NEW MEXICO BUREAU OF MINES AND MINERAL RESOURCES
Tec h
U NIT D ESCRIPTIONS
Cenozoic Erathem
Dr. Paul W . Bauer
Geologic Mapping
Program Director
af
)
PE
DR
O
)
˛muas
16
16
57
QHa
30
30
30
QHa
81
24
20
24
4 7
15
21
3
17
˛ml
QHa
4
45
˛s
50
65
77
Ma
Xms
2
60
QHa
59
16
˛s
10
3
19
2
8
10
2
QHa
7
QHa
˛mu
˛muas
11
2
˛mlas
20
˛mu
85
˛ml
8
12
3
10m
65
3
•
• ••
Qcr
3
˛muas
••
•••
2
Qcr
•
•• ••
•
˛muas
˛mu
8
?
86
5
?
˛mlas
82
˛ml
7
?
3
5
˛muas
5
4
QHa
˛ml
˛muas
8
˛ml
7
˛muas
?
11
˛mu
?
˛mu
Qay
QHa
•••
N)
TO
NG
HI
W
AS
T
?
?
••
••
• ••
•••
l
lllll
ll
ll
6
˛mu
˛muas
3
4
3
76
˛mu
˛muas
˛muas
˛mu
2
QHa
Qcr
˛muas
˛muas
˛muas
9
6
27
16
Qay
YRISARRI 4 MI.
ESCABOSA 7.2 MI.
QHa
5
˛muas
˛muas
3
79
˛muas
˛mu
QHa
3
81
2
QHa
87
˛mu
(ESCABOSA)
QHa
˛muas
QHa
3
83
17' 30"
6
MN
0.5
0
1 MILE
GN
0
1000
2000
3000
4000
5000
6000
7000 FEET
NEW MEXICO
12°
0° 45'
213 MILS
13 MILS
1
0.5
0
QHa
3
84
˛mu
YRISARRI 4.1 MI.
3
85
000m
E.
QHa
35° 00'
106° 15'
Geology of Sedillo quadrangle,
Bernalillo County, New Mexico
1 KILOMETER
CONTOUR INTERVAL 20 FEET
QUADRANGLE LOCATION
May 1998
14 February 2000 Revision
NATIONAL GEODETIC VERTICAL DATUM OF 1929
UTM GRID AND 1976 MAGNETIC NORTH
DECLINATION AT CENTER OF SHEET
Mapping of this quadrangle was funded by a matching-funds grant from the 1998 STATEMAP
program of the National Geologic Mapping Act coordinated by the U.S. Geological Survey
and the New Mexico Bureau of Mines and Mineral Resources.
N.
Qay
12
SCALE 1:24,000
1
000m
˛mu
Qay
QHa
E XPLANATION
70
••
••
U
D
30
˛s
Sandia Formation—Sandstone-rich sequence of interbedded arkoses and feldspathic sandstones, siltstones, silty shales, and
limestones, about 150 ft (45 m) thick. This unit is commonly present between the Madera Formation and the Proterozoic basement
(or the Arroyo Peñasco Group, where present). Its contact with the overlying Madera Formation is chosen at the base of the oldest,
light-gray either massive-appearing limestone or amalgamated sequence of medium- to thick-bedded limestones. The Madera
Formation limestones are typically micrites or skeletal wackestones, whereas limestones in the Sandia Formation are typically thinner
bedded, clast supported (packstones and grainstones), and greenish, and they contain abundant siliciclastic sand.
••
••
••
Mississippian
Ma
QHa
2
60
Arroyo Peñasco Group—(seen only as blocky float) The locally thin and discontinuous sedimentary quartzite that comprises the
basal Del Padre Sandstone Member of the Espiritu Santo Formation sits directly on the unconformity over Proterozoic basement.
This very white and extremely well lithified unit is easily mistaken for a metamorphic quartzite but has no apparent foliation, has
visible rounded grains on weathered or broken surfaces, and is only seen along the Great Unconformity between Proterozoic
basement and the Pennsylvanian Sandia Formation, where it is less than 10 ft (3 m) thick. No other members or formations within
the Arroyo Peñasco Group have been recognized in the map area.
80
60
Qfc
Qpm3
M AP S YMBOLS
Exposed contact
Approximate or inferred contact
Fault—Movement unknown; tick shows dip if known
Normal fault—Solid where exposed, dashed where approximately located or inferred, dotted where concealed; bar
and ball on downthrown side; tick shows dip
Reverse fault—Dashed as it is approximately located or inferred, or dotted where concealed; teeth on upthrown side
Mesoscopic fault showing separation
Slickenlines on fault
Breccia or gouge zones
Trace of axial plane of anticline, with fold plunge, dashed where approximate or inferred, dotted where concealed
Trace of axial plane of syncline, with fold plunge, dashed where approximate or inferred, dotted where concealed
Trace of axial plane of a monocline with an anticlinal bend; short arrow on steeper beds, dashed where approximate
or inferred, dotted where concealed
Strike and dip of bedding, horizontal bedding
S 1 schistosity—S 1 is commonly subparallel to S 0 (bedding)
Joint, vertical joint
Mineral lineation defined by aligned elongate minerals and stretched grains
Mine / Quarry
Spring
Water well and storage tank
Pebbly conglomerate with siliclastic units
Slump block, dash depicts upslope failure area, arrows depicts direction of failure movement
••
Madera Formation mudstone/shale—generally does not outcrop except in roadcuts. Mudstones locally grade laterally into
limy mudtsones and nodular limestones or micaceous sandstones. Some maroon mudstones grade laterally and vertically into
arkosic sandstones.
OF
IGNEOUS
Era Period Epoch
Qaysa
˛mlcc
˛mums
U NITS
OF
SEDIMENTARY
Paleoproterozoic (?) rocks undifferentiated (on cross section).
Xu
Qay
Qca
Qc
Qpo
INDEX TO GEOLOGIC MAPPING
106° 37’ 30”
35° 22’30”
106°00’
35° 22’30”
25
E
ND
CERRO
DE LOS
TAOSES
I NDEX M AP OF NMBMMR’ S
STATEMAP GEOLOGIC QUADRANGLES
12/ 99
Ortiz
Mountains
IO
NMBMMR STATEMAP
Quadrangles
San
Pedro
Mountains
0
0
TRES
OREJAS
20
3
Abo Formation—Red and locally tan (particularly near the base), medium- and thin-bedded arkose and feldspathic sandstone
interbedded with red micaceous siltstone and shale, commonly with green reduction spots. The lowermost arkoses are typically
lighter colored and coarser grained than the younger feldspathic sandstones, and at least one of them is strongly bioturbated
(Macaronichnus). The sandstones are cross-stratified (typically trough and wedge-planar geometries), and the finer-grained rocks
are commonly ripple cross-laminated. Mud-chip clasts and plant debris are common. It is differentiated on the map only southeast
of Cedro Peak where about 30 ft (9 m) of basal red arkosic sandstones are present.
.
Abo limestone lithotype—Rare, less than 1-m-thick, thin- to medium-bedded, gray to tan limestones, typically containing
abundant bivalve fragments and/or echinoid spines.
25
TAOS
JUNCTION
LOS
CORDOVAS
285
84
OF-DM–22
TAOS SW
GM–27
LA
VENTANA
SAN
MIGUEL
MOUNTAIN
GM–28
GM–34
HOLY
GHOST
SPRING
GILMAN
Albuquerque
40
Tij
yo
y
Tijera s Ca n
on
by
Adam S. Read 1 , Bruce D. Allen 2 , Glenn R. Osburn 3 ,
Charles A. Ferguson 4 , and Richard Chamberlin 1
1 New Mexico Bureau of Mines and Mineral Resources, Socorro, NM 87801
2 New Mexico Bureau of Mines and Mineral Resources, Albuquerque, NM 87108
3 Department of Earth and Planetary Sciences, Washington University, St. Louis, MO 63130
4 Arizona Geological Survey, 416 W. Congress, #100, Tucson, AZ 85701
˛mu
Madera Formation, undifferentiated—A mixed sequence dominated by medium- to thick-bedded, light-gray limestone interbedded
with subordinate orange to reddish arkose and tan sandstone as well as siltstones (which are less common and can be greenish
to tan and micaceous), about 1,600 ft (490 m) thick. Dark-colored mudstone intervals with variable amounts of thinly bedded
black micrites are also present, particularly at the base of the formation. This formation is informally divided into two members:
˛ml —dominated by massive limestone, shale, and thin discontinuous siliciclastic beds near the top of the unit, and ˛mu —a cyclically
interbedded sequence of limestone and thinner siliciclastic and mudstone beds. The upper member is defined by the first occurrence
of a thick and relatively continuous siliciclastic bed. Due to poor exposure and the difficulty in tracing thin beds through the folded
and likely faulted Chamisoso monocline south of Tijeras Canyon, the distinction between ˛mu and ˛ml is not always clear. Within
both members, contacts between the limestones and coarse-grained siliciclastics are generally sharp although occasionally both
coarse clastic material is seen within limestone as well as limestone clasts within siliciclastic units. These often arkosic sandstones
are typically coarse- to medium-grained, but granules and rarely pebbles also are present. These pebbles can be up to 1.5 in (4
cm) in diameter and consist principally of Precambrian quartzite with minor micaceous felsic schists that look very similar to rocks
presently exposed in the basement-cored uplifts of north-central New Mexico. Siliciclastic rocks generally have a well developed
planar or cross stratification. Contacts between the limestones and mudstones are generally gradational. Limestones, which vary
in thickness from 8 in to 65 ft (20 cm to 20 m) (amalgamated beds), dominate the formation, and these are typically matrixsupported (micrites and skeletal wackestones). Clast-supported limestones (skeletal grainstones and packstones) are less common,
although locally abundant, and these tend to be toward the top of sequences. Skeletal debris in the Madera Formation limestones
consist mostly of crinoid stems and columnals, brachiopods, corals, bryzoans, and sometimes abundant fusilinids. Molluscan shell
fragments are rare. The lower member (˛ml ) is generally more fossiliferous.
Madera Formation upper member (comprises all members of the Wild Cow Formation of Myers and Mckay, 1976,
which were defined on the basis of fusilinid biostratigraphy)—a sequence of alternating limestones and siliciclastic rocks
that are often arkosic and generally medium to coarse grained, about 850 ft (260 m) thick. The base of this member is defined
as the first occurrence of a thick and relatively continuous siliciclastic bed. Petrified wood is seen locally throughout this member.
VALLE
SAN
ANTONIO
SEVEN
SPRINGS
VALLE
TOLEDO
Sedillo
Quadrangle
MANZANITA
GM–45
OJITO
SPRING
OF-DM–18
SAN
YSIDRO
JEMEZ
SPRINGS
REDONDO
PEAK
BLAND
BEAR
PONDEROSA SPRINGS
PEAK
LOMA
CRESTON
JEMEZ
PUEBLO
OF-DM–25
CAÑADA
COLLIER
DRAW
(SKY VILLAGE NW)
SANTA
ANA
PUEBLO
CERRO BERNALILLO
CONEJO
NW
OF-DM–45
(SKY VILLAGE NE)
ARROYO
LOMA
SAN
DE LAS
MACHETE
FELIPE
CALABACILLAS
MESA (SKY VILLAGE SE)
(SKY VILLAGE)
OF-DM–42
COCHITI
DAM
BENAVIDEZ
RANCH
SANTO
DOMINGO
PUEBLO SW
SANTO
DOMINGO
PUEBLO
OF-DM–15
SAN
FELIPE
PUEBLO
SAN
FELIPE
PUEBLO NE
OF-DM–19
OF-DM–37
PLACITAS
ESPAÑOLA
LA MESITA
NEGRA
DALIES
NW
34°45’
106°00’
RIO
PUERCO
OF-DM–2
HORCADO
RANCH
WHITE
ROCK
GM–73
Physiography of the Sedillo quadrangle and surrounding area. Base
derived from USGS 10-m DEM data.
LOS
GRIEGOS
OF-DM–33
PEÑASCO
TRES
RITOS
OF-DM–10
SANDIA
CREST
SANDIA
PARK
OF-DM–6
OF-DM–1
SEDILLO
OF-DM–4
AGUA
FRIA
CUNDIYO
285
EL VALLE
SIERRA
MOSCA
TRUCHAS
PEAK
SHADY
BROOK
Kv
33°
Las
Cruces
Location Map
JICARITA
PEAK
36°00'
PECOS
FALLS
COWLES
25
ASPEN
BASIN
ELK
MOUNTAIN
SANTA FE
OF-DM–32
OF-DM–23
PICTURE
ROCK
MADRID
ROSILLA
PEAK
GALISTEO
OF-DM–49
OF-DM–30
ISLETA
HUBBELL
SPRING
OF-DM–13
OF-DM–5
OF-DM–8
LOS
LUNAS
SE
BOSQUE
PEAK
LOCATION MAP OF
MAPPING RESPONSIBILITIES
Sedillo 7.5’ Quadrangle
HONEY
BOY
RANCH
OF-DM–31
GLORIETA
PECOS
LOWER
COLONIAS
BULL
CANYON
35°30'
NORTH
ROWE SAN YSIDRO
14
Cedar
Crest
285
GOLDEN
CAPTAIN
DAVIS
MOUNTAIN
OJO
WILDHORSE
RENCONA
HEDIONDA
MESA
OF-DM–36
OF-DM–48
OF-DM–39
SAN
PEDRO
KING
DRAW
Sedillo
LAGUNA
ORTIZ
CAPILLA
PEAK
TOME NE
TURN
TOME SE
LA JOYA
NW
TAJIQUE
MILBOURN
RANCH
ESTANCIA
TORREON
EWING
MOUNTAINAIR
NE
MANZANO PUNTA DE
MOUNTAINAIR
PEAK
AGUA
Ps
Psg
SILVER
CREEK
SCHOLLE
SAN
ACACIA
BECKER
SW
LEMITAR
MESA
DEL
YESO
SIERRA
DE LA
CRUZ
34°
22'
30"
CERRO RAYO HILLS
MONTOSO
LOMA
DE LAS
CANAS
BUSTOS
WELL
OF-DM–38
WATER
CANYON
SOCORRO
34°30'
106°00'
BECKER
106°30'
SAN
LORENZO
SPRING
WILLARD
B ELEN 1:100,000
BLACK
BUTTE
ˇm
35°00'
MORIARTY
SOUTH
S OCORRO 1:100,000
ABEYTAS
ˇc
OF-DM–29
CHILILI
OF-DM–28
LADRON
Jet
EDGEWOOD MORIARTY
OF-DM–35
NORTH
337
VEGUITA
BELEN
SW
Kms
Kd
40
OF-DM–27
COMANCHE
RANCH
Kvs
Kdu
OF-DM–20
MOUNT
ESCABOSA
WASHINGTON
Kvt
35°15'
105° 30'
OF-DM–24
TOME
Km
Kvm
OF-DM–11
S ANTA F E 1:100,000
OF-DM–41
OF-DM–40
McCLURE
RESERVOIR
OF-DM–7
TETILLA
PEAK TURQUOISE SETON
HILL
VILLAGE
A LBUQUERQUE 1:100,000
OF-DM–3
LOS
LUNAS
40
TIJERAS
OF-DM–17
WIND
MESA
BELEN
TRUCHAS
V ILLANUEVA 1:100,000
ALAMEDA
OF-DM–21
BELEN
NW
SANTA FE
Albuquerque
Deming
OF-DM–12
Tmi
Socorro
OF-DM–47
MONTOSO
PEAK
HAGAN
OF-DM–16
LA MESITA
ALBUQUERQUE
NEGRA SE ALBUQUERQUE
EAST
WEST
DALIES
35°
PUEBLO
PEAK
GM–71
TESUQUE
BERNALILLO
OF-DM–9
VOLCANO
RANCH
RANCHOS
DE TAOS
T AOS 1:100,000
Santa Fe
L OS A LAMOS 1:100,000
OF-DM–14
OF-DM–46
CHIMAYO
PUYE
GUAJE
MOUNTAIN
Los
Alamos
FRIJOLES
OF-DM–26
MOUNTAINS
Canyo n
H el l
GM–33
Grants
84
40
s
e ra
34°45’
106° 37’ 30”
VELARDE TRAMPAS
68
SAN
JUAN
PUEBLO
CHILI
A BIQUIU 1:100,000
GM–26
OF-DM–43
103°
Taos
36°30'
30 km
LYDEN
RANCHO
DEL
CHAPARRAL
WHEELER
PEAK
105°
CARSON
South
Mountain
SAN
PABLO
ARROYO
SECO
107°
Taos
20 mi
10
ARROYO
HONDO
109°
37°
TAOS
Sedillo
10
LA JOYA
74
Qay
˛mu
1000
A. S. Read: mapping, map compilation, differentiation of the Madera Fm., structural
cross sections B-B', C-C'; B. Allen: Quaternary mapping and unit descriptions; C. A.
Ferguson: mapping, structural cross section A-A'; G. R. Osburn: Mesozoic/Permian
mapping and unit descriptions; R. Chamberlin: mapping of the northeast corner of
the quadrangle
˛mu
38
˛muas
˛muas
Abo–Yeso Formations, undifferentiated—The lower two lithostratigraphic units of the Permian represent a reddish, feldspathic
to quartzose siliciclastic sequence, some 1,300 ft (400 m) thick, that was mapped as a single unit throughout most of the study
area.
Yeso Formation (not differentiated on map)—Reddish to pink or tan, medium- to thin-bedded feldspathic sandstone, shale,
and silty shale interbedded with massive or laminated, micritic, gray or tan limestone near the top. The sandstones are typically
cross-stratified and/or cross-laminated and virtually identical to those within the underlying Abo Formation except that salt-hopper
casts and molds are present.
Yeso sandstone lithotype—Red to light-red and tan, medium- to fine-grained feldspathic sandstone and red siltstone or shale.
Sandstones are typically thin to medium bedded and wedge planar to trough cross-stratified; ripple cross-laminations are
common in the finer-grained intervals. Yeso lithotype siliciclastics are virtually indistinguishable from those of the Abo Formation,
and these sequences were usually mapped together. Yeso siliciclastics were differentiated only in areas directly adjacent to
Yeso limestones or where salt-hopper casts/molds are abundant. Salt-hopper casts and molds are usually present in the upper
part of the Abo–Yeso formation siliciclastic sequence, but because of the generally poor exposure and the small size of float
material, the presence or absence of these structures was not considered a reliable criterion for picking the Abo–Yeso contact.
Upper and Middle Pennsylvanian
˛muas
˛mu
2
20'
˛mu
Qcr
˛muas
˛mu
˛muas
˛mu
˛mu
7
3
R. 5 E. 470 000 FEET R. 6 E.
QHa
˛mu
10
6
˛muas
Pac
Qay
Qay
˛muas
12
˛mu
4
˛mu
˛mu
75
˛muas
Qcr
3
38
Qay
Qcr
˛mu
2
˛mu
2
˛mu
3
˛muas
˛mu
82
3
QHa
3
?
Pa
3
?
?
Base from U.S. Geological Survey 1954, photorevised 1976
Polyconic projection, 1927 North American datum, 10,000-foot grid based on New
Mexico coordinate system, cental zone
1000-meter Universal Transverse Mercator grid ticks, zone 13, shown in blue
D. J. McCraw: digital cartographic production
lll
ll
4
˛muas
˛muas
˛muas
˛muas
?
Qay
I)
IL
UN
75
Qay
IL
O
3
Qay
H
(C
(M
?
?
3
˛mu
35° 00'
106° 22' 30"
?
˛muas
3
QHa
QHa
˛mu
Qcr
4
?
?
•••
74
•
38
˛mu
˛mu
?
˛muas
7
•
˛muas
••
˛muas
5
QHa
••
3
3
˛muas
6
••
83
4
˛muas 7
3
76
3
7
Pys
˛mu
˛muas
?
?
4
Qay
˛mu
˛mu
˛muas
4
2
2
76
7
6
?
?
38
7
5
˛muas
Py
Qay
6
?
˛ml
˛muas
QHa
˛mu
˛muas
˛muas
88
˛mu
?
Pay
˛mu
˛muas
San Andres–Glorieta Formations, undifferentiated—The upper two lithostratigraphic units of the Permian are complexly
interleaved. The lithotypes, which may not correlate strictly with formations of the same names, are gray limestone (San Andres)
and white quartz arenite (Glorieta). Combined, these units are approxinately 400 ft (120 m) thick.
.
San Andres Formation—Light-gray and less commonly tan, medium- to thick-bedded limestone, about 200 ft (60 m) thick.
The limestones are mostly micrites or skeletal wackestones, commonly with some component of quartz sand.
.
Glorieta Formation —White and pink (along contact with underlying Yeso Formation), massive or plane-bedded to low-angle
planar cross-stratified quartz arenite, about 200 ft (60 m) thick. Locally, the sandstones are extensively bioturbated (Macaronichnus),
and near the contact with Yeso lithotype they are feldspathic. The sandstones are typically well sorted, but a thin, feldspathic
quartz-pebble conglomerate occurs just below the base of the lowermost San Andres lithotype limestone in the Arroyo Armijo
area along the boundary between Sandia Park and Sandia Crest quadrangles.
Lower Permian
c'
˛mucc
Qay
5
?
?
?
˛muas
??
?
Qcr
Qay
˛mu
59
˛mlas
7
4
˛muas
?
70
˛muas
3
QHa
?
?
Qay
3
˛muas
?
?
2
˛ml
˛muas
˛mu
˛mu
4
?
• •
•
•• •
10
4
QHa
˛muas
3
˛ml 4
84
•• •
••
8
4
˛mu
˛mlas
••••
••••
1 460 000
FEET ˛mu
Qcr
?
•
• •• ••
•
••••• •
• ••
9
˛muas
˛mucc
2
˛muas
?
14
˛muas
˛mu
˛mu
87
Qay
77
˛mucc
QHa
QHa
•• ••
4
75
˛muas
86
6
38
7
5
˛mu
3
˛muas
?
?
?
3
?
˛muas
˛muas
˛muas
Qay
••••
76
˛mu
Ps
8
2
3
˛muas
7
Qay
Pg
˛muas
˛mu
3
˛mu
˛muas
2
˛mu
˛mu
3
4
1
14
˛muas
QHa
˛mu
5
˛mlas
7
38
ne
Qay
•
•
••••
•
˛muas
4
˛muas
˛muas
6
8
3
Qay
QHa
˛mu
˛mu
Psg
Qay
QHa
QHa
1m
84
5
80
Qay
˛muas
3
• • •• • •
•
˛mu
Qay
8
15
Qay
Qay
5
˛mlas
77
˛mu
˛mu
˛mu
˛muas
86
4
˛muas
˛muas
˛mlas
4
7 78
26
˛mu
Qay
4
˛mu
6
˛muas
7
2
˛muas
Qcr
˛mu
69
˛ml
˛ml
˛muas
˛mlas
˛muas
18
˛muas
˛mu
28
41
˛muas
˛mu
12
QHa
˛mu
6
85
4
˛mu
Qay
Qay
Qay
Pelitic and semi-pelitic schist—gray quartz-rich pelitic and semi-pelitic schist with gradational changes in mica content between
micaceous quartzite and quartz-muscovite schist. containing multiple tectonic fabrics defined by fine-grained micas. Porphyroblasts
have not been seen in hand sample.
50
Upper Permian
˛mu
88
Madera Formation ledge forming limestones that are distinct and particularly thick.
Paleozoic Erathem
8
˛muas
2
5
˛mlas
6
˛mlas
76
QHa
˛mu
4
˛mlas
˛ml
4
5
˛muas
Qcr
3
˛mlas
3
l
lll
••
••
••
••G
• •u t
• i• e r
• •r e z
••
•
˛muas
7
2
38
˛muas
14
Qay
Qay
Qcr
7
6
c
7
4
5
11
28
77
˛ml
7
•
Qcr
24
87
3
˛muas
2
˛mucc
Moenkopi Formation—Recessive-weathering, dark-red micaceous shale, silty shale, and thin-bedded feldspathic sandstone, about
200 ft (60 m) thick.
ˇm
QHa
˛muak
2
T. 10 N.
T. 9 N.
Qay
Qay
Madera Formation arkose—orange to pale red, medium- to coarse-grained arkosic to sandstones (10-25% feldspar) that are
locally conglomeratic.
NTAINS
3
83
7
6
˛mu
˛muak
MOU
U
D
4
10
78
˛muas
˛mlas
IA
1.5m
14
˛mlas
8
˛mu
7
3
Qay
˛ml and ˛mu are subdivided into several common lithotypes denoted by two lower case letters. The principal lithologic
distinction is between siliciclastic rocks and limestone/shale. For brevity and clarity, where a lithotype is not specified and
siliciclastic units bound either contact, the Madera lithotype is considered to be dominantly a mixture of limestone and subordinate
shale. Otherwise, the Madera lithotypes remain undifferentiated. Where lithotypes are differentiated, the limestone is generally
well exposed forming ledges and benches, but the shale is only seen to outcrop rarely and in roadcuts.
.
Madera Formation siliciclastics undifferentiated including siltstone, sandstone, and arkose. Most clastic rocks are usually medium
to coarse grained. Less common are siltstones and fine- to medium-grained sandstones that are often micaceous. Pebble
conglomerates are locally seen but often grade into coarse sandstones. These rocks are generally well stratified from planar
to cross bedded (to varying degrees). Individual beds are often tabular extending up to several kilometers but may be lenticular
as well.
C ORRELATION
Paleoproterozoic rocks
Lithotypes within ˛m, ˛mu, and ˛ml :
˛muas
6,000'
Xu
Proterozoic Erathem
Xms
Middle and Lower Triassic
02' 30"
˛mu
QHa
6
QHa
1
˛mu
˛mu
˛mu
86
˛mu
˛mu
Qcr
˛muas
Qcr
QHa
Qay
Qay
Chinle Group—Dark-red, mostly medium bedded, trough and wedge-planar cross-stratified feldspathic sandstone and silty micaceous
shale, about 1,300 ft (400 m) thick. Green reduction spots are common, as are limestone-pebble conglomeratic intervals, particularly
near the base of the unit.
ˇc
˛mu
QHa
7
˛ml
4
Qcr
˛s
Xu
Madera Formation lower member (Los Moyos Limestone of Myers and Mckay, 1976, which they defined on the
basis of fusilinid biostratigraphy)—a sequence of often fossiliferous and massively bedded cliff-forming wavy laminated and
cherty micritic limestone interbedded with shales, about 750 ft (230 m) thick. Shale is particularly abundant near the base of
this member where it grades into the Sandia Formation.
˛ml
˛ml
˛s
Tmi
D
5
˛mu
6,000'
N
5
2
••
• • •
TIJERAS 3.6 MI.
87
˛ml
83
af
7
Qcr
4
QHa
˛ml
˛s
Xu
˛s
7,000'
˛mu
˛ml
Upper Triassic
˛mu
Qay
6
˛muak
4
˛muas
Qay
˛mu
˛mu
˛ml
A
QHa
1
˛mlas
QHa
˛mu
˛ml
7,000'
S
˛ml
4
Qcr
2
2
˛muas
79
Qay
2
4
˛mu
8
38
2
5
˛muas
˛mu
˛muas
Pa
˛mu
˛mu
˛mu
3
QHa
QHa
4
3
10
af
4
66
˛ml
14
80
˛mlcc
20
Qcr
˛mu
˛muas
3
Jet
2
˛muas
˛mu
Qcr
˛muas
38
5
˛mu
Qay
˛ml
˛muas
5
5
7
2
39
5
4
Entrada & Toldilto Formations, undifferentiated—This unit, which is about 250 ft (75 m) thick, is projected south from the Sandia
Park and Sandia Crest quadrangles in cross section A-A' only.
Entrada Formation—Light-green, massive (bioturbated?) sandstone. Rarely, this unit displays high-angle cross-stratification.
Todilto Formation, chiefly Luciano Mesa Member—In most areas the only part of the Todilto Formation exposed is the
Luciano Mesa Member, which is a laminated, fetid, dark-gray micritic limestone. Laminations in the limestone appear to be algal
in origin, and macrofossils are conspicuously absent.
Qay
˛mu
˛mu
3
˛mu
Qay
˛mu
˛muas
3
7
5
6
˛mu
6
QHa
˛mlas
10
˛mu
3
˛mlas
5
78
˛muas
QHa
˛mu
Middle Jurassic
˛muas
Qay
3
3
38
4
Qay
QHa
QHa
2
1
2
B'
Qay
77
2
˛muas
Qay
Morrison Formation—Medium- to thick-bedded, light-colored, generally poorly sorted feldspathic sandstones, with green and red
shaley interbeds about 500 ft (150 m) thick. Sandstones contain abundant quartz granules and greenish mud-chip clasts, and the
feldspar grains typically are strongly altered to white clay minerals. The upper part of this unit in some areas is a moderately to
well-sorted, moderately bioturbated feldspathic sandstone, which may be equivalent to the Jackpile Member. Abundant dark grayishgreen shaly intervals with thin, dark-colored micritic limestones are present in some areas near the base of the map unit. (cross
section A-A' only, projected south from Sandia Park and Sandia Crest quadrangles).
Jm
7
˛mu
4
QHa
3
2
QHa
˛mu
4
80
Qay
4
˛muak
38
Qay
Qay
˛mu
Upper Jurassic
˛mu
Qay
85
Qay
5
3
02' 30" 12
˛ml
˛muak
4
˛mu
7
˛mu
˛muas
˛muas
3
˛muas
3
Dakota Formation—Medium-bedded, pervasively silica cemented, plane-bedded to tabular cross-stratified quartz arenite, typically
with abundant vertical, lined burrows, many of which are clearly Diplocraterion traces. (cross section A-A' only, projected south
from Sandia Park and Sandia Crest quadrangles).
Kd
Qay
4
˛muas
3
5
QHa
Mancos Shale—Dark-gray shale, slightly calcareous shale, and septarian nodule-bearing shale with rare, thin, black micrite beds
and at least two 9 to 13 ft (3 to 4) m thick, medium-bedded calcareous sandstone intervals. Entire unit is about 1,300 ft (400 m)
thick. The micrites and sandstones are typically fossiliferous, yielding abundant molluscan shell fragments. A prominent noncalcareous
sandstone is present in the middle of this unit that directly overlies a calcareous shale and siltstone interval containing the late
Turonian ammonites Prionocyclus novimexicanus and Scaphites whitfieldi, indicating that these strata are equivalent to the late
Turonian Juana Lopez Member of the Mancos Shale.
Mancos sandstone—Medium- to thin-bedded, noncalcareous, extensively vertical burrowed, fine- to medium-grained sandstone.
The sandstone is recognized only east of Tijeras fault where it is less than 6 ft (2 m) thick. It directly overlies a calcareous
siltstone–shale interval interpreted as equivalent to the Juana Lopez Member because it contains the late Turonian ammonites
Prionocyclus novimexicanus and Scaphites whitfieldi. (cross section A-A' only, projected south from Sandia Park and Sandia
Crest quadrangles).
Dakota Formation, upper map unit—A thin unit (<100 ft -- 30 m) of thin- to medium-bedded slightly calcareous sandstone,
siltstone, and silty shale separated from the main body of the Dakota Formation by a covered interval. The map unit is probably
correlative with the Twowells Tongue of the Dakota Formation. (cross section A-A' only, projected south from Sandia Park and
Sandia Crest quadrangles).
Kdu
Qay
A'
9
˛muas
˛mu
˛mu
˛ml
21
T. 10 N.
6
˛muas
81
QHa
5
5
78
3
38
Qay
˛mu
QHa
˛muas
˛mu
˛muas
Qay
˛muas
4
˛mu
QHa
˛mu
2
˛muas
8
90
˛mu
Kms
˛mu
Qay
˛mu
76
83
5
QHa
4
T. 9 N.
5
˛muas
4
˛mlas
2
3
2
˛mu
9
31
˛mlas
2
2
˛mu
2
4
˛muas
˛mu
2
72
6
˛muas
•
••
••
••
••
10
Qay
˛mu
˛muas
2
˛muas
14 19
4
˛muas
6
˛mu
˛muas
38
6
QHa
88
˛muas
5
˛muas
˛muas
5
Qay
3
˛mu
QHa
3 53
3
˛mlas
˛muas 8
˛muas
5
5
3
14
79 Ma
5
˛ml
5
38
4
3
4
Tmi
˛mu
˛muas
7
˛muas
6
˛muas
˛muas
˛muas
12
Km
5
QHa
˛muas
2
3
3
5
5
4
7
˛mu
2
˛mu
3
87
˛ml
20
80
4
10
14
QHa
14
Ma
˛mlas
˛s
4
QHa
˛mu
5
˛mu
82
˛muas
˛muas
˛mu
˛muas
2
4
•••
•••
•••
•••
•••
27
50
•
•• ••
• 55
7
86 87
QHa
38
˛mu
Water
Tank
˛muas
˛mu
˛muas
3
˛mlas
5
14
11
˛mucc
˛muas
QHa
QHa
2
2
˛muas
˛mu
Qcr
7
˛muas
˛ml
˛mlas
7
4
•
• • • • •
21 ˛mu
16
21
6
8
30
6
3
12
15
˛ml
6
86
84
˛mu
5
QHa
5
7
˛muas
6
7
QHa
5
31
20
25
28
84
5
10
••
• • •
17
78
6
8
˛mlas
7
6
35
4
13
QHa
17
66
23
26
˛mu
˛s
4
6
˛mu
5
Kvs
6
11
1
˛mu
Qay
˛muas
10
˛mu
˛muas
˛muas
˛mu
87
2
3
˛ml
12
Qay
˛muas
QHa
5
3
3
3
QHa
˛muas
QHa
˛mlas
4
89
30
7
4
28
10
QHa
˛muas
˛mlas
12
18
9
˛mu
Qcr
˛muas
21
QHa
8
20
17
5
˛muak
32
22
B 3880
20
14
7
18
˛muas
˛mu
3
6
81
Qay
8
12
14
22 30
21
QHa
31
33
(TIJERAS)
12
4
87
˛mlas
7
?
5
˛ml
˛mu
78
Qay
˛muas
Qcr
1
5
8
QHa
QHa
˛muas
4
8
˛muas
˛mu
˛muas
˛muas 54
˛mu
?
5
˛ml
˛muas
4
Qcr
14
23
15
17
QHa 19
af
6
10
˛muas
3
6
85
84
4
?
˛muas
25
17
15
16
18
14
38
8
32
22
33
27
10
Qcr
3
Qcr
Kvt
˛mu
5
3
4
5
85
˛mucc
?
17
17
23
?
˛ml
3
?
Qay
QHa
˛mu
˛mu
˛muas
7
?
05'
Qay
7
˛mu
˛muas
3
12
QHa
˛mu
QHa
Qcr
˛mu
13
˛mlas
16
af
af
˛muas
9
˛mu
QHa
16
14
17
10
25
10
10
16
17
11
Qay
QHa
87
••
˛mu
˛ml
11
7
˛muas
14
11
˛muas ˛mu
25
˛mlcc
4
12
31
17
12
Qcr
3
7
3
Mesaverde Group—A complex unit of marine, marginal-marine, and fluvial sandstones, shales, and siltstones with at least two
intervals of coal-bearing strata, at least 1,400 ft (430 m) thick. The sequence is divided into three mappable lithofacies, which have
been given interpretive informal names: 1) marine sandstone and shale (Kvm); 2) fluvial and distributary-channel sandstones, which
include the coal beds (Kvt ); and 3) shoreface sandstones (Kvs). The sandstones of the Mesaverde Group range from feldspathic
arenites to quartz arenites, and, locally, dark-colored chert grains are abundant.
Mesaverde Group marine sandstone and shale—A map unit recognized only in areas where molluscan shell fragments
(chiefly bivalves) are present. The unit is typically recessive weathering, and the sandstones are thin to medium bedded, dark
brown to greenish, argillaceous, and variably calcareous. The unit along the west limb of the Tijeras syncline includes at least
one medium-bedded calcareous sandstone containing septarian nodules and bivalve shell fragments.
Mesaverde Group terrestrial sandstones—A map unit characterized by abundant woody debris and mud-chip intraclasts.
It consists of two types of sandstones: 1) resistant, medium- to thick-bedded, trough and wedge-planar cross-stratified, lightcolored sandstones and 2) recessive, massive or flaggy-weathering, argillaceous, greenish-brown sandstones and siltstones
with abundant woody debris and mud-chip clasts. Three intervals of this map unit are recognized, each overlying marine
sequences, and the upper two contain coal beds. The middle unit thins dramatically to the east, where it is represented by a
3 to 10 ft (1 to 3 m) thick, clean, cross-stratified sandstone along the east limb of the Tijeras synclinorium.
Mesaverde Group near shoreface sandstones—A map unit recognized by a combination of at least two of the following
features: 1) clean (nonargillaceous), well-sorted nature of the sandstone; 2) planar bedding or low-angle cross-stratification;
3) recognition of the upper-shoreface-environment restrictive trace fossil Macaronichnus (c.f. Mieras et al., 1993). Molluscan
shell fragments are also recognized, and at the top of the easternmost mapped outcrop, vertical, lined burrows are present.
The combination of textural maturity, sedimentology, and ichnofauna are indicators of a high-energy near-shoreface environment.
The map unit is discontinuous, appearing to grade laterally into marine or nonmarine sandstone units.
8,000'
Pa
˛mu
late
35
15
29
8
3
QHa
˛mucc
15
24
˛m
?
23
QHa
˛mlas
QHa
˛muas
4
26
18
51
6
6
13
10
37
25
˛m
17
30 33
6
10
˛mlas
13
˛muas
?
86
?
••
82
28
26
QHa
Qca
˛muas
10
76
˛muas
Otero
Canyon
middle
24
˛mu
3
9
10
9
9
5
˛mucc
?
•••
21 24
˛muas 15
14
83
?
4
2
8,000'
early
19
˛ml
13
10
QHa
21
13
38
˛mu
?
5
10
˛mu
˛mu Qay
3
˛ml
3
12
˛mu
˛mu
?
9,000
feet ASL
Holocene
23
28
QHa
10
7
˛muas
Kvm
Qay
80
E
Sedimentary rocks
QHa
˛muasQcr
8
?
as
77
2
C'
W
Pleistocene
20
Qca
˛mu
5
3
6
10
˛mlas
84 ˛mu
?
C
Quaternary
Qca
9
4
Qcr
Xu
Tertiary
15
13
˛mucc
10
7
8
5
8
15
18
˛ml
˛mu
7 QHa
˛mucc
3
QHa
˛muas
2
6,000'
Xu
Cretaceous
QHa
20
QHa
˛muas
84
Xu
Jurassic
11
9
50
31
38
30 12 46
QHa
11
10
3
11
Xu
Triassic
Pay
˛muas
˛muas
7
˛mu ˛muas
7
2
QHa
QHa
2
2
QHa
˛s
OF-DM–34
Pg
Permian
21
3124
40
QHa
6
˛ml
QHa
Qay
QHa
?
22
7
˛muas
QHa 9
˛muas
4
˛mu
?
Qay
af
9
4
4
?
QHa
˛mu
˛muas
Xu
Ferguson and Osburn
Chamberlin
Read
Quaternary of
entire quadrangle
(not depicted above)
Allen
Py
Pys
Pa
Pac
Pay
Pennsylvanian
41
12
˛mu
˛mu
5
˛muas
35
48
43
21
?
15
25
15
68
10
?
˛ml
˛s
Tmi
˛mu
˛muas ˛muak ˛mucc ˛mums
˛ml
˛mlas
˛m
˛mlcc
˛s
107°00'
Miss.
15
52
41
23
Pay
50
40
43 28 9 2
57 48
54
3
34
3
28 40
17 3
47
60
14
QHa
05'
7
˛mu
Xu
COMMENTS TO MAP USERS
A geologic map graphically displays information on the distribution, nature, orientation and age relationships of rock and surficial units
and the occurrence of structural features. These data are derived from geologic field mapping, compilation of published and unpublished
work, and photogeologic interpretation. Locations of geologic unit contacts are not surveyed; therefore, the accuracy of contact locations
depends on the scale of mapping and the interpretation of the geologist. The study area was mapped at scales of 1:12,000 and 1:24,000;
therefore, the user should be aware of significant variations in map detail. Any enlargement of this map beyond a scale of 1:12,000 could
cause misunderstanding in the detail of mapping and may result in erroneous interpretations. Site-specific conditions should be verified
by detailed surface mapping or subsurface exploration.
This quadrangle map has been Open-filed in order to make it available as soon as possible. The map has not been reviewed according
to New Mexico Bureau of Mines and Mineral Resources standards, and due to the ongoing nature of work in this area, revision of this
map is likely. As such, dates of revision will be listed in the upper right corner of the map and on the accompanying report.
The contents of the report and map should not be considered final and complete until it is published by the NMBMMR.
Ma
METASEDIMENTARY
middle
Qca
10
17 14
QHa
˛mu
?
7
5
S2?
early
10
15
26
27
6
86
Qay
Qay
2
˛s
Xms
Ma
6,000'
Mesozoic Erathem
Upper Cretaceous
Qay
?
76
5
84
QHa
Qay
QHa
˛mu
˛mu
4
88
QHa
?
?
˛mucc
˛s
7,000'
˛mu
˛ml
˛ml
CENOZOIC
Qca
26
25
10
?
1
38
Qay
˛ml
˛s
9,000
feet ASL
2
QHa
Ma ˛s
˛ml
˛mu
M ESOZOIC
Qca
12
15
18 30
17
˛mucc
46
17
6
82
7,000'
9,000
feet ASL
˛mu
˛mu
˛ml
E
8,000'
PALEOZOIC
23
25
˛mu
B'
Pa
PROTE ROZOIC
Pay
˛muas 13
?
˛mlas
6
8,000'
4,000'
.
˛mucc
QHa
QHa
?
?
17
87
5
Qcr
Cedro
Peak
a
20
17
44 17
7
5
?
˛muas
9,000
feet ASL
Are
27
36
40
W
ue
20
14
36
58
21
17
˛muas
2
?
Qay
˛mu
Qay
4
?
6
˛mlas
B
rq
14
20
45
15
31
˛mu
17
79
3
˛mu
8
3
af
Qay
Qay
Dike—Generally deeply weathered mafic to intermediate dikes that strike N-S and are steeply dipping.
Tmi
Qay
QHa
?
QHa
Qay
These cross sections are constructed
based upon the interpretations of the
authors made from surficial geologic
control and subsur face and
geophysical data, where available.
They should be primarily used as an
a i d t o g e o l o g i c f ra m ewo r k
understanding and not be the sole
source of information used in locating
or designing wells, buildings, roads,
or other man-made structures.
Jet
ˇm
Pay
Tertiary igneous intrusive rocks
QHa
QHa
˛mu
3
6
Qay
Qcr
˛ml
Kd
ue
12
Pay
?
84
4
5 3
3
Qay
Pg
5,000'
˛s
Jet
Jm
Xu
˛mu
Jm
Kd
R
•
••
13
24 Qcr
26
28
10
QHa
Qay
Kdu
ˇc
6,000'
Xu
Xu
Km
Kdu
ˇz
Ps
Pay
A l bu q
16
14
23
˛muas 6
5
?
4
˛mu
18
42
11
˛mu
Qcr
˛mu
Km
˛ml
Middle to lower (?) Pleistocene piedmont/pediment gravels—Unconsolidated coarse gravely sand, 15 ft (~4 m) thick; caps
ridges west of mouth of Arroyo San Antonio (T10N, R5E, sec.14). Larger clasts include abundant limestone cobbles. Unit is more
widespread to the west (see Tijeras 7.5’ quadrangle) where it is considered to overlie a former pediment developed on the eastern
dip-slope of the Sandia Mountains.
QHa
˛mu
88
ˇm
7,000'
˛ml
˛s
A S I N
15
16
˛mu
85
Kms
Pg
˛mu
˛mu
˛s
Kms
Jet
˛ml
Pg
B
25
˛muas
Qpm3
Upper Pleistocene stream and piedmont alluvium and colluvium along Arroyo San Antonio—Sandy gravel and silty sand,
3 to 10 ft (1 to 3 m) thick. Unit caps discontinuous bench 40 ft (~12 m) above modern floor of Arroyo San Antonio. Soils on
deposit exhibit stage II calcic horizons.
Kvs
S T A N C I
A
31
Pa
15
˛muas
10
30
?
5
4
QHa
Qay
86
2
˛mucc
Qpo
Qay
4,000'
Holocene to middle Pleistocene (?) hillslope colluvium, residuum, and alluvium in upland interfluves and valley backslope
areas—Predominantly sandy, clayey silt with varying amounts of gravel. Ranges from <3 ft (1 m) to 10’s of feet in thickness. Unit
differentiated in upland areas isolated from major valleys. Derived from weathering of limestone, sandstone, and shale of the
Madera Group (residuum on relatively flat-laying, limestone ledges), and from downslope movement of these materials . Mapped
where accumulations cover extensive areas.
Qcr
Qay
1
af
Qay
Holocene to upper Pleistocene valley-fill alluvium and colluvium graded to former, higher levels of Arroyo San
Antonio—Up to 13 ft (4 m) thick. Unit is significantly disturbed in places along Highway 14 due to road and building
construction.
Kvt
Km
Km
Ps
1
2
8
Qc
Qcr
˛mucc
˛muas
˛mu
2
?
QHa
25
˛ml
?
12
4
˛muas
45
42
49
52
27
˛muas
82
7
5
˛muas
˛mu
10
21
3
QHa
38
Jm
˛mu
˛mu
Pay
Ps
Kvt
Kvt
Kvs
ˇc
Pg
Kvs
Kvt
Kvt
E
25
QHa
QHa
43
41
5
˛muas
9
74
˛mu
80
86
QHa
QHa
Km
5,000'
8,000'
Pay
St G Tije
ru ut ra
ctu ier sra re
lZ z
on
e
31
31
5
38
Qay
ˇu & Jm
7,000'
6,000'
Gutierrez
fault
Jet
A
18
4
3
4
?
˛muas
QHa
˛mlas
74
25
7
50
57
10
76
Qfc
˛mucc
QHa
Tijeras
fault
ˇc
Holocene to middle Pleistocene (?) valley-fill alluvium and colluvium—Predominantly silty, pebbly sand with increasing gravel
content towards valley backslopes; clay content higher in valleys bounded by limestone and shale bedrock units. Ranges in thickness
from a thin mantle on valley backslopes and bedrock highs to 30 ft (10 m). In western part of map area unit is graded to local
base levels that predate latest Pleistocene/Holocene incision of trunk drainages. Unit forms an extensive alluvial cover in intermontane
valleys in the eastern map area. Unit is locally subdivided along Arroyo San Antonio (unit Qaysa), where it is locally overlain by
gravely deposits of Qpm3, and in northeastern part of map area, where remnant depositional surfaces have survived subsequent
incision of valley fill.
Holocene to Upper Pleistocene small alluvial fans and colluvial wedges along Arroyo San Antonio and Tijeras Arroyo—
Silty sand and gravely sand, 3 to 13 ft (1 to 4 m) thick. Unit occurs near mouths of tributaries to trunk drainages.
.
.
Holocene to middle Pleistocene (?) hillslope colluvium—Poorly sorted accumulations of clay, silt, sand, and gravel, up to several
meters thick, deposited by mass-wasting, slope wash, and fluvial transport in steep hillslope drainages. Mapped primarily on slopes
developed in clastic sedimentary rocks along I-40.
QHa
Qay
? 7 ˛mu
87
Qca
˛mucc
Qcr
12
Qay
EDGEWOOD 4 MI
SANTA ROSA 88 MI.
13
˛muas
39
43
11 8
7
4
23
35 20
53
˛muas
28 16
8
1
Qay
4
3
˛mu
˛muas
Water
Tank
˛muak
1
QHa af
2
11
4
8,000'
Upper Pleistocene valley-fill alluvium and colluvium, underlying high (pre-incision) valley-fill depositional surfaces
in northeastern part of map area—Younger valley-fill deposits and alluvium associated with modern drainageways are
inset into surface. Soils developed on this surface exhibit stage III calcic horizons, suggesting that incision of valley fills in
eastern map area and abandonment of surface occurred during latest Pleistocene time.
QHa
(EDGEWOOD)
23
•••
ne
18
45
15
16
14
24
15
21
18
QHa
s yn
cl i
ras
30
12
Pay
7
20
Tmi
˛muas 7
83
10
3 3
9
3
26
Pa 28
20
12
2
3
˛mu
68
3
˛mums
Qcr
˛mu
4
Qaysa
2
Qcr
˛mucc 3
llll
07
˛muas
1
˛muas
4
ll
˛muak
˛muas
Water
Tank
2
˛mu
QHa
QHa
Qcr
af
Qay
QHa
•
••
••
28 Kvs 15 15
11
25
11
11 Pay
Qpo 14
af
QHa Qca
10
16
5
15
16
23
18
18
19
55
?
l l l l ll
••••
13
Qpo
16
27
Pay
28
19
8
6
5
o
m
ha
C ˛ml
80 ?
28
26
is
QHa ˛muas
˛muas
26
Pay
71
73 QHa
˛mlas
23
Pay
11
14
17
QHa
4
•
••
••
Qca 11
Qca
3
26 33 32
12
QHa
19
20
14
17
20
24
Pay
?
?
•
••
30
Pay
25
60
39
15
27
Qfc
6
18
19
82
˛mu
7
•••
••••
••
•
•
••
••
••
af
QHa1
Qpo
QHa
35
Pay 8
27
Pay
Pay
Tmi
32
˛muas
˛mu
Pac
65
15
86 13
Qca
•
••
Py
• • 19
•
63
• • 23
18
36
28
Pay
60
Pys
QHa
32 72
QHa
13
13
11
22
20
7
Tmi
46
30
Pa
?
••
•••
26
28
G
66 65
23
Kvm
•
••
••
••
••
••
••
••
••
••
••
••
••
••
19
ie
Pay
Pys
31
af
25
29
QHa
33
74
30
ll
l lll
30
18
27
45
ut
Km
26
37
Qay
6
21
˛mucc
˛mu
lll
18
24
18 42
ez
r r Qay
21
19
20
af
33
Km
30
30
Tmi
QHa
QHa
20 26
˛ml
3
˛muak
ll
22
32
9
16
20
18
Pay
?
7
?
˛mu
6
ll
Kvs
20
67
Pay
25
?
?
QHa 34
28
24
?
3
˛mucc
˛mucc
ll
26
Kvt
7
28
65
25
17
˛muas
3
?
˛muas
3
3
2
3
ll
Kvs
Km
t
22
15
36
QHa
˛mucc
3
4
3
?
QHa
24
QHa
˛mu
2
85
38
4
˛muas
˛mums
1
4
ll
Qay
25
ul
fa
QHa
47
6
34
25
25
45
46
?
Pay
1
1
˛muas
2
4
80
?
5
˛mu
••
•••
82
30
41
17
Km
15
Psg
43
6
?
48
?
4
2
2
2
ll
Kg
16
Kvt
14
12
58
67
43 38 17
Qay
3
2
2
1
10
QHa
1
6
4
QHa
2
ll
Qca
21
30
40
24
22
QHa
40
32
26
37
18
35
26
Qay
1
ll
Kvt
Km
Qay
Pac
af QHa
41
44
49
38
Pay
33
1
1 500 000
FEET
˛mu
19
5
Qay
Qca 85
87
Qay
af
5
11
˛muas
QHa
˛muas
6
4
Qay
2
Valley-Fill Alluvium
9,000
feet ASL
ˇz
2
˛mu
1
ll
75
Qaysa
13
85
Km
26
˛mu
•
••
••
24
Km 22
Qtv
Km
22
Su3
18
38
Qca • • •
41 •
• Pay
31
Ps
55
3
5
˛mucc
4
˛mucc
˛mu
Qay
11
?
3
16
?
43
29
32
23 26
29
8
85
QHa
Qay
ll
29
48
19
20
22
17
Ps
33
22
25
8
4
4
2
˛mucc
˛muas
15
48
65
QHa
45
45
12
48
ll
76
78
29
ˇm
37
67
˛mu
˛muas
4
2
QHa
˛muas
5
˛mu
Qay
ll
76
Km
Kvt
36
QHa
9
Kvs
12
QHa
Su2
QHa
25
21
Kvs 19
40
Qay Pg
ˇm•
Pg • • Pg
• 48
32
?
cli
QHa
Km
9
20
24
8
17
Pg
Qay
25
27
32
˛mu
13
Qay
5
4
8
˛mu 67 65
13
52
?
29
31
no
26
18
27
42
Ps
43
78
46
46
27
9
72
85
2
2
˛muas
47
17
30
39
˛mu
42
44
34
2
1
˛mu
18
38
1
2
8
33
30
Pac
3
10
Qay
U D
Qay
2
˛mucc
QHa
55
33
2
Qay
7
21 5
36
36
30
mo
13
60
•
Km
18
af
33
27
35
38
37
Km
50
Pg
Km 3440 Pg
Kms • 40 42
Pg
Kvs
13
Qay
30
Km
33
Kvt
28
Km
25
•7 •
••
34
39
54
Km
39
38
30
36
so
62
Qpm3
22
ALBUQUERQUE 17 MI.
TIJERAS 1.5 MI.
••
21
17
20
20
Pg
Ps
3
32
33
45
˛mucc
85000m E.
QHa
QHa
QHa
3
8
37
29
••
1.3 MI. TO I-40
TIJERAS 1.5 MI.
13
29 7
77
85
Qay
26
Kvs
Qaysa
38
19
10
23
19
20
18
21
QHa
Su1
Km
Kvm
6
50
Qpm3
30
13
Qay
12
11
20
Qay
28
5
˛mu
6
17
Pay
Pac
˛mu
106° 15'
35° 07' 30"
3
84
2
2
3
˛muas
34
34
3
490 000 FEET
17' 30"
˛muas
10
Qcr
82
˛muas
af
6
31
48
QHa
26
25
Qay
23
24
33
26
Km Pg
••
••
••
30
Km
86
22
18
Km
67
14
11
Kvt
38
20
32
Kms
32
•
39
62
30
••
•
•• •
78
Km 13 32
28
12
Km
49
42
35
QHa
15
27
Pg
Ps
20
12
18
22
Pys
30
58
Km 37
18
•
Qca
38
Qca
12
28
Qca
17
Qca 9
Km
Km
Kms 43
Km
Qay
Qay
QHa
••
•
QHa
4
3
Kvs
28
24
Kvs 18
Ti je
4
43
71
Tije ras
dar
Kvs
25
Qca4 2 5
4
3
6 6
36
29
18
15
19
12
32
Kvm
16
Kvs 15
Kvt
15
24
16
23
27
34
5
17
12
Ce
30
40
a nticline
cli
s yn
t
es
7
13
12
14
23
19
81 Qpm
3
Qaysa
14
Cr
31
Qfc
16
17
•
•
•
•
•
•
•
•
•
•
•
•
•
•
• • • •••
•••
••
•
••
••
••
••
••
ˇc
Qpm3
ne
f a• u• •
lt • • •
••
•
••
T•i • •
jer• •
as • •
• •
35
Qaysa
58
10
Kvs
61
Qca
40
20
13
Kvs
5
10
32
ˇc
7
3
QHa
llllllll
52
07000m N.
58
QHa
Kvt
7
˛mu
45 50
lll
Qfc
49 67
42
Kvm
43
5
••
25
10
39
••
••
•
•
••
••
•
••
••
27
10
49
Qay
ll
80
ˇc
3
22
Kvt
Kvs
QHa
Kvt
Kvs
•Km•
Pg
• Ps
59
•
•
QHa
•
43
••
Km
•
••
t ••
l
Pay
u •
f a• •
• Pg
27
Qay
81
l ll
44
Kvt
SANDIA PARK 5.9 MI.
3
(SANDIA PARK)
llll
ll
49
20
••
A
10
Kvt
Qaysa
79
ll
ˇc
Qaysa
78
12
22
3
20'
3
R. 5 E. R. 6 E.
18
20
QHa 12
76
••
••
••
ˇc
3
•
•••
•••
•••
•••
•••
•• •
• • • ••
••••
•• ••
• • • •• ••
75000m E.
ll
ll
SANTA FE 53 MI.
MADRID 27 MI.
3
9,000
feet ASL
S
T
ES
CR
NEW MEXICO
A'
SE
Surficial Units
Artificial fill—areas affected by human disturbance, including dumped fills, quarries, and areas that have been extensively modified
by road construction.
Holocene alluvium underlying present drainageways. Includes arroyo channel and floodplain alluvium and adjacent terrace
deposits. Unit may include bedrock outcrops in scoured channel reaches. Deposits generally consist of silt and sand with varying
amounts of gravel and clay. Stream and floodplain deposits range in thickness from very thin to 10 ft (3 m). Terrace deposits range
in thickness from 3 to 13 ft (1 to 4 m), with treads 6 to 26 ft (2 to 8 m) above modern channel. Straths underlying terraces may
be cut into older valley-fill alluvium or into bedrock.
QHa
A
NW
TAIN
A
DI
AN
(S
SEDILLO QUADRANGLE
106° 22' 30"
35° 07' 30"
G EOLOGIC C ROSS S ECTIONS
Su3
EMA
UN
Dr. Peter A. Scholle
Director and
State Geologist
AT
MO
y
O
tur
MA N Z AN
n
n ce fo r t h e 21st Ce
(S
AN
Sc ie
GR
T
S
rth
I
Arr
o
Me x i c o
ME X
W
P
Ne w
Ea
lR
e
NE
i n e s & Mi n e r a
CO
a
fM
uo
NMBMMR Open File Map Series
OF–GM–20
Map last modified 14 February 2000
MEXICO INSTITUTE OF MINING & TECHNOLOGY
ces
ur
so
NM B
ur
e
A DIVISION OF NEW
Xms