r i s Mountains
P i c u r i s Mountains
P i c u r i s Mountains
P i c u r i s Mountains
P i c u r i s Mountains
2
5
10
11
13
16
23
25
34
38
45
46
48
# 52
# 54
# 55
# 57
# 59
# 63
# 67
# 71
#73
# 77
# 80
# 81
# 82
# 94
#100
#106
#109
#120
# I 27
#132
#135
#136
#138
#144
#145
#148
#149
#151
#154
#156
#161
#164
#173
#I 74
#177
#181
#185
#186
#189
#191
#204
#209
#217
#218
#219
#223
#224
#226
#232
#237
#244
120
1584
1585
1598
1608
1616
1621
1627
1628
1630
1638
1643
1644
1655
1668
1673
1674
1678
1680
1684
1689
1699
1700
1700
1700
1708
1713
1720
1727
1730
1739
1741
1750
1765
1765
1769
1775
1780
1793
1899
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
Rb-Sr
U-Pb
Rb-Sr
Rb-Sr
Rb-Sr
Rb-Sr
Rb-Sr
Rb-Sr
U-Pb
Rb-Sr
U-Pb
U-Pb
Rb-Sr
Pb-Pb
Rb-Sr
U-Pb
U-Pb
U-Pb
U-Pb
U-Pb
U-Pb
U-Pb
U-Pb
U-Pb
Rb-Sr
Pb-Pb
U-Pb
Pb-Pb
U-Pb
Rb-Sr
U-Pb
U-Pb
Pb-Pb
U-Pb
Pb-Pb
Pb-Pb
U-Pb
U-Pb
Rb-Sr
whole-rock
zi rcon
whole-rack
whole-rock
lepidolite
whole-rock
whole-rock
whole-rock
zircon
whole-rock
zircon
zircon
whole-rock
zircon
whole-rock
zircon
zircon
zircon
zircon
zircon
zircon
zircon
zircon
zircon
*hole-rock
zircon
zircon
zircon
zircon
whole-rock
zircon
zircon
zircon
zircon
zircon
zircon
zircon
zircon
cleavelandite
Picuris
P i c u r i s Mountains
TaosRange
P i c u r i s Mountains
S. Sangre de C r i s t o
P i c u r i s Mountains
S. Sangre de C r i s t o
P i c u r i s Mountains
S. Sangre de C r i s t o
P i c u r i s Mountains
S. Sangre de C r i s t o
Tam Range
TaosRange
Picuris Mountains
P i c u r i s Mountains
P i c u r i s Mountains
P i c u r i s Mountains
Taos Range
P i c u r i s Mountains
P i c u r i s Mountains
Taos Range
Taos Range
P i c u r i s Mountains
P i c u r i s Mountains
P i c u r i s Mountains
P i c u r i s Mountains
TaosRange
TaosRange
P i c u r i s Mountains
TaosRange
P i c u r i s Mountains
TaosRange
TaosRange
P i c u r i s Mountains
TaosRange
P i c u r i s Mountains
TaosRange
P i c u r i s Mountains
Picuris Mountains
Mountains
COUNTY
Mtns
Mtns
Mtns
Mtns
Glenwoody Formation
Urraca Ranch gneiss
Glenwoody Formation
Rana Quartz Monzonite
Harding Pegmatite
Embudo g r a n i t e
Glenwoody Formation
Embudo g r a n i t e
Cerro Alto Metadacite
Embudo g r a n i t e
Jarosa Canyon gneiss
C o s t i l l a Ck qtz monzonite
HardingPegmatite
OrtegaFormation
Rana Quartz Monzonite
Rana Quartz Monzonite
J a r a c i t o Canyon g r a n o d i o r i t e
Rio Pueblo Schist
Puntiagudo Granite Porphyry
HondoCanyon g r a n o d i o r i t e
Frazier Mtn qtz monzonite
Glenwoody Formation
Rana Quartz Monzonite
Puntiagudo Granite Porphyry
Glenwoody Formation
San C r i s t o b a l q u a r t z i t e
Comanche P o i n t f e l d . s c h i s t
OrtegaFormation
Columbine Ck qtz monzonite
Vadito Group s c h i s t
Gold Hill m e t a d i o r i t e
Red R i v e r t o n a l i t e
OrtegaFormation
Gold Hill Complex
OrtegaFormation
San C r i s t o b a l q u a r t z i t e
OrtegaFormation
OrtegaFormation
Harding Pegmatite
#25 1
#252
#253
#255
#259
#261
#266
#267
#269
#271
#274
#275
#286
#301
#302
#303
#304
#305
#307
#309
#312
#313
#314
#315
#319
#321
#324
#327
#330
#332
#333
#334
#337
#338
#339
#340
#341
#342
#347
Rana
Monzonite
Quartz
#171
Taos, RioArriba
1440
**
Rb-Sr
whole-rock
Picuris
Mountains
Torrance
848
1364
1416
1471
1493
1527
1680
**
**
**
**
**
**
**
K-Ar
whole-rock
Rb-Sr
whole-rock
Rb-Sr
whole-rock
Pedernal
Rb-Sr
whole-rock
Pedernal
whole-rock
Rb-Sr
Pedernal
Rb-Sr
whole-rock
U-Pb
zircon
**
Rb-Sr
bio
Sti iet rer a
Ar-Ar
muscovite
muscovite
muscovite
zircon
hornblende
zircon
Rattlesnake Hills
R abt tal esHa
si lnltsa k e
Pedernal H i l l s
metasediments
Pedernal
Hills
Pedernal Mtn g r a n i t e
Hills
Pedernal Mtn g r a n i t e
Hills
M-2 metavolcanic
Manzano Mountains g r a n o d i o r i t eO j i t a
Manzano Mountains
S eM
v iel lteatrah y o l i t e
# 6
#107
#146
Fm
#201
#216
#231
#306
Union
1314
GrandeSierra
arch
Grande No. 1 g r a n i t e
# 62
Valencia
1338
1361
1366
1427
1438
1656
**
**
**
**
Ar-Ar
Ar-Ar
U-Pb
Ar-Ar
U-Pb
Manzano
Manzano
Manzano
Manzano
Manzano
Manzano
Mountains
Mountains
Mountains
Mountains
Mountains
Mountains
S e v i l l e t a M e t a r h y o l i t e Fm
S e v i l l e t a M e t a r h y o l i t e Fm
S e v i l l e t a M e t a r h y o l i t e Fm
Priest Quartz Monzonite
S eM
v iel lteatrah y o l i t e
Fm
Monte Largo Granodiorite
# 84
Priest Quartz Monzonite
Priest
Quartz
Monzonite
#167
#247
#105
#110
#155
#165
#291
Valencia,Torrance
1439
1569
**
**
Rb-Sr
whole-rock
Rb-Sr
whole-rock
Manzano Mountains
Manzano Mountains
121
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Armstrong, D. G. and Holcombe, R. J., 1982, Precambrian rocks of a portion of the Pedernal highlands,
Torrance County, New Mexico: New Mexico Geological Society, Guidebook 33, p. 203-210.
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Barker, F. and Friedman, I., 1974, Precambrian metavolcanic rocksof the Tusas Mountains, New Mexico:
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Bell, D. A,, 1985, Structural and age relationships in the Embudo Granites, Picuris Mountains, New Mexico
[M.S. thesis]: Dallas, University of Texas, 175 p.
Bell, D. A. and Nielsen, K. C., 1985, Intrusion and deformation sequence of the Embudo granites, north-central
New Mexico: Geological Society of America, Abstracts with programs, v. 17, no. 3, p. 151.
Boadi, I. O . , 1986, Gold mineralization and Precambrian geologyof the Hopewell area, Rio Arriba County,
New Mexico [M.S. thesis]: Socorro, New Mexico Institute of Mining d Technology, 107 p.
Boadi, I. O . , Norman, D. I., and Robertson, J. M., 1987, The Hopewell Lake gold district, Tusas Mountains,
New Mexico: Geological Society of America, Abstracts with programs, v. 19, no. 17, p. 593.
Bolton, W. R., 1976, Precambrian geochronology of the Sevilleta Metarhyolite and the Los Pinos, Sepultura,
and Priest plutons of the southern Sandia uplift, New Mexico [M.S. thesis]: Socorro, New Mexico
Institute of Mining and Technology, 45 p.
Bowring, S. A. and Coudie, K. C., 1982, U-Pb zircon ages from northern and central New Mexico: Geological
Society of America, Abstracts with Programs, v. 8, p. 304.
Bowring, S. A., Kent, S. C., and Sumner, W., 1983, Geology and U-Pb geochronology of Proterozoic rocks in
the vicinity of Socorro, New Mexico: New Mexico Geological Society, Guidebook 34, p. 137-142.
122
Bowring, S. A., Reed, J. C., Jr. and Condie, K. C., 1984, U-Pb geochronology of Proterozoic volcanic and
plutonic rocks, Sangre de Cristo Mountains, New Mexico: Geological Society of America, Abstracts
with Programs, v. 16, no. 4, pp. 216.
Brookins, D. G., 1982, Radiometric ages of Precambrian rocks from central New Mexico: New Mexico
Geological Society, Guidebook 33, p. 187-189.
Brookins, D. G., 1980, Paleozoic plutonism from southern New Mexico: Evidence from the Florida Mountains:
Geophysical Research Letters, v. 7, no. 10, p. 741-744.
Brookins, D. G., 1977, Rubidum-strontium geochronologic investigationof the Zuni Mountains, New Mexico:
Brookins, D. G., 1974a, summa^^ of recent Rb-Sr age determinations from Precambrian rocks of north-central
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Brookins, D. G., 1974b, Radiometric age determinations from the Florida Mountains, New Mexico: Geology,
1974, v. 2, no. 11, p. 555-557.
Brookins, D.G., 1974c, Radiometric age determinations from the Sandia Granite, New Mexico: Summary and
interpretation: IsochronlWest, no. 10, p. 11-14.
Brookins, D. G., Balestri, M. E., and Fnllagar, P. D., 1985, Rb-Sr data from miscellaneous Precambrian rocks,
northern New Mexico: IsochrodWest, no. 42, p. 10-11.
Brookins, D. G., Bolton, W. R., and Condie, K. C., 1980, Rb-Sr isochron ages of four Precambrian igneous
rock unit from south-central New Mexico: IsochrodWest, no. 29, p. 31-37.
Brookins, D. G., Chakoumakos, B. C., Cook, C. W., Ewing, R. C., Landis, G. P. and Register, M. E., 1979,
The Hardmg Pegmatite: Summary of recent research New Mexico Geological Society, Guidebook30,
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Brookins, D.G. and Corbitt, L.L., 1974, Preliminary Rb-Sr study of igneous rocks of the Florida Mountains,
New Mexico [abs.]: EOS, American Geophysical Union Transactions, b. 55, p. 470-471.
Brookins, D. G. and Della Valle, R. S., 1977, Rubidum-strontium geochronologic investigationof the Zuni
Mountains, New Mexico: Geological Society of America, Abstracts with programs, v. 9, no. 1, p. 9.
Brookins, D. G., Della Valle, R. S., and Lee, M. J., 1978, Rb-Sr geochronologic investigationof Precambrian
silicic rocks from the Zuni Mountains, New Mexico: The Mountain Geologist, v. 15, no. 2, p. 67-71.
Brookins, D. G., Enz, R. D., Kudo, A. M., and Shafiqullah, M., 1975, K-Ar and Rb-Sr age determinations of
orbicular granite Sandia Mountains, New Mexico: IsochrodWest, no. 12, p. 11-12.
Brookins, D. G. and Laugblin, A. W., 1983, Rb-Sr geochronologic investigation of Precambrian samples from
deep geothermal drill holes, Fenton Hill, New Mexico: Journal of Volcanology and Geothermal
Research, v. 15, p. 43-58.
Brookins, D. G. and Laugblin, A. E., 1976, Rubidium-strontiumgeochronologicstudy of GT-1 and GT-2 whole
rocks: EOS, v. 57, no. 4, p. 352-353.
Brookins, D. G. and Leyenberger, T. L., 1981, Rb-Sr isochron ages of two Precambrian igneous rock units,
Colfax County, New Mexico: IsochrodWest, no. 32, pp. 21-24.
Brookins, D. G. and Majumdar, A., 1989, Geochronologic study of Precambrian rocks of the Sandia Mountains,
New Mexico: Geological Society of America, Special Paper 235, p. 147-154.
123
Brookins, D. G. and Majumdar, A., 1983, Whole-rock Rb-Sr age of the Juan Tab0 Series, Sandia Mountains,
New Mexico: IsochrodWest, no. 38, p. 21-22.
Brookins, D. G. and Majumdar, A,, 1982, The Sandia Granite, New Mexico-Biotite metamorphic and whole
rock Rb-Sr ages: IsochrodWest, no. 33, p. 19-20.
Brookins, D. G. and Shafiqullah, M., 1975, K-Ar ages for pegmatitic and metamorphic muscovites, Sandia
Mountains, New Mexico: IsochrodWest, no. 12, p. 9.
Callender, J. F., Robertson, J. M. and Brookins, D. G., 1976, Summary of Precambrian geology and
geochronology of northeasternNew Mexico: New Mexico Geological Society Guidebook27, p.
129-135.
Dallmeyer, R. D., Grambliig, J. A. and Thompson, A. G., 1990, Age and character of Proterozoic
polymetamorphism in New Mexico: Geological Society of America, Abstracts with Programs, v. 22, no.
7, p. 113.
Dalrymple, G . B., 1979, Critical tables for conversion of K-Ar ages from old to new constants: Geology, v. 7,
p. 558-560.
Davis, G. L. and Grew, E. S . , 1978, Age of zircon from a castal xenolith, Kilbourne Hole, New Mexico:
Annual Report of the Director Geophysical Laboratory, CamegieInstitution, p. 897-898.
Delevaux, M.H. and Stacey, J.S., 1980, Lead isotopes in ores and rocks of southwest New Mexico: U.S.
Geological Survey, Professional Paper 1175, p. 204.
Deuison, R. E. and Hetherington, E. A,, Jr., 1969, Basement rocks in far west Texas and south-central New
Mexico: New Mexico Bureau on Mines and Mineral Resources Circular 104, p. 1-16.
Enz, R. D., Kudo, A. M., and Brookins, D. G., 1979, Igneous origin of the orbicular rocks of the Sandia
Mountains, New Mexico: Summary: Geological Society of America Bulletin, Part I, v. 90, p. 138-140.
Evans, K. V. and Clemons, R. E., 1988, Cambrian-Ordovician (500 Ma) alkalic plutonism in southwestern New
Mexico: U-Th-Ph isotopic data from the Florida Mountains: Amer. Jour. Science, v. 288, p. 735-755.
Fullagar, P. D. and Shiver, W. S . , 1973, Geochronology and petrochemistry of the Embudo Granite, New
Mexico: Geological Society of America Bulletin, v. 84, p. 2705-2712.
Fullagar, P. D. and Shiver, W. S . , 1973, Geochronology and petrochemistry of the Embndo Granite, New
Mexico: AGU @OS) Transactions, v. 54, no. 4, p. 496.
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127
Appendix 1. List of area designations by county.
Bernalillo
County
31
-
Hidalgo
County
Carnue area
Embudito Canyon area
Jaral Ranger Station
Monte Largo Hills area
NE of Albuquerque
Rincon area
S. Sandia Mtns area
Sandia Crest area
Seven Springs
Tijeras Canyon area
unknown area
6
1
1
Round
Round
1
Lea
Chaves
3
Mockingbird Gap area
S. Oscura Mountains
Bitter Lake area
Dexter area
1
Luna
Cibola
7
Capitol Dome area
South Peak area
unknown area
1
2
4
Mora
County
Colfax
3
9
6
1
1
11
-
2 km W of
Clear Creek
1
b/w Tolby and Clear cr 1
Bobcat Pass area
1
S . Tolby Creek area
1
South of Horseshoe min
1
4
Tolby Creek area
1
W. of Palisades area
West of Clear Creek
1
County
Gardner Peak area
Goat Mountain area
Kilbourne Hole area
Mayberry Canyon area
Mineral Hill area
San Andres Peak area
Tonuco Mountain area
Tonuco Mtn area
Eddy
County
Carlsbad
Grant
area
County
5
Buckeye area
Eunice area
Hobbs area
1
1
4
1
3
1
1
1
2
2
8
5
1
1
Guadalupe
3
Bar Y dome area
E of Santa Rosa
North of Santa Rosa
2
1
2
Lincoln
County
County
1
13
4
8
1
17
-
Mogote Hills area
Pecos Baldy area
Pidlite mine area
Rio Mora area
Rio Valdez area
Truchas Peak area
Turkey Mountains area
County
Pajarito
Pajarito
1
-
County
Otero
2
-
Mtn area
Peak area
1
3
2
5
1
4
1
3
2
1
13
Bear Canyon area
Bullard Peak area
Coop mine area
Langford Mtns area
County
4
1
area
3
-
2
County
Doiia Ana
County
1
-
County
Ice Caves area
Post Office Flat
unknown area
Mountain area
Mtn area
7
-
1
-
Rio
Arriba
County
Ancones area
Ancones area
Burned Mountain area
Burned Mtn area?
Canada delO s 0 area
Cordova area
Hopewell Lake area
Kiowa Canyon area
Kiowa Mountain area
Las Tablas area
Mesa Jarita area
N. Nacimiento Mtns
Nacimiento Pk area
Rio Brazos area
S. Nacimiento Mtns are
San Pedro Peaks
area
Tusas Mountainarea
Tusas Mtn area
Tusas River Can area
unknown area
various areas
29
1
1
1
1
1
1
1
1
2
3
1
2
1
2
1
1
2
1
1
3
1
1
1
San
Juan
County
1
unknown
area
1
1
128
San
Miguel
County
Cordova area
Dalton Canyon area
Jones mine area
Nambe Falls area
Pacheco Canyon area
Santa Cruz Res. area
Santa Fe range area
Wild Horse Can area
1
1
1
2
2
1
2
Cedro Canyon area
1
Cerro Arboles area
1
Cerro Puntiagudo area
Comales Campground
1
Comanche Point area
2
Copper Hill area
2
1
Costilla Creek area
2
Gold Hillarea
47
Harding mine area
2
Hondo Canyon area
1
Latir Creek
1
Latir Creek area
1
North of Cerro Alto
12
Pilar area
6
Pilar cliffs area
1
Questa area
2
Rio Lucio area
San Cristobal Can area 2
South of El Valle area 1
1
Tres Piedras area
3
unknown area
Urraca Ranch area
3
4
various areas
2
Wheeler Peak area
1
1
Taos,
Sierra
Indian Creek area
Macho Creek area
Pecos mine area
Tres Lagunas area
Sandoval County
-6
2
2
1
1
21
-
3 mi N of Placitas
1
6
Caiion del Agua area
11
Fenton Hill area
1
Juan Tab0 area
1
Juan Tabo picnic area
1
Placitas area
Santa
Fe
County
10
-
Rio
Arriba
County
7
-
S. of Harding
Caballo dam area
Kingston mining dist.
N San Andres Mtns
Rhodes Canyon area
White Mine area
1
3
1
Torrance County
1
1
County 1
mine
1
7
-
Guadalupe Peak area
Pedernal Mtn area
Rattlesnake Hills area
S. of Capilla Peak
1
4
1
1
Sierra, SOC., Linc. County 1
-
Mockingbird
Gap
area
Union
Des
Socorro
County
Bootleg Canyon area
Garcia Canyon area
Jordan Canyon area
Ladron Peak area
Montosa Draw area
N of Oscura Mtns
North Baldy area
North of Ladron Peak
North of Oscura Mounta
Pinon Canyon area
S. Chupadera area
S. Lemitar Mtns area
Sepultura Canyon area
Shakespeare Can area
unknown area
W of Ladron Peak
Whiteface Mtn area
Socorro, Lincoln County
various areas
Taos
County
Caiioncito area
Cedro Canyon
County
1
-
1
Moines
area
1
29
-
Valencia
County
6
-
7
1
4
1
1
1
1
Estadio Canyon
Estadio Canyon area
Monte Largo Can area
Monte Largo Canyon
Pipe Canyon
Pipe Canyon area
1
1
1
1
1
1
1
2
Valencia, Torrance County 2
-
2
1
1
1
1
1
1
2
1
1
**
1
1
Estadio
Canyon
area
2