0
80
70
85
85
89
80
74
49
66
39
3830000
50
89
60
78
82
Qay?
85
80
Qay?
70
89
75
75
70
75
75
40
75
63
49
23
37
24
52
66
0
56
Qay?
Qay Qa1
22
Pb
0
25
14
45
40
Qay
Pb
51
3825000
Pwc
Xes
65
Qay
Qa
Qp1
Qa
70
0
73
Xla
Xla
Qa
Qa
Xra
45
Pwm
Pwc
Pws
Qa
Qa
Qp2
84
Ps
Pb
Qa
Qa
85
70
0
45
Qp2
Qa
70
50
60
Pa
Pb
50
Qa
Qa
Qa
Xa
86
Ps
Xla
0
Xes
Pws
Ypp
78
76
Pb
Qa
74
60
Ps
81
Qa
Qa Qa
Qaa Qa
Qa
Qa
63
78
70
87
5
85
Qa
Plm
55
Ps
Pb
Pwc
Qaa
Qa
Pb
Qa
55
60
Qa
Pb Qa
Qp2
Qa
Pb Qaa
Pb
Pb
365000
Base from U.S.Geological Survey 1986, from photographs taken 1980 and field checked in 1982.
Map edited in 1986
1927 North American datum, UTM projection -- zone 13N
1000- meter Universal Transverse Mercator grid, zone 13, shown in red
Tome NE
Capilla Peak
366000
367000
106°27'30"W
Manzano Peak
Abo
368000
369000
370000
106°25'0"W
371000
372000
373000
Scholle
Xsq Sais Quartzite: Thin bedded reddish schistose quartzite however cleaner than Xqs.
Bedding planes commonly show mica concentrations. Grains size ranges from very fine to
coarse sand. Primary structures include preserved cross bedding. Originally called the White
Ridge and Sais quartzites of Myers and McKay (1974), called the White Ridge Quartzite 2
(wq2) of Bauer (1983).
Magnetic Declination
July, 2004
10º 6' East
At Map Center
Xs
Abajo Schist: Schistose metasedimentary rocks intruded by or interlayered with mafic
meta-igneous dikes and flows. The metasedimentary rocks are rich in staurolite, garnet and
amphibole porphyroblasts. Possible protoliths could be siltstones. Correlated with the
Lower part of the Pine Shadow Springs of Myers and McKay (1974). Equivalent to units A,B,C
of Parchman (1976) and Bosque metasediments of Edwards (1976)
374000
Older stream alluvium
Qpa
Qp2
Piedmont deposits and easter
slope equivalents
Qpm
Qp1
Middle Piedmont deposits
and easter slope equivalents
Older Piedmont Deposits
Pa
Abo Formation
Pb
Bursum Formation
Pwc
Wild Cow Formation
Pws
La Casa
Pwm
Pine Shadow
Plm
Sol se Met
Ps
Sandia Formation
Ypp
Yqv
Xml
Xa
Ypeg
Priest pluton, quartz veins
and pegmatite dikes
Monte Largo Pluton and
related gabbroic dikes
Xbsu
Blue Spings
Upper Schist
Xbr
Blue Springs
Rhyolite
Xbq
Blue Springs
Quartzite
Xbs
Blue Springs
Schist
Xsq
Sais Quartzite
Xws
Estadio Schist
Xs
Abajo Schist
Xla
Abajo Lithic
Arenite
Xd
Lacoracah Dacite
Xa
Amphibolite
Xsr
Sevilletta Metarhyolite
Xtg
Tijeras Greenstone
East
A'
West
14,000
14,000
A Manzano Peak Quadrangle
13,000
13,000
12,000
12,000
Inferred Precambrian
geometry before
Precambrian erosion Projected Post- Laramide
Geometry
and Phanerozoic
Deposition
Xbsu
1:24,000
0.5
Xbr
1
1.5
2
0.25
0.5
1
1.5
2
Kilometers
Xbs
10,000
Miles
DRAFT
NMBGMR OF-GM 00
Xla
11,000
Xwq
Xbsu
10,000
Xbs
9,000
9,000
Xsq
Xbr
Xbr
8,000
8,000
Plm
Ps
Xbr
Xbs
Xa
Xla Xa
Xla
Xa
Xes
Xa
Xa
Xa
Xla
Pa
Xla
Xd
Xla
Xla
New Mexico Bureau of Geology
New Mexico Tech
801 Leroy Place
Socorro, NM 87801-4796
[505] 835-5420
http://geoinfo.nmt.edu
This and other maps are available in PDF format from:
http://geoinfo.nmt.edu/statemap
or contact:
NMBGMR Publications -- [505] 835-5410
NMBGMR Geologic Information Center -- [505] 835-5145
Pb
Pwc
Pws
Pwm
Plm
Xs
Xa
Xbs
Xes
Xa
Xwq
Xsq
7,000
Xml
This draft geologic map was produced from scans of hand-drafted originals from
the author(s). It is being distributed in this form because of the demand for
current geologic mapping in this important area. The final release of this map will
be made following peer review and redrafting in color using NMBGMR
cartographic standards. The final product will be made available on the internet
as a PDF file and in a GIS format.
3,000
6,000
6,000
5,000
Xml
5,000
Tsf
Xsr
Xml
Xsq
Xa
2,000
Xs
Xa
Xla
1,000
Xla
2,000
1,000
Xsq
-2,000
-2,000
?
?
Xpp
Xwq
Xa
Xla
Xa
Xla
Xs
Xa
500
Xwq
Xla
Sea Level
Scale
- 1,000
?
1,000
Xsr
- 1,000
?
Precambrian Basement Rocks
Xsr
Sea Level
Sea Level
Plm
?
Xsq
3,000
Xla
Xa
2,000
Ps
Xtg
Xwq
3,000
Xla
Xa
Xla
1,500
4,000
Xsq
Pa
Pb
Pwc
Pws
Pwm
?
Xbs
Xsq
4,000
2,500
Ps
Xa
7,000
This work was performed under the STATEMAP component of the USGS
National Cooperative Geologic Mapping Program. Funding was provided by the
U.S. Geological Survey and the New Mexico Bureau of Geology and Mineral
Resources, a division of New Mexico Tech.
3,500
Xbq
Xbsu
Xsq
Xa
Xa
4,000
Pa
Pb
Pwc
Pws
Pwm
NATIONAL GEODETIC VERTICAL DATUM OF 1929
The map has not been reviewed according to New Mexico Bureau of Geology and Mineral
Resources standards. The contents of the report and map should not be considered final and
complete until reviewed and published by the New Mexico Bureau of Geology and Mineral
Resources. The views and conclusions contained in this document are those of the authors and
should not be interpreted as necessarily representing the official policies, either expressed or
implied, of the State of New Mexico, or the U.S. Government.
Qay
Manzano Peak Cross-Section
Shannon Baer
2004
11,000
CONTOUR INTERVAL 40 FEET
Cross sections are constructed based upon the interpretations of the author made from geologic
mapping, and available geophysical, and subsurface (drillhole) data. Cross-sections should be used
as an aid to understanding the general geologic framework of the map area, and not be the sole
source of information for use in locating or designing wells, buildings, roads, or other man-made
structures.
Stream Alluvium
Xwqa White Ridge Quartzite with
Xwq
alumnoschist layer
Xla Abajo Lithic Arenite: This unit consists of a variety of metasedimentary rocks including
meta-pelites, meta-arkose and impure quartzite. The chlorite schist, and some quartzites
interbedded with metarhyolite are thinly bedded; more massive, quartzite domains are
locally dominant. Locally, garnet staurolite schist and may be related to the intrusion of
gabbroic dikes (now amphibolite). Compositional layering (S0) is commonly preserved and
is generally at low angle to dominant schistosity (S1). Correlated with the lower metaclastic
series of Reiche (1949), and the Flaggy Schist Zone of Myers and McKay (1974), Equivalent to
units A,B,C of Parchman (1976) and Bosque metasediments of Edwards (1976)
Xsq
Abo
A geologic map displays information on the distribution, nature, orientation, and age relationships
of rock and deposits and the occurrence of structural features. Geologic and fault contacts are
irregular surfaces that form boundaries between different types or ages of units. Data depicted on
this geologic quadrangle map may be based on any of the following: reconnaissance field geologic
mapping, compilation of published and unpublished work, and photogeologic interpretation.
Locations of contacts are not surveyed, but are plotted by interpretation of the position of a given
contact onto a topographic base map; therefore, the accuracy of contact locations depends on the
scale of mapping and the interpretation of the geologist(s). Any enlargement of this map could
cause misunderstanding in the detail of mapping and may result in erroneous interpretations. Sitespecific conditions should be verified by detailed surface mapping or subsurface exploration.
Topographic and cultural changes associated with recent development may not be shown.
Qa
The Great Uncomformity
Xwq White Ridge Quartzite: Course grained impure orange to gray thin-bedded aluminous
quartzite. Fairly immature metasedimentary rock with well preserved cross bedding. Crossbedding indicated that the bedding is overturned. The upper part of the unit has a distinctive andalusite –muscovite (Xwqa) foliated schistose layer. This unit forms the western limb
of the Estadio Canyon fold. This may represent the base of a generally fining upward
sequence of sediment. Part of the Lower part of the Pine Shadow Springs of Myers and
McKay (1974); called the White Ridge Quartzite 2 (wq2) of Bauer (1983).
Xbsu
0
Active Stream Base
Uncomformity
Xes Estadio Schist marker unit: staurolite, garnet biotite schist unit forms the main anticline exposed in Estadio Canyon. It is a coarse grained schistose unit. The schist’s shows
multiple episodes of deformation and contains local crenulation cleavage and at least three
generations of foliation. Probably originally deposited as a mudstone layer within the sandstone. Equivalent to the Lower part of the Pine Shadow Springs of Myers and McKay (1974);
called the White Ridge schist (ws1) of Bauer (1983).
106°22'30"W
by
Shannon Baer, Karl E. Karlstrom, Paul Bauer, Sean D. Connell
0.25
Qaa
Qpo
Torreon
Punta De Agua
Correlation of Map Units
Xbs Blue Springs Schist: Green to white schist near the Priest pluton this rock contains,
garnet, chlorite, quartz muscovite. Just west of the synclinorium, this unit is highly kinked. It
is appears as a beautifully crenulated schist with well preserved garnet. Near the Priest
pluton sericite nodules are common and probably formed during retrograde metamorphism after emplacement of the pluton. Equivalent to the part of pCa, the argillite of Myers
and McKay (1974) and the Sais Quartzite (sq3) of Bauer (1983)
3818000
Geologic Map of the Manzano Peak 7.5 - minute quadrangle
0
Becker
Xbqr Blue Springs Red Quartzite: Red to pink in color, massive resistant hematitic quartzite.
This single isolated bed of quartzite forms the ridge on the east side of the Manzano Peak
synclinorium. Although the bed is well defined because of the color and resistant nature of
the unit, it is not a continuous bed. Equivalent to the part of pCa, the argillite of Myers and
McKay (1974) and the Sais quartzite (ss3) of Bauer (1983)
Plate 2
34°30'0"N
July 2004
Tome SE
Xbq Blue Springs Quartzite: Thin bedded medium grained quartzites interbedded with
chlorite-muscovite schist and quartz-muscovite schist. Partly equivalent to Sais Formation
and lower part of the Pine Shadow Springs of Myers and McKay (1974); mapped as Blue
Springs Formation (bs1) by Bauer (1983).
Qa
Qa
3818000
364000
Xbr Blue Springs Rhyolite: Black and brown to gray with lenticular quartz-feldspar pink
colored stripes within the darker unit. This is interpreted as a metaryholite because of the
presence of potassium feldspar in the felsic lenses and geochemical composition close to
rhyolite. Numerous folds, some of which may be reminiscent of a rhyolitic flow folds, others
are clearly F1 folds that are then refolded by later generations of deformation. Equivalent to
the part of pCa, the argillite of Myers and McKay (1974), named the Blue Springs Quartzite
(bq1) by Bauer (1983).
Qaa
Scholle
363000
Xsr Sevietta Metarhyolite: Felsic meta-igneous rocks with quartz and feldspar phenocrysts interpreted as metarhyolite. The metarhyolite is generally pink to gray, blockyfracturing porphyritic aphanites with quartz and feldspar clasts ~1mm in diameter. Texture
ranges from thin, well developed compositional banding to massive. Planar features, such as
flow bands or shear bands, are common and range considerably in thickness, ~1mm-~5cm.
Quartz veins, pegmatite and massive schistose units are present locally and generally parallel foliation. Equivalent to the Sevietta metarhyolite of Reiche (1949) and Myers and McKay
(1974).
Qa
Becker
106°30'0"W
Xbsu Blue Springs Upper Schist: green to white chlorite muscovite schist. This rock is
eroded out of the Manzano Peak synclinorium, but is found north of the Monte Largo thrust
in the northwest corner of the quadrangle. Equivalent to the Metaclastics Series pCm of
Myers and McKay (1974).
3819000
Qa
Qa
Pwm Qa
Xa
Amphibolite: Black to dark green, fine- to coarse-grained amphibolites with varying
amounts of macroscopic white plagioclase that ranges in texture from salt and pepper to
smeared-out shear banding. Coarse-grained metadiorites are present locally. Mafic units
have apparent widths up to 150+m and may thicken, thin, fork, and pinch out along strike.
Equivalent to the pCb “basic schist” of Myers and McKay (1974). May be confused with the
intrusive gabbro described above, but some units may be part of the supracrustal sequence.
These were mapped as Basic Schist and Mixed Flow units by Myers and McKay (1974) and as
non-rhyolitic components of the Sevilleta Formation by Bauer, 1983).
Qa
Pb
89
90
34°30'0"N
Qay
Pb
85
Qa
Qaa
Qa
Qa
Ps
Plm
Xwq Xsq
Xes
Qa
Qa
Qa
3820000
Qa
Qa
Qa1
Qa
Pwm
Pws
Qa
Qa
Pb
10
75
81
Qp2
55
Qa
48
70
Qay
Pwc
Qa
lPlm Los Moyos Formation: This unit is a cliff-forming, gray fossiliferous limestone with
minor interbedded shales and quartzose to feldspathic sandstones and conglomeratic
sandstones. Individual massive to nodular limestone beds are commonly ~7-10m thick and
may reach ~20m. Irregular masses of black to reddish-orange chert are common in massive
limestone beds. Nodular limestone often weathers to mottled gray and brown surfaces.
Limestones are interbedded with light to dark gray and yellowish brown to greenish gray
siltstones that are often micaceous. Siltstones locally grade up into lenticular to tabular
quartz arenites and quartz pebble conglomerates of light gray to yellowish brown color.
Clastic units locally contain silicified wood. Includes Los Moyos Limestone and Sol se Mete
Member of Wild Cow Formation of Myers (1973). Pml and Pmub units of Myers and McKay
(1974). Approximate thickness: 150-250m.
Qay
Pwm
80
Xes
Xa
Xwga
XaXa Xa
Xla Xwga Xwga
XrXla Xla
XaXa Xwga Xsq
Xg
Xwga
Xa Xa Xa
Xa
Xwga
Xa Xwga
XaXa
Ya
Xr XaXla
Xsq
Xes Xes
Xa Xwq
YpYp
Xsq
Qpm XaXla XaXla
Ya
XaXwga
Xwq Ypeg
Xwga
0
Xwga
Xla Xwga
Xwga
Xa
Xwga
Xwq
Xwga
Xes
Qpa
Xsq
Xwga Xsq
Xa
Xes Xes
Xwq
Qaa
Qaa
Plm
Xr
3821000
0
Xla Xa
Xa Xla
Xa
XlaXa
Xla
Qa
XlaXaXa Xa
Qpa
3822000
PwsPwc
70
3821000
Qa
Qa
lPwc Wild Cow Formation: Interbedded arkosic conglomeratic sandstone, sandstone,
siltstone, mudstone, and limestone, mostly slope to ledge forming. Yellowish to reddish
brown and light gray arkosic to feldspathic sandstone and conglomeratic sandstone are
lenticular and grade into pale yellow-brown, gray and purple-gray mudstones and micaceous siltstones. Clastic units locally contain silicified wood. Tabular, ledge-forming, light to
dark gray, fossiliferous limestones are commonly interbedded with mudstones and may
locally contain feldspathic detritus. Red muddy soils are common on the upper arkosic
member. Generally equivalent to Pine Shadow and La Casa Members of Wild Cow Formation of Myers (1973) or Pmuc and Pmud of Myers and Mckay (1974). Variable thickness of
400-600ft (~120m), with erosional top.
Qaa
Pa
Qa
70
Xa
Xsr Xa
Xla
Qp2
50
Qpa
lPm Madera Formation, undivided (Pennsylvanian to Lower Permian?) (lPmu +lP ml).
Qa
Plm Pwm
Xes
XaXa
Xs
Xla
Xla XaXa
Xa
Xa
Xla Xla Xla
Qaa
Ps
50
Xps
Xsr
Qp2
Qa
60
3822000
90
Qpm
PALEOZOIC
Qa
Qa
Qa
77
Xa
Xla
Xd
XsXla
Xs
Xa
Xsr Xa
Xa
XaXla Xa
XpegXa
Xa
Xla
Xa
Qpa
54
Qpa
Qpa
3823000
Qp2
34°32'30"N
89
Qpa
Xla
Xs
XaXlaXla
Xa
Xa
0
Xsl
Pb Bursum Formation: Reddish-brown, arkosic, hematitic, cross-bedded, locally conglomeratic, but dominantly fine-grained sandstone. Lower part has red shale and siltstone. Base of
formation mapped at top of highest limestone bed.
Qp1
Plm
77
Xsr
3823
3819000
Pb
45
34°32'30"N000
3820000
Qaa
Xwq
Yqu
Yqu
Yqu
Yqu
Xa
65
3824000
Qa
60
Xa
Xla
Xla XaXa
Xa
54
Xla Xd
Qay
Xwq
Abo Formation: Red shale, pale-reddish-brown to moderate-reddish-orange fine
Pa
grained sandstone, and grayish- to dusky-red crossbedded arkosic sandstone and conglomerate. Upper beds of formation absent in quadrangle. Base of formation mapped at top of
highest marine limestone bed. Thickness: >300ft. (Myers and Mckay, 1974).
Qa
89
Xla
Qa
Xes
Xbq
50
70
Qpm
Xsq
48
68
65
38
XaXa
Xla
Qpa
Qpo?
50
78
Xa
Xa
Xla
3824000
38
65
60
Xa
Qp1
Qa
Xbs
Xml Monte Largo Granite: Variably deformed granodiorite, quartz monzonite, and granitic
rock. The granodiorite is medium-grained and consists of altered feldspar (30-40%, much
sericitized), quartz (20-25%), chloritized biotite, rare hornblende (altered to chlorite and
biotite), and epidote. Minor phases include calcite, apatite, zircon, tourmaline, and altered
sphene. Mafic enclaves are common in the granodiorite; pegmatites are rare. U-Pb zircon
date of 1656+/-10Ma (Bauer et al., 1993).
PERMIAN
Qa
Xbr
46
Qp1 Eastern-slope deposits (lower to middle Pleistocene) – Poorly to moderately consolidated gravel and sand. Forms moderately dissected, southeast-sloping remnants of a
formerly broad piedmont along the northeastern portion of quadrangle. Constructional
tops range from about 335-525 m above local base level. Base poorly exposed and probably
less than 6 m thick.
Qaa
Xwq
69
Xs
Qay
Pws
58
62
Pa
Plm
20
Qp2 Eastern-slope deposits (middle Pleistocene) – Poorly consolidated, cobble to boulder
gravel and sand. Forms moderately dissected, southeast-sloping remnants of a formerly
broad constructional surface that is about 50 m above local base level and is topographically lower than deposits of Qp2. Deposits are dominated by pebbly to locally bouldery
gravel containing abundant pink granite of the Priest pluton. Base poorly exposed and probably less than 6 m in thickness.
3826000
Manzano Peak
35
32
Qay?
Pwc
43
Xa
Xa
3827000
56
87
85
Xa
Xa
Qp1
Pb
35
35
60
60
57
75
53
58
38
52
36
57
Xbq
Qpa
Qp1
37
40
28
45
Qpo Older Piedmont deposits (lower to middle Pleistocene) – Poorly consolidated, clastand matrix-supported gravel and sand with sparse silt and clay. Deposits are dominated by
pebbly to locally bouldery gravel containing abundant granite and metamorphic rocks.
Forms deeply dissected hills near western front of Manzano Mountains where unit may
represent younger aggradational units of the Santa Fe Group. Base not observed west of the
Manzano Mountains, but is at least 6 m thick.
Ps
45
Xes
34°35'0"N
24
Xs
Xsr
0
29
64
47
46
0
Xbs
Pwm
71
50
30
42
0
59
54
59
64
Pwm
Pws
Plm
Pwc
74
47
74
26
26
63
38
73
42
Pwm
0
52
Xwq
Xla
3825000
3828000
Pws
Pwc
73
77
Xa
77
Xa
73
20
34
36
59
85
54
72
43 44
33
77
35
87
30
62
79
Xa
69
Qay?
90
Xla
88
Xa
Xa
Qpm Middle piedmont deposits (middle Pleistocene) – Brown to dark yellowish-brown,
poorly consolidated, poorly sorted, cobble to boulder gravel and sand. Forms broad, slightly
dissected constructional surfaces that are inset against unit Qpo. Deposits contain clast- and
matrix-supported gravels. Soils are moderately to strongly developed. Base not exposed, but
is at least 3 m in thickness.
0
85
0
82
53
79
89
89
51
74
Xa
3827000
Qay?
Plm
68
Xa
Xr
Qay?
25
67
76
74
3826000
3829000
54
82
Tome SE
Qpa Piedmont deposits, undivided (Pleistocene-Holocene) – Undivided deposits of units
Qa, Qpm, and Qpo. Mostly clast-supported gravel and dominated by granite and metamorphic rocks exposed east of the Manzano Mountains drainage divide. Deposits are locally
matrix-supported near mountain front. Locally entrenched near mouths of mountain-front
drainages. Base not observed west of the mountain front. Estimated thickness ranges from 1
m to more than 10 m.
0
53
83
Xsq
Xs
Xla
Qpa
Qp1
Qaa
84
55
62
68
41 4
1
63
66
75
Xa
22
42
Qay?
58
65
44
8
Xla
46
Xr
Qaa
Xwq
70
55
75
4
72
76
68
Xa
0
Xla
31
20
66
Xsr
68
35
57
Qpo
34°35'0"N
16
58
qpa
Xa
56
Xa
Xd
Xa
Xa
89
Xla
Qpo
66
Xa
89
qpa
10
86
Xla
Qpm
3828000
52
58
Xq
Xr
25 Xbs
3829000
56
60
55
74
52
6
60
38
Qpa
Xbs
43
0
Xr
Qay Younger stream alluvium (upper Pleistocene-Holocene) – Brown to reddish-brown,
poorly consolidated, subhorizontally bedded, poorly to moderately sorted, matrix- and
clast-supported silty sand and sandy gravel. Recognized in larger drainages of the eastern
dip-slope of the Manzano Mountains where it underlies broad valley floors about 3-6 m
above incised active streams of units Qa and Qaa; commonly contains undivided deposits of
unit Qa. Colluvial deposits present near the base of hillslopes near deposit margins. Base not
observed, but estimated to be at least 2 m thick.
Ps
78
72
75
Qaa
50
27
76
80
65
58
XrXbsu Qpa
Pa
40
Xq
Xa
77
59
19
Pa
77
83
64
51
67
44
55
64
20
Xr
3830000
89
Pa
60
63
Qa Stream alluvium, undivided (Holocene) – Commonly brown to reddish-brown, poorly
consolidated sand and gravel, locally inset by unit Qaa. Base is not observed and is at least 2
m thick.
Qaa
Quaternary
85
86
Xq
3831000
Qay?
40
47 48
19
Qay?
Plm
Xd Lacoracah dacitic tuff and breccia: Gray to black with pink flecks. Matrix is granular
and compositionally quartz with some potassium feldspar (pink flecks), and some rare plagioclase. Clasts range from mm to 3 cm and seem to be fairly well sorted with smaller clasts
clustered together and gradig into larger clasts. The clasts are dark gray to black, and are
mostly composed of biotite and hornblende. Correlated with the Lacorocah metatuff of the
Mount Washington Quadrangle originally named by Reich (1949) and described by Parchman (1976). Equivalent to one of the units of the pCb “basic schist” of Myers and McKay
(1974).
Xgb Metagabbro: Amphibolites interpreted to be meta-intrusive mafic igneous rocks,
probable protolith gabbroic dikes. The emplacement of the dikes may be related to intrusion of the 1.65 Ga Ojito pluton and other plutons to the north. Although the dikes are
common throughout the field area, they are dominant within a package of meta-lithicarenite and may be responsible for local contact metamorphism of these units. These were
mapped as part of the Basic Schist and Mixed Flow units by Myers and McKay (1974) and as
non-rhyolitic components of the Sevilleta Formation by Bauer, 1983).
Paleozoic
22
41
66
50
38
38
76
Xr
Qp1
38
19
20
Xbs
Xr
Pa
Pwm
16
22
Qp1
65
Xbsu
Xbs
Qaa Active stream alluvium (Holocene) – Commonly brown to reddish-brown, poorly
consolidated sand and gravel. Gravel contains abundant subrounded to angular granite and
metamorphic rocks in drainages along western front of the Manzano Mountains; to the east,
gravel contains granite, metamorphic, and dominantly reddish-brown sandstone. Deposits
occupy active stream valleys. Base is not observed and is at least 2 m thick
Pwc
70
78
Xs
Xa
Xa
Ps
Precambrian
80
Xbs
Quaternary
3832000
Holocene
90
90
28
Description of map Units:
34°37'30"N
60
53
87
Xr
Xa
Xbs
Qal
Qpa
374000
Pleistocene
31
83
68
40
47
32
57
35
Xa
Xa
Xa
Xr
Xr
Xr Xbsu
106°22'30"W
373000
30
60
Xq
Xbs
qpa
XaXa
Xa
Xa
XaXa
Xa
Xr
3831000
372000
Torreon
50
3832000
Xq
Xq
371000
Capilla Peak
Xq
Xq
370000
Permian
Tome NE
Xmlg
106°25'0"W
369000
Mesoproterozoic Pennsylvanian
368000
Paleoproterozoic
367000
Los Moyos Formation
366000
Blue Springs Formation
106°27'30"W
365000
Abajo Formation
364000
51
34°37'30"N
363000
90
106°30'0"W
Xsr
Xsr
1:24,000
1 inch = 2,000 ft