NEW MEXICO BUREAU OF MINES AND MINERAL RESOURCES
NMBMMR Open File Map Series
OF–GM–10
Map last modified 2 February 2000
NEW MEXICO INSTITUTE OF MINING & TECHNOLOGY
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R. 4 E.
3
(ALBUQUERQUE EAST)
3
58
59
3
1
MN
60
32'30"
0.5
1000
0
2000
3000
4000
5000
6000
7000 FEET
NEW MEXICO
12.5°
222 MILS
1
16 MILS
0.5
0
1 KILOMETER
QUADRANGLE LOCATION
CONTOUR INTERVAL 10 FEET
UTM GRID AND 1972 MAGNETIC NORTH
DECLINATION AT CENTER OF SHEET
62
Mapping of this quadrangle was funded by a matching-funds grant from the 1997 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.
Qya
Qrp, Qrp1-2, Qrpc, Qrps,
Qrpsm, Qrpm
Qfp9
Qfa
Qay
Q8
Qya
Qay2
Q7
Qya
Qrm
Qoa2
Qm
38
90
QTsa 2
QTsa
QTsa 1
QTsa 1
QHao
QTsa
QTsa 1
Qre
Qoa1
Qe
Q6
Qop
Qpo
Q5, Q4, Q3
Qop
Q2, QT1
Qu(?)s, Tm
West
Embudo
strand
Alameda
strand
D
• • •
• U• •
Fault—Tick showing dip; solid where exposed, dashed where approximately located, dotted where
concealed; ball and bar on downthrown side, upthrown (U) side differentiated from downthrown
(D) side where concealed.
.
Approximate trace of degraded fault scarp.
Strike and dip of bedding.
34
87
17
AM
Pegmatite dike, tick showing dip.
Dominant tectonic foliation or gneissic foliation, if chronology of fabric is unknown.
Aeromagnetic anomaly (interpreted from U.S. Geological Survey and Sial Geosciences, Inc., 1998).
We1
Water-supply well, including abbreviation.
Mo5A
Exploratory or groundwater monitoring well, including abbreviation.
No2
.
Narruss Realty No. 2 oil test well
89
1184
1390
nd
996
996
996
1520
nd
1693
1569
1590
1738
1613
1662
1613
1693
1303
nd
1310
1092
1224
1200
1020
1450
972
852
900
876
900
1703
1773
1345
1334
705
800
nd
528
540
516
70 M
nd
729
768
720
802
674
810
674
729
110 M
nd
50 M
468
528
528
348
728
672
492
636
504
640
721
921
725
726
QTsa
QTsa
QTsp**
QTsa
QTsa
QTsa
QTsa
QTsa**
QTsp, QTsa(?)
QTsp, QTsa
QTsp, QTsa(?)
QTsp, QTsa(?)
QTsp, QTsa(?)
QTsp, QTsa(?)
QTsp, QTsa(?)
QTsp, QTsa(?)
QTsp
QTsp**
QTsa, Tsal
QTsa
QTsa
QTsa
QTsa
QTsa
QTsa
QTsa
QTsa
QTsa
QTsa
QTsp, QTsa
QTsa
QTsa
QTsa
T
K
K
(gal/d/ft)
(ft2/d)
(ft/d)
(m/d)
nd
nd
nd
157
129
124
nd
nd
nd
25
55
20
87
nd
26
35
nd
nd
nd
83
47
66
47
80
138
139
nd
147
109
19
nd
114
95
nd
nd
nd
2808
2307
2218
nd
nd
nd
447
984
358
1556
nd
465
626
nd
nd
nd
1484
841
1180
841
1431
2468
2486
nd
2629
1949
340
nd
2039
1699
nd
nd
nd
412,000
418,000
366,000
nd
nd
nd
54,000
143,000
36,000
318,000
nd
48,000
72,000
nd
nd
nd
216,000
136,000
326,000
299,000
278,000
415,000
487,000
nd
433,000
302,000
30,000
nd
314,000
149,000
nd
nd
nd
55,077
55,879
48,927
nd
nd
nd
7,219
19,116
4,813
42,511
nd
6,417
9,625
nd
nd
nd
28,875
18,181
43,580
39,971
37,163
55,478
65,103
nd
57,884
40,372
4,010
nd
41,976
19,918
nd
nd
nd
104.31
103.48
94.82
nd
nd
nd
9.40
26.55
6.00
63.07
nd
9.52
13.20
nd
nd
nd
61.70
34.43
82.54
114.86
51.05
82.56
132.32
nd
114.85
63.08
5.56
nd
57.90
27.44
nd
nd
nd
31.79
31.54
28.90
nd
nd
nd
2.86
8.09
1.83
19.22
nd
2.90
4.02
nd
nd
nd
18.81
10.50
25.16
35.01
15.56
25.16
40.33
nd
35.01
19.23
1.70
nd
17.65
8.36
Tsal
QTsp-Tsal(?)
Tsal
Lowest occurrence of probable Bandelier Tuff clasts in borehole (cross section only).
NE
Marine Oxygen
Isotope Stage
North American
Land Mammal "Age"
Rancholabrean
Brunhes
Pleistocene
Neogene (Tertiary & Quaternary)
middle
Irvingtonian
Matuyama
early
LA
VENTANA
SAN
MIGUEL
MOUNTAIN
GM–28
GM–34
HOLY
GHOST
SPRING
GILMAN
GM–33
GM–45
(SKY VILLAGE)
BENAVIDEZ
RANCH
LA MESITA
NEGRA
DALIES
NW
QTsp
2,000'
2,000'
RIO
PUERCO
SAN
YSIDRO
OF-DM–18
Blancan
Gilbert
Gauss
late
VALLE
SAN
ANTONIO
JEMEZ
SPRINGS
T. 10 N.
QHa
A'
BEAR
PONDEROSA SPRINGS
PEAK
JEMEZ
PUEBLO
OF-DM–25
1,000'
SANTA
ANA
PUEBLO
B
W
6000
feet ASL
LA JOYA
NW
SILVER
CREEK
Sandia
fault zone
West
Embudo
strand
East Heights fault zone
Coronado
strand
Eubank Blvd.
strand
Qp
SAN
LORENZO
SPRING
Alameda
strand
East
Embudo
strand
B'
CUNDIYO
SANTO
DOMINGO
PUEBLO SW
SANTO
DOMINGO
PUEBLO
OF-DM–15
SAN
FELIPE
PUEBLO
SAN
FELIPE
PUEBLO NE
OF-DM–19
OF-DM–37
BELEN
WATER
CANYON
Qp
E
TRUCHAS
PEAK
36°00'
PECOS
FALLS
GM–73
285
COWLES
ASPEN
BASIN
AGUA
FRIA
MONTOSO
PEAK
SANTA FE
OF-DM–32
McCLURE
RESERVOIR
Santa Fe
TETILLA
PEAK TURQUOISE SETON
HILL
VILLAGE
25
ELK
MOUNTAIN
OF-DM–47
OF-DM–23
PICTURE
ROCK
MADRID
HONEY
BOY
RANCH
GALISTEO
OF-DM–49
OF-DM–30
107°
109°
Taos
PECOS
LOWER
COLONIAS
OF-DM–11
BULL
CANYON
SANTA FE
Grants
35°30'
35°
Albuquerque
NORTH
ROWE SAN YSIDRO
Socorro
285
CAPTAIN
DAVIS
MOUNTAIN
OJO
WILDHORSE
RENCONA
HEDIONDA
MESA
OF-DM–48
OF-DM–39
SANDIA
CREST
SANDIA
PARK
SAN
PEDRO
KING
DRAW
OF-DM–6
OF-DM–1
HAGAN
V ILLANUEVA 1:100,000
ALAMEDA
OF-DM–10
TIJERAS
OF-DM–4
HUBBELL
SPRING
OF-DM–13
OF-DM–5
OF-DM–8
LOS
LUNAS
SE
BOSQUE
PEAK
CAPILLA
PEAK
TOME SE
MORIARTY
SOUTH
TAJIQUE
MILBOURN
RANCH
ESTANCIA
TORREON
EWING
MOUNTAINAIR
NE
INDEX TO PREVIOUS
GEOLOGIC MAPPING
Alameda 7.5’ Quadrangle
Rio
Rancho
MANZANO PUNTA DE
MOUNTAINAIR
PEAK
AGUA
BECKER
SCHOLLE
BECKER
SW
Location Map
35°00'
CHILILI
WILLARD
B ELEN 1:100,000
BLACK
BUTTE
Las
Cruces
OF-DM–20
MOUNT
ESCABOSA
WASHINGTON
TOME NE
35°15'
105° 30'
OF-DM–29
OF-DM–24
TOME
Deming
LAGUNA
ORTIZ
EDGEWOOD MORIARTY
OF-DM–35
NORTH
A LBUQUERQUE 1:100,000
ISLETA
LOS
LUNAS
40
SEDILLO
OF-DM–3
LEMITAR
MESA
DEL
YESO
SIERRA
DE LA
CRUZ
LOMA
DE LAS
CANAS
BUSTOS
WELL
103°
105°
37°
OF-DM–31
GLORIETA
S ANTA F E 1:100,000
OF-DM–41
OF-DM–40
ROSILLA
PEAK
34°30'
106°00'
Corrales
SANDOVAL CO.
BERNALILLO CO.
34°
22'
30"
CERRO RAYO HILLS
MONTOSO
Pueblo
of San
dia Re
servatio
n
Hacker (1977)
Lambert (1968) (entire quadrangle)
Hayes (1951); Kelley & Northrop
(1975)
Connell (1996)
QTsp
Van Hart (in press)
4,000'
Toa
Toa
Toa
?
QTsp
Tsal
?
?
COMMENTS TO MAP USERS
TKu
Tsal
200
Vertical Exaggeration = 2x
3,000'
100
225
0
Electrical
Conductivity
Gamma
Ray
(mmhos/m)
(GAPI)
Silt Clay
Cross Section
B-B'
Eubank Blvd.
strand
C'
Alameda
strand
N
6000
feet ASL
Qp-QTsp
Qp-QTsp
Qp-QTsp
QTsa
5,000'
5,000'
QTsa
QTsa
QTsa 2
QTsa 1
QTsa 2
QTsa
?
QTsa 1
?
Toa?
QTsa
QTsa
QTsa 1
Toa?
4,000'
Toa?
QTsa
Toa
3,000'
3,000'
Tsal
Albuquerque &
North Albuquerque Acres
QTsa
QTsa 1
QTsa
QTsa
QTsp
25
QTsp
QTsa
QTsa 2
QTsa 1
Coronado
strand
SOCORRO
E XPLANATION OF
G EOPHYSICAL L OGS
East Heights fault zone
projection of
Sunport geomorphic
surface
SIERRA
MOSCA
5,000'
QTsa 1
6000
feet ASL
JICARITA
PEAK
6,000
feet ASL
QTsp
QTsa 2
QTsa 2
S
SHADY
BROOK
107°00'
Qp
QTsa
Cross Section
A-A'
EL VALLE
T AOS 1:100,000
TESUQUE
HORCADO
RANCH
WHITE
ROCK
S OCORRO 1:100,000
SAN
ACACIA
TRUCHAS
OF-DM–36
OF-DM–17
TURN
ABEYTAS
TRES
RITOS
OF-DM–50
OF-DM–2
WIND
MESA
DALIES
PEÑASCO
GOLDEN
PLACITAS
OF-DM–16
LOS
GRIEGOS
OF-DM–33
OF-DM–34
QTsa
Qrp
QTsa 2
Tsal
Tsal
Tsal
2,000'
ESPAÑOLA
OF-DM–12
OF-DM–38
QTsa
.
CHIMAYO
TAOS SW
RANCHOS
DE TAOS
106°30'
Qpr
QTsa
PUEBLO
PEAK
84
BERNALILLO
LA MESITA
ALBUQUERQUE
NEGRA SE ALBUQUERQUE
EAST
WEST
LA JOYA
Cross sections are constructed based upon the interpretations of the
authors made from geologic mapping, and available geophysical
(regional gravity and aeromagnetic surveys), 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.
36°30'
OF-DM–43
33°
OF-DM–9
BELEN
SW
88000m N.
35°07'30"
106°30'
4,000'
COCHITI
DAM
L OS A LAMOS 1:100,000
CERRO BERNALILLO
CONEJO
NW
LADRON
C
CAÑADA
OF-DM–42
OF-DM–28
1,000'
WHEELER
PEAK
GM–71
OF-DM–7
LOMA
CRESTON
VEGUITA
COMANCHE
RANCH
38
SAN
JUAN
PUEBLO
PUYE
GUAJE
MOUNTAIN
Los
Alamos
FRIJOLES
BLAND
OF-DM–14
VOLCANO
RANCH
OF-DM–22
VELARDE TRAMPAS
68
OF-DM–27
Qpm
E.
VALLE
TOLEDO
REDONDO
PEAK
OF-DM–21
BELEN
NW
T. 11 N.
LOS
CORDOVAS
30 km
SEVEN
SPRINGS
ARROYO
LOMA
SAN
DE LAS
MACHETE
FELIPE
CALABACILLAS
MESA (SKY VILLAGE SE)
?
3,000'
Tsal
Water table; approximate elevation (cross sections only).
BT
20
OF-DM–45
(SKY VILLAGE NE)
SPW
479
590
nd
468
456
480
538
nd
964
801
870
936
939
852
939
964
350
nd
485
624
696
672
672
722
300
360
264
372
260
982
852
620
608
T
GM–27
(SKY VILLAGE NW)
Tramway Blvd.
1996
1998
nd
1997
1997
1996
1997
1995
1998
1998
1996
1997
1997
1997
1987
1987
1996
1988
1998
1996
1996
1994
1995
1998
1998
1997
1997
1997
1998
1996
1996
1998
1995
Specific
Capacity
m3/d/m)
GM–26
Tsal
Qpm
TRES
OREJAS
ARROYO
SECO
3
Taos
TAOS
JUNCTION
20 mi
10
RANCHO
DEL
CHAPARRAL
OJITO
SPRING
TKu
38
Alameda
10
SAN
PABLO
COLLIER
DRAW
?
NEP
388
330
385
421
393
455
541 u
160
762
736
667
767
746
672
726
736
340 u
603
482 u
595
629
551
622
489
263
340
230
327
228
853
694
537
490
Specific
Capacity
(gal/min/ft)
late
4,000'
Toa?
We1 (projected)
1,194*
1,390*
570
996*
996*
996*
1,525
1,400
1,704*
1,581*
1,602*
1,549*
1,626*
1,675*
1,626
1,708
1,308
820
1323
1,092
1,224
1,200
1,020
3,376
972*
852*
900*
876*
900*
1,715*
1,786*
1,484
1,450
Screen
Length
(ft)
early
QTsa
QTsp
ARROYO
HONDO
TAOS
A BIQUIU 1:100,000
QTsa
?
CERRO
DE LOS
TAOSES
CARSON
0
OF-DM–26
We2
5289
5242
5870
5285
5265
5235
5460
5100
5649
5600
5527
5629
5630
5558
5675
5650
5240
5978
5435
5445
5490
5415
5485
5353
5144
5208
5110
5200
5112
5698
5596
5436
5387
Screen
Base
(ft, bls)
Screened
Units
(ft, bls)
Screen
Top
(ft, bls)
Xqs
LYDEN
Toa
3,000'
by Sean D. Connell
Date
Meas.
(yr)
SWL
Paleoproterozoic
OF-DM–46
No2
1974
1991
nd
1959
1960
1960
1997
1995
1979
1973
1977
1979
1978
1979
1978
1960s
1996
1988
1998
1959
1958
1958
1958
1989
1960
1960
1960
1960
1960
1980
1980
1977
1977
Total
Depth
(ft, bls)
Yp
Ys
0
Toa
Cr2 (projected)
Coronado No. 1
Coronado No. 2
George Duda
Leyendecker No. 1
Leyendecker No. 3
Leyendecker No. 4
Noreste Park
PNM-Reeves
Ponderosa No. 1
Ponderosa No. 2
Ponderosa No. 3
Ponderosa No. 4
Ponderosa No. 5
Ponderosa No. 6
Ponderosa No. 7
Ponderosa No. 9
Sister Cities
Sandia Peak Utilities
Sandia Pueblo
Thomas No. 1
Thomas No. 2
Thomas No. 3
Thomas No. 4
Thomas No. 5
Vol Andia No. 1
Vol Andia No. 2
Vol Andia No. 3
Vol Andia No. 4
Vol Andia No. 5
Walker No. 1
Walker No. 2
Webster No. 1
Webster No. 2
Date Elevation
Drilled
(yr) (ft, amsl)
Mesoproterozoic
?
SC S (projected)
Cr1
Cr2
DD
Ly1
Ly3
Ly4
NEP
PNM-R2
Po1
Po2
Po3
Po4
Po5
Po6
Po7
Po9
SCS
SPU3
SPW
Th1
Th2
Th3
Th4
Th5
VA1
VA2
VA3
VA4
VA5
Wa1
Wa2
We1
We2
Well
Name
ˇc
NMBMMR STATEMAP
Quadrangles
6000
feet ASL
QTsa 1
TD
5024 ft
76
Approximate extent of buried fluvial terrace risers of the ancestral Rio Grande (post Santa Fe
Group)—Hachured towards fluvial terraces; Edith Formation (double hachured line).
Well
Symbol
Pliocene
E
QTsa
Toa
QHa
Ly3
•
• • • •
Triassic
I NDEX M AP OF NMBMMR’ S
STATEMAP
7.5-M INUTE G EOLOGIC Q UADRANGLES
9/ 99
A'
Qp
3,000'
Approximate location of buried contact separating the ancestral Rio Grande axial-fluvial deposits
(QTsa) and eastern basin-margin piedmont deposits (QTsp) of the upper Santa Fe Group.
.
Miocene
Sandia
fault zone
QTsa
QTsa
Geologic cross section.
Geologic contact—Interpreted location within units af and daf; modified from Lambert (1968) or
interpreted using vintage aerial photography.
Je (?)
Major unconformity
Major unconformity
Qpm
Tsal
?
Jurrasic
84
QTsa 2
QTsa 2
4,000'
5,000'
Construction and hydraulic data table for selected wells in the Alameda quadrangle and vicinity. Data interpreted and modified from Bexfield (1998),
Connell and Heynekamp (1998), Jackson et al. (1998), Johnson et al. (1996), John Shomaker and Associates (1990), Groundwater Management
Incorporated (1988 a,b,c,d), and public-domain well-log reports from the New Mexico Office of the State Engineer. Abbreviations include: multiple
screened intervals (M), transmissivity (T), hydraulic conductivity (K), depth below land surface (bls), elevation above mean sea level (amsl), upper piezometer
(u), and no data/not determined (nd). Asterisk (*) indicates depth of constructed well, exclusive of pilot-hole depth (i.e., minimum depth of well). Double
asterisk (**) indicates stratigraphic interpretation for entire borehole depth.
Cretaceous
5,000'
Toa
Geologic contact—Solid where exposed; dashed where approximately located; dotted where
concealed; queried where inferred.
TKu
Paleocene
QTsp
QTsa
Tsal
?
Eocene
66.4
?
EXPLANATION OF MAP SYMBOLS
A'
57.8
Oligocene
CHILI
QTsa
?
4,000'
A
CENOZOIC
Vertical Exaggeration = 2x
2,000'
P
•
QTsa
000m
Tsal
QTsp
QTsa 2
May 1997
2 February 2000 Revision
NATIONAL GEODETIC VERTICAL DATUM OF 1929
Q9
Eubank Blvd.
strand
Qpr
QTsa
?
Geology of Alameda quadrangle,
Bernalillo and Sandoval Counties,
New Mexico
1 MILE
Lambert (1968)
QHa, QHao
QTob, QTsp
36.6
QTsa
CENTRAL AVE. (US 66) 3.5 MI.
0
1000
3
61
GN
0° 54'
•
3
Connell (1996)
QTsa
MW3E
56
R. 3 E.
QTsp
e
•
•
•
•
•
35'
3
Toa
QTob
Gr
•
•
•
•
•
•
?
Qpm
QTsa
285
Qpr
5,000'
Qpm
Po1
QTsau
Rio
•
•
•
Th5
Major unconformity
a
•
•
•
•
•
•
l
?
Th2
U
not
shown
Base not exposed
Are
•
•
•
•
ll
ll
ll
ll
ll
ll
l
ll
•
ll
• • • •
• • • • • • • • • • • • • • • • • • • • • • • • • • • l l• • • l l
ll
ll
Ly1
?
Th1
Coronado
strand
91
Th5 (projected)
ES
D
D U
38
U
D
This Study
6000
feet ASL
Qpm
New Mexico Bureau of Mines and Mineral Resources, Socorro, NM 87801
Albuquerque Field Office, Albuquerque, NM 87106
ll
W
?
Po2
SCALE 1:24,000
S. D. Connell: mapping, Phanerozoic stratigraphy and regional structural interpretation
refined from borehole data analyses, unit descriptions and correlations, and structural
cross sections A-A' and B-B' (cross section B-B' modified from Hawley and Whitworth,
1996); geology depicted in areas of disturbance (af) taken from Lambert (1968, scale
of 1:48,000); Proterozoic geology taken from Hayes (1951) due to lack of accessibilty
D. J. McCraw and G. E. Jones: digital cartographic production
Th4
Qpm
VA2
CENTRAL AVE. (US 66) 3.3 MI.
Base from U.S. Geological Survey 1960, photorevised 1967 and 1972
Polyconic projection, 1927 North American datum
10,000-foot grid based on New Mexico coordinate system, cental zone1000-meter
Universal Transverse Mercator grid ticks, zone 13, shown in blue
ll
UE
54
Qay
Th3
Qpm
Tentative correlations of alluvial units in the study area, based upon stratigraphic relations,
landscape-topographic position, degree of soil development and physical correlation of units.
Schist, phyllite, quartzite and gneiss — Schist and phyllite with local quartzite and gneiss of the Juan Tabo
sequence of Hayes (1951).
W
QHa
S)
Q
3
Ly4
af
A
ER
IJ
UE
R
390 000 FEET
353
INTERSTATE 40 1.4 MI.
Ly3
QHa
Po3
21
Major unconformity
Paleoproterozoic metamorphic rocks
A
Qpm
(T
T)
35°07'30"
106°37'30"
VA4
VA1
ll
VA3
Qay
LB
UQ
ll
•
Qrm
QHa
(A
• •
• •
•
• •
• •
•
• •
• •
•
• •
• •
• • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • •
T. 11 N.
T. 10 N.
QHa
Qpo
5.3
ue
•
•
•
•
•
•
•
•
•
VA5
daf
af
?
Major unconformity
QTsa1
rq
•
•
•
•
•
•
•
ll
•
Mo5A
af
Qpm
Qpm
Qpm
Po4
?
13
ue
•
•
•
•
OF
EASTERN LIM
IT
ll
•
•
•
QHa
A
•
•
•
ll
•
•
•
•
Qay
89
•
•
•
ll
ll
ll
•
•
Qrm
VA6
Qpm
Qay
Qp
11
A l bu q
•
•
•
•
ll
•
•
ll
RIO G
RANDE TER
RACES
•
•
•
•
•
•
•
•
•
Qrpm
Qay
Qpm1
Qre
23.7
QHa
S
CIE
OFA
Qrm
Po6
Qpm
?
not shown
East Heights fault zone
D U
Qpm
Qpm2
?
7
9
Machette, M. N., 1978, Geologic map of the San Acacia Quadrangle, Socorro County, New Mexico: U.S.
Geological Survey, Geologic Quadrangle Map GQ-1415, scale 1:24,000.
Sandia granite — Mainly megacrystic biotite monzogranite to granodiorite with K-feldspar megacrysts, up
to several cm long. Intrudes the metamorphic rocks (Xqs) of Rincon Ridge. Approximately 1,400 Ma (Brookins,
1982).
Xqs
Qrm
QTsa2
Lucas, S. G., Williamson, T. E., and Sobus, J., 1993, Plio-Pleistocene stratigraphy, paleoecology, and mammalian
biochronology, Tijeras Arroyo, Albuquerque area, New Mexico: New Mexico Geology, v. 15, no. 1, p.
1-8.
Pegmatite dike — Dikes, pods and lenses composed of pegmatite, aplite and quartz formed during emplacement
of the Sandia granite at 1,400 Ma (Kelley and Northrop, 1975 and Brookins, 1982).
.
Ys
Qpr
5
19
Lucas, S. G., Williamson, T. E., and Sobus, J., 1988, Late Pleistocene (Rancholabrean) mammals from the Edith
formation, New Mexico: New Mexico Journal of Science, v. 28, n. 1, p. 51-58.
.
Van Hart, D., 1999, Geology of Mesozoic sedimentary rocks in the Juan Tabó area, northwest Sandia
Mountains, Bernalillo County, New Mexico: New Mexico Geology, v. 21, no. 4, p. 104-111.
daf
af
QHao
G EOLOGIC C ROSS S ECTIONS
QHa
L IT H
Qre
QHa
QHa
1.8 Ma
Lozinsky, R. P., 1994, Cenozoic stratigraphy, sandstone petrology, and depositional history of the Albuquerque
basin, central New Mexico, in: Keller, G. R., and Cather, S. M., eds., Basins of the Rio Grande rift:
Structure, Stratigraphy, and Tectonic setting: Geological Society of America, Special Paper 291, p.73-82.
Qpm
Po5
Qpm
Lambert, P. W., 1968, Quaternary stratigraphy of the Albuquerque area, New Mexico [Ph.D. dissertation]:
Albuquerque, University of New Mexico, 329p.
Lower Tertiary and Cretaceous sedimentary rocks, undivided (Paleogene-Cretaceous) — Cross section
only. Undivided lower Tertiary (probably Galisteo Formation and Lozinsky’s (1994) “Unit of Isleta No. 2”)
and Cretaceous deposits.
.
QHa
15
Paleog ene
•
•
•
•
•
•
•
•
•
•
90
?
92
XIAL
38
Qpm2 (?)
38
OF A
Qay
?
QHao
10'
QHa
Kelley, V. C., 1977, Geology of the Albuquerque basin, New Mexico: New Mexico Bureau of Mines and
Mineral Resources Memoir 33, 60p.
PROTEROZOIC ERATHEM
Mesoproterozoic igneous rocks
Younger subunit (upper to middle Pleistocene) — Moderately consolidated deposits of very palebrown to strong yellowish-brown (7.5-10YR), poorly to moderately stratified and sorted, silty clay and
loamy sand and gravel. Inset against older piedmont subunit (Qpm1), and conformably overlies the
Menaul Formation (Qrm). Deposit surface along the mountain front is slightly to moderately dissected and
exhibits subdued bar and swale topography on interfluves. Deposit surface (top) is deeply dissected along
the eastern escarpment of the inner valley of the Rio Grande. Soils are moderately developed and possess
Stage II carbonate morphology and few to common, thin to moderately thick clay films. Geomorphic
surface Q7 of Connell (1995, 1996).
Qpm2
Qpm
LIMIT
Qay
Qre
?
D U
Qpm
93
Qpm1
E RN
QHa
QHa
af
EAST
Qpm2 (?)
1 510 000
FEET
38
SCS
af
38
780
Kelley, V. C., and Northrop, S. A., 1975, Geology of the Sandia Mountains and vicinity: New Mexico Bureau
of Mines and Mineral Resources Memoir 29, 136p.
Chinle Group, undivided — Reddish-brown mudstone and yellowish-brown sandstone, probably correlative
to the Petrified Forest Formation (Van Hart, in press). Unit occurs as highly faulted inliers between the Jaral,
Rincon, and Sandia faults.
ˇc
ll
•
•
•
•
ll
•
•
•
•
QHa
Qrpm
daf
QHa
Johnson, P., Connell, S. D., and Allred, B., 1997, Field boring log for Sister Cities Park, City of Albuquerque
piezometer nest, FY 1996: New Mexico Bureau of Mines and Mineral Resources, Open-File Report 426A,
22 p.
Entrada Formation — An inlier of yellowish-brown, moderately sorted, fine-medium-grained sandstone. Poorly
exposed on the hangingwall of the Rincon fault (Section 28, T12N, R4E). Stratigraphic position is ambiguous,
but unit is tentatively correlated to the Entrada Formation based on sandy texture and color.
Je
Middle eastern-margin piedmont alluvium, undivided (upper to middle Pleistocene) — Poorly to
moderately consolidated deposits of very pale-brown to strong-brown and light-gray (7.5-10YR) sand and silty
to clayey sand, and gravel. Inset against older eastern-margin piedmont alluvium (Qpo), unconformably overlies
the Edith Formation (Qre), and is inset by younger stream alluvium (Qay). Gravel clasts are predominantly
subangular granite and schist with minor subrounded limestone derived from the western front of the Sandia
Mountains and Rincon Ridge. Slightly to moderately dissected deposit surface exhibits subdued constructional
bar-and-swale topography on interfluves. Weakly developed soils exhibit Stage II to III+ carbonate morphology
and minor to moderate clay film development. Locally divided into two subunits. Variable thickness, ranging
up to 140 ft (43 m).
B'
ll
•
•
•
ll
•
•
•
•
•
daf
Qay
SPU3
Qpm
Po9
Qpm
94
Qpm
ll
•
•
•
•
•
•
•
•
•
QHa
Qrps
38
John Shomaker and Associates, Inc., 1990, Well report, City of Albuquerque, Thomas No. 5: Albuquerque,
NM.
MESOZOIC ERATHEM
Jurassic and Triassic Systems
Younger stream alluvium (Holocene to uppermost Pleistocene) — Poorly consolidated deposits of palebrown to light-brown (7.5-10YR) sand to sandy clay loam and gravel. Inset against eastern-margin piedmont
alluvium (Qpm). Distal margin is truncated at the eastern escarpment of the inner valley of the Rio Grande.
Surface is slightly dissected and possesses weakly developed soils with Stage II carbonate morphology. Locally
includes undivided stream alluvium (QHa) in narrow arroyos. Underlies entrenched stream valleys on the
piedmont slope. These arroyo valley deposits grade west into older alluvial fans that mark the position of an
older valley border. These alluvial fans may locally contain hydrocollapsible soils. Locally subdivided into older
(Qay1, on adjacent Bernalillo Quadrangle, Connell, 1998) and younger (Qay2) deposits on the basis of inset
relationships. Deposits along the northwestern margin of map area consist of sandy alluvium with scattered
gravel lenses derived from the Arroyo de las Calabacillas drainage. This deposit contains clasts of red granite,
chert, and basalt derived from the western margin of the basin.Correlative to geomorphic surface Q8 of Connell
(1995, 1996). Variable thickness, ranging up to 20 ft (6 m).
ll
•
•
ll
•
•
•
•
•
4th ST. (US 85) 0.6 MI.
Qre
QHa
Qpm
ll
•
•
•
•
•
Qrps
Qpm
Qay2
ll
•
•
ll
•
•
•
•
D U
Qay
Qay
TKu
128
Jackson, P. B., Connell, S. D., Hawley, J. W., Chamberlin, R. M., and Allen, B. D., 1998, Field logs of boreholes
for nested piezometers, Noreste Park site, City of Albuquerque: New Mexico Bureau of Mines and Mineral
Resources, Open-File Report 444B, 28 p., 1 ap.
Paleogene and Cretaceous Systems
Qrpr
Qrpc
Qrpsm
Qrpr2
Qrpr1
Qrps
Qrpm
1
Major unconformity
ll
•
•
•
•
•
•
92
Qpm
Youngest stream alluvium (Historic to Holocene) — Unconsolidated deposits of brown, light gray-brown,
and yellowish-brown (10YR) sand, silty to clayey sand, and gravel. Underlies arroyos, inset against younger
stream alluvium (Qay), and probably interfingers with the Las Padillas Formation (Qrp). Very weakly developed
soils exhibit no pedogenic carbonate at the surface and weak Stage I carbonate morphology at depth. Forms
extensive valley border alluvial fans along the margins of the inner valley of the Rio Grande. These valley
border alluvial fans may locally contain hydrocollapsible soils. Correlative to geomorphic surfaces Q8-Q9
of Connell (1995, 1996). Variable thickness, ranging up to 50 ft (15 m).
QHa
SEDIMENTARY
Qay
Hayes, P. T., 1951, Geology of the Pre-Cambrian rocks of the northern end of the Sandia Mountains, Bernalillo
and Sandoval Counties, New Mexico [M.S. Thesis]: Albuquerque, University of New Mexico, 54 p.
U. S. Geological Survey and Sial Geosciences, Inc., 1998, Description of digital aeromagnetic data collected
north and west of Albuquerque, New Mexico: U. S. Geological Survey Open-File Report 97-286.
ll
•
•
ll
•
•
•
NM 194 0.6 MI.
(LOS GRIEGOS)
ALBUQUERQUE 6.8 MI.
Qay
38
Qpm
Fluvial deposits, piedmont alluvium, and stream alluvium, undivided (Historic to middle
Pleistocene) — Cross section only. Undivided Las Padillas, Menaul, and Edith formations (Qrp, Qrm, and Qre,
respectively), stream-valley (QHa and Qay), and eastern-margin piedmont alluvium (Qpm).
.
Qpr
DD1
d
Qre
Qpm
Dr. Paul W . Bauer
Geologic Mapping
Program Director
3
Hacker, L. W., 1977, Soil survey of Bernalillo County and parts of Sandoval and Valencia County, New Mexico:
U.S. Department of Agriculture, Soil Conservation Service.
I
EMA
Qrp
Groundwater Management, Inc., 1988d, Pumping test data analysis, Vol Andia well field, City of Albuquerque,
New Mexico: Kansas City, KS, 66106, 80p.
Lower fluvial deposits (Pliocene to upper Miocene) — Cross section only. Fine-to coarse-grained sandstone
with interbedded compact clay and rare scattered pebbly sandstone interbeds. Regional borehole geophysical
log correlations (Connell et al., 1998a,b) suggests that unit pinches out to the east into eastern basin-margin
piedmont deposits of the upper Santa Fe Group (QTsp). May be correlative to piedmont-slope and alluvial
fan deposits of the Sierra Ladrones Formation (Machette, 1978) exposed at the southern margin of the
Albuquerque Basin. May include undivided western basin-margin deposits of the Arroyo Ojito Formation. Base
not exposed, but regional thickness is estimated to be greater than 2,000 ft (610 m) thick in drillholes.
Tsal
Piedmont and stream alluvium, undivided (Historic to middle Pleistocene) — Cross section only. Undivided
deposits of stream-valley alluvium (QHa and Qay) and eastern-margin piedmont alluvium (Qpm).
.
Qp
Qay
stran
Qrps
af
udo
Qre
Qay
nd
stra
ado
oron
e-C
zon
ault
ts f
eigh
t H
Eas
Qre
Qay
No2
Qpm
Divided into stream-valley alluvium and eastern-margin piedmont alluvium. Stream-alluvium typically contain
poorly to well sorted, poorly to well stratified, clast- and matrix-supported deposits associated with modern
and late Pleistocene entrenched arroyos across the map area. Eastern-margin piedmont alluvium contains
generally poorly sorted, poorly stratified, clast- and matrix-supported deposits having angular to subangular
clasts of granitic, metamorphic, sandstone, and minor limestone derived from the western and northern slopes
of the Sandia Mountains and eastern basin margin.
.
96
AT
Qay2
Groundwater Management, Inc., 1988c, Pumping test data analysis, Thomas well field, City of Albuquerque,
New Mexico: Kansas City, KS, 66106, 67p.
Arroyo Ojito Formation, Atrisco Member (Pliocene) — Cross section only. Moderately to well consolidated,
locally cemented succession of yellowish-brown to yellowish-red (2.5-10YR), fine-grained silty sandstone and
mudstone (Allen et al., 1998). Named for deposits beneath the Town of Atrisco Grant (Connell et al., 1998a),
where it is recognized in the subsurface by a laterally extensive interval of high electrical conductivity (low
electrical resistivity) on borehole geophysical logs (Connell et al., 1998a, b). Borehole geophysical logs indicate
that the upper contact is conformable and gradational with the overlying fluvial deposits (QTsa), and marks
the base of an upward-coarsening megasequence that culminates in dominantly gravelly sand of the axialfluvial deposits of the upper Santa Fe Group (QTsa and QTsau). Fine-grained and difficult to determine
provenance; however, the lateral continuity of unit, as interpreted from geophysical correlations (Connell et
al., 1998a, b), suggest that this unit may be correlative to the Arroyo Ojito Formation, exposed west of the
map area. Thus, this member is provisionally assigned to the Arroyo Ojito Formation. Subsurface data indicates
that unit is approximately 280-330 ft (85-100 m) thick (Connell et al., 1998a).
Toa
Stream-valley and eastern-margin piedmont alluvium
38
Emb
Qay
ˇc 34
Qpo
East
Qre
10'
Wa1
Jaral
fault
ˇc
Qay
ult -
Cr2
Ys
Xqs •
•
•Qpo
Ys
ˇc
ia fa
QHa
Qpm
41
60
Sand
Qay
We2
52
U
D
rand
Qay
Qpm
do st
Qre
QHa
QHa
af
mbu
PNM-R
est E
lt - W
daf
Wa2
ia fau
Cr1
Sand
Qrpsm
We1
76
Qpm
• • • • • • • •
• • • • • •
• • • •
• • • • •
• • • • •
• • • •
• • • •
• • •
• • •
• • •
• • •
• • •
• •
• •
• •
• •
• •
• •
• •
• •
• •
• •
• •
• •
• •
• •
• •
daf
Qpm
•
QHa
•
Qre
•
?
•
?
?
•
Qay
d
an
str
La3
La6
Qay
•
La4
Qpm
•
La5
?
•
La2
D U
•
daf
Qay
?
•
QHa
nd•
str•a •
ed•a •
•
lam
•
e -A•
on• •
lt z •
fau • •
ts •
igh• •
He •
st •
Ea• • •
•
•
•
La8
NEP
d.
Blv
nk
ba
-Eu
ne
zo
lt
fau
Qre
La1
Qay
71
ll
•
•
•
•
•
•
•
•
Qpm
50
D U
?
Qpm
Qpm
12'30"
lt - and
fau str
ia d.
nd Blv
Saway
am
Tr
•
Qay
QTsau
daf
Qay
U
ts
igh
He
st
Ea
Qre
Qre
•
Qpm
Qay
Qrpm
Qrps
•
•
Qay
daf
QHa
93
•
•
Qrpm
Qre
af
af
•
Qrm
QHa
38
•
Qpm
D
Qay
Qrpm
•
•
QTsau
MW3E
•
•
Qre
Qrpm
Qrpm
Qrpsm
?
l l•
•
•
•
daf
Qrm
B
•
•
•
Qrm
Qrps
Qrps
•
•
daf
Qrpm
•
Qay
66
ll
ll
daf
•
Qpm
•
Qrpc
?
•
QHa
•
•
Qre
af
Qay
af
•
QTsp(?)
10
Groundwater Management, Inc., 1988b, Pumping test data analysis, Ponderosa well field, City of Albuquerque,
New Mexico: Kansas City, KS, 66106, 92p.
Arroyo Ojito Formation, Loma Barbon Member (lower Pleistocene to upper Miocene) — Well
consolidated, weakly to moderately cemented, yellowish-brown to yellowish-red and reddish-brown (5-10YR),
fine-grained silty sandstone with interbedded mudstone and scattered, lensoidal, weakly to well cemented,
conglomeratic sandstone interbeds. Deposits are tentatively correlated to the Loma Barbon Member on the
basis of reddish-brown color and correlation to Lambert’s (1968) middle red formation. Shown as queried
deposit (Sections 25 and 36, T12N, R3E) because of restricted access to existing exposures. The Loma Barbon
Member interfingers with fluvial deposits of the ancestral Rio Grande (QTsa) on adjacent quadrangles (Connell,
1998; Connell et al., 1998b). Estimated thickness is over 1,400 ft (>425 m).
.
QTob
Edith Formation (middle Pleistocene) — Poorly to moderately consolidated, locally cemented deposits of
pale-brown to yellowish-brown (10YR) gravel, sand and sandy clay derived from the ancestral Rio Grande.
Named by Lambert (1968) for exposures along Edith Boulevard and the eastern escarpment of the inner valley
of the Rio Grande. Gravel clasts contain abundant rounded quartzite and volcanic rocks with minor granite,
metamorphic sandstone, and very rare (commonly welded) Bandelier Tuff. Comprises an upward-fining sequence
containing a basal, quartzite-rich cobble gravel that grades upsection into silty sand. Unconformably overlies
upper Santa Fe Group deposits, and is unconformably overlain by eastern-margin piedmont alluvium (Qpm)
and younger stream alluvium (Qay). Unit Qay buries the Edith Formation south of the Jaral Canyon arroyo.
To the north, unit Qay is inset against the Edith Formation. Basal contact is approximately 40-80 ft (12-24 m)
above the top of the Las Padillas Formation (Qrp, Rio Grande floodplain), and maybe warped down to the
southwest by up to 45 ft (14 m) across the Alameda strand of the East Heights fault zone. Gravel pits (within
daf) yielded late to middle Pleistocene Rancholabrean fossils (Lambert, 1968; Lucas et al., 1988). Moderately
developed soils on overlying eastern-margin piedmont alluvium (Qpm) suggest a middle Pleistocene age for
unit. Variable thickness, ranging from 10-40 ft (3 to 12 m).
Qre
72
ll
•
•
•
•
D
•
AM
•
•
•
QHa
•
Qay
QTsp(?)
ll
•
•
•
Qpo
70
?
ll
•
af
QHa
ll
ll
af
•
QHa
af
70
ll
•
•
•
•
•
QHa
•
•
•
Qay
af
14
Holocene
Groundwater Management, Inc., 1988a, Pumping test data analysis, Leyendecker well field, City of Albuquerque,
New Mexico: Kansas City, KS, 66106, 64p.
Piedmont deposits (lower Pleistocene to Miocene) — Subhorizontally stratified to slightly east-tilted, reddishbrown to yellowish-brown and very pale-brown (7.5-10YR) conglomerate, gravelly sandstone, and sandstone
with subordinate siltstone and rare mudstone. Conglomerate clasts are predominantly composed of subangular
to subrounded granite with subordinate metamorphic rocks, and minor subrounded limestone. May be correlative
with piedmont-slope and alluvial fan deposits of the Sierra Ladrones Formation (Machette, 1978) exposed at
the southern margin of the Albuquerque Basin. Interfingers with axial-fluvial deposits (QTsa) to the west.
Moderate to low estimated hydraulic conductivity. Thickness is variable and estimated to range from 2,0007,000 ft (610-2,135 m).
QTsp
Menaul Formation (upper to upper-middle Pleistocene) — Poorly consolidated deposits of yellowishbrown (10YR) pebble gravel and pebbly sand derived from the ancestral Rio Grande. Named by Lambert
(1968) for exposures along Menaul Blvd. Gravel clasts are dominated by rounded quartzite pebbles that are
generally smaller in size than pebbles and cobbles in the Edith Formation (Qre). Discontinuously (probably
lensoidal) exposed along the eastern escarpment of the inner valley of the Rio Grande. The basal contact is
approximately 85-118 ft (26-36 m) above the top of the Las Padillas Formation (Qrp, Rio Grande floodplain),
and is unconformably overlain by younger stream alluvium (Qay). Thickness is generally less than 10 ft (3 m).
Qrm
ll
•
•
Qpm
Qpm
Qpm
28
70
ll
•
Qpm
•
QHa
ll
•
•
T. 11 N.
18
17
ll
ll
•
Qpo
T. 12 N.
Xqs
ll
•
Qrpm
23
Qpm2
T
y
tur
Polarity
Chron
0 ka
Connell, S. D., Allen, B. D., Hawley, J. W., and Shroba, R. S., 1998b, Geology of the Albuquerque West 7.5minute quadrangle, Bernalillo County, New Mexico: New Mexico Bureau of Mines and Mineral Resources,
Open-File Report DM-17, scale: 1:24,000.
Lower sandy mudstone marker bed (Pliocene) — Cross section only. Muddy sandstone and sandy
mudstone recognized by laterally correlative zones of relatively low resistivity (high electrical conductivity)
on borehole geophysical logs. Approximately 100-150 ft (32-45 m) thick.
QTsa1
Silty to clayey stream and floodplain deposits (Historic) — Unconsoldiated fine-to medium-grained
sand, silt and slay. Interpreted to represent fine-grained floodplain deposits. Includes Anapra, Armijo,
Agua, and Gila series of Hacker (1977).
n
n ce fo r t h e 21st Ce
MESOZOIC
QHa
•
18
ll
•
Silty to sandy stream and floodplain deposits (Historic) — Unconsolidated fine-grained sand, silt and
clay. Interpreted to represent fine-grained sloughs or oxbows. Includes Glendale and Gila series of Hacker
(1977).
Qrpsm
Sc ie
ME X
C ORRELATION OF U NITS
Connell, S. D., Allen, B. D., and Hawley, J. W., 1998a, Subsurface stratigraphy of the Santa Fe Group using
borehole geophysics, Albuquerque area, central New Mexico: New Mexico Geology, v. 20, n. 1, p. 27.
Upper sandy mudstone marker bed (Pliocene) — Cross section only. Muddy sandstone and sandy
mudstone recognized by laterally correlative zones of relatively low resistivity (high electrical conductivity)
on borehole geophysical logs. Approximately 150-200 ft (45-60 m) thick and about 100 ft (30 m) above
the lower marker bed (QTsa1).
.
QTsa2
ll
•
•
• • • • • • •
•
•
•
•
•
•
•
•
QHa
Qrpc
96
•
af
•
•
•
•
•
•
•
Qrps
Qrpc
•
89
60
Qpm1
af
• • • • • • •
•
af
Sandy stream and floodplain deposits (Historic) — Unconsolidated medium-grained sand and loamy
sand. Interpreted to represent channel and floodplain deposits. Includes Vinton series of Hacker (1977).
ll
Qpm
•
Qrps
QHa
• • • • •
• • •
• • •
•
•
Qpm1
•
Qpm2
va fau
lt
Qay
af
af
• • • • • • • •
•
af
Qay
•
•
•
•
•
•
•
Qrps
U
38
Qpm1
AM
•
QHa
af
Qre
38
af
ll
•
•
QTsa?
Xqs
af
af
af
• Qpm
Qay
•
•
Qrps
Qrpr2
97
•
Qay
Qre
Qay
• • • • • • • • •
U
•
•
•
•
•
Qrpr1
12'30"
Qay
Gravelly to sandy stream and floodplain deposits (Historic) — Unconsolidated coarse-grained sand
and pebbly sand. Interpreted to represent channel deposits. Includes Brazito series of Hacker (1977).
99
QTsau
25
La C u e
ll
•
Qrpc
38
25
Qpm2
•
AM
•
• • • • • • • • • • • • • • • • • • • • •
•
Qay
Qpm1
AM
•
QHa
•
ll
QTsa?
ll
•
Qpm2
Qpm2
•
• •
• •
• •
• •
• • •
• • •
• • • • • • • • • • •
af
ll
QTsa?
•
Qre
af
af
,
•
D
Qrps
ll
Qpm
ll
•
QHa
Qrpr
ll
Qpm
•
•
•
•
NM 194 2.5 MI.
•
Qrpr1
Qrpr2
Qrpr1
•
•
Qrpc
Qrps
•
QHa
daf
Qre
• QHa
•
•
af Qre
• Qrm
•
•
QHa
•
•
•
•
•
•
Qrpr1
Qrpm
Qay
•
ll
•
af
af
•
•
QHa
AM
Qrpsm
Qrpm
•
•
•
•
•
•
•
?
Qrps
Qay
Qrpc
•
af
QHa
•
•
Qpm1
87
•
•
Qrpsm
Qrpm
QHa
af
•
Qrpr1
Modern channel deposits (Historic) — Unconsolidated sand and gravel within the active channel of
the Rio Grande. Delineated using aerial photography and divided into older (Qrpr1) and younger (Qrpr2)
subunits based upon inset relationships.
Qrpr2
•
•
af
33
•
Qpm1
•
Qrpsm
•
•
T.11 N.
Qpm2
•
•
Qrpr
Qrpr2
af
QHa
47
Qpm2
•
•
•
99
T.12 N.
af
Qpm
38
?
QHa
rth
PROTEROZOIC
af
40
•
•
Qrps
Qrpm
Qre
Qay
•
•
•
•
1 540 000
FEET
Qpo
Qpm1
•
Qpo
Je?
QTob?
?•
Qpo
SPU3
Qay
ll
QHa
SPW
Po1
Qpm1
W
Tec h
Connell, S. D., and Heynekamp, M., 1998, Field boring log for Sandia Pueblo Well, City of Albuquerque
piezometer nest, FY 1998: New Mexico Bureau of Mines and Mineral Resources, Open-File Report 444A,
7 p, 2 ap.
Wa1
Qay
af
Qpm1
Mo5a
daf
Qrm
Qre
00
•
Qrpm
Qpm2
•
00
AM
39
AM
ll
Qre
Qrpr1
Qrpm
QTsa
Me x i c o
Connell, S. D., 1996, Quaternary geology and geomorphology of the Sandia Mountains piedmont, Bernalillo
and Sandoval Counties, central New Mexico: New Mexico Bureau of Mines and Mineral Resources OpenFile Report 425, 414 p., 3 pl. (open-file release of Connell, 1995).
Axial-fluvial deposits of the ancestral Rio Grande, undivided (lower Pleistocene to Pliocene) —
Consolidated and locally cemented, very pale-brown to yellowish-brown (10YR) sandstone and conglomerate
deposited by the ancestral Rio Grande. Gravel clasts are predominantly rounded quartzite and volcanic rocks
with minor granite and basalt. Dominantly sandstone with interbedded pebbly to cobbly conglomerate, but
generally coarsens upsection with cobble conglomerate beds common near the top. Interfingers with upper
Santa Fe Group eastern basin-margin piedmont deposits (QTsp) to the east. May be correlative with axialstream deposits of the Sierra Ladrones Formation (Machette, 1978) described along the southern margin of
the Albuquerque Basin. High hydraulic conductivity where saturated. Subdivided into an upper, pumiceous
unit (QTsau) on map. Subdivided into upper (QTsa2) and lower (QTsa1) silty sandstone marker beds on cross
sections. Base not exposed but interpreted to be at least 2,000 ft (610 m) thick in drillholes.
.
.
Upper pumice-bearing axial-fluvial deposits (lower Pleistocene) — Very pale-brown to yellowishbrown (10YR), pumiceous sand and pebbly to cobbly sand deposits by the ancestral Rio Grande. Gravel
clasts are predominantly rounded pumice, quartzite and volcanic rocks, with minor chert, granite, and
metamorphic rocks. Pumice clasts are derived from the ca. 1.61 Ma lower Bandelier Tuff (Lambert, 1968;
W.C. McIntosh, 1997, personal communication). Medium-to coarse-grained, euhedral, bipyramidal quartz
grains are locally abundant. Bedding is subhorizontal, and commonly cross stratified. Minor silty sand
beds are discontinuous and range in color from light brown to grayish green. Approximately 210 ft (65
m) thick at Tijeras Arroyo (Lucas et al., 1993).
Las Padillas Formation (Historic to uppermost Pleistocene) — Unconsolidated to poorly consolidated,
pale-brown (10YR), fine- to coarse-grained sand and rounded gravel with subordinate lensoidal interbeds of
fine-grained sand, silt, and clay derived from the Rio Grande. Recognized in drillholes and named for deposits
underlying the broad inner valley floodplain near the community of Las Padillas in southwest Albuquerque
(Connell et al., 1998b). Unconformably overlies upper Santa Fe Group deposits and is commonly gravelly
at the base. Probably interfingers with stream alluvium (QHa and Qay). Deposit surface (top) comprises the
modern surface of aggradation for the Rio Grande. Surficial deposits (< 6 ft [2 m] thick) are divided into a
modern river channel, and four textural subunits based on interpretations of soil series described and mapped
by Hacker (1977). Approximately 50-80 ft (15-24 m) thick.
Qrp
39
•
QHa
40
Qpo76
Qpm1
Upper Santa Fe Group
lR
e
Dr. Peter A. Scholle
Director and State Geologist
Connell, S. D., 1995, Quaternary geology and geomorphology of the Sandia Mountains piedmont, Bernalillo
and Sandoval Counties, central New Mexico: [M.S. Thesis] Riverside, University of California, 390 p., 3
pl.
Po2
af
20
40
Ea
Brookins, D. G., 1982, Radiometric ages of Precambrian rocks from central New Mexico, in: Wells, S. G., and
Grambling, J. A., eds., Albuquerque country II: New Mexico Geological Society Guidebook 33, p. 187189.
Wa2
af
af
(SANDIA CREST)
ll
Qay
•
Qrpr
Fluvial deposits derived from the ancestral and modern Rio Grande that unconformably overlie fluvial deposits
and eastern basin-margin deposits of the upper Santa Fe Group (QTsa and QTsp). Subdivided into three
formations on the basis of inset relationships.
Qpm2 23
i n e s & Mi n e r a
Ne w
Bexfield, L. M., 1998, Proposed expansion of the City of Albuquerque/U.S. Geological Survey Ground-waterlevel monitoring network for the Middle Rio Grande Basin, New Mexico: U.S. Geological Survey, OpenFile Report 97-787, 21 p. 2 pl.
Older eastern-margin piedmont alluvium (middle to lower Pleistocene) — Consolidated deposits of
yellowish-brown (10YR), poorly sorted and stratified, gravel and sand with minor, thin silty-clay interbeds.
Gravel clasts are predominantly subangular granite and schist with minor subrounded limestone. Granite clasts
are commonly pitted, and schist clasts are typically weathered and split. Variable thickness, ranging to at least
60 ft (18 m).
Qpo
Alluvium of the Rio Grande
Qpm2
QHa
Qpm1
af
45
• • •
•
ll
Qpm2
Qrpr1
Xqs
QHa
Qrm
QHa
Disturbed land and artificial fill, undivided (Historic) — Dumped fill and areas affected by open-pit
aggregate mining or construction. Locally mapped where disturbance is areally extensive or geologic contacts
are obscured.
.
daf
Allen, B. D., Connell, S. D., Hawley, J. W., and Stone, B. D., 1998, Core drilling provides information about
Santa Fe Group aquifer beneath Albuquerque’s west side: New Mexico Geology, v. 20, n. 1., p. 8-13.
Th2
Qpm1
Qrps
t
Qpm2
16
28
Th3
ll
Qre
AM
Qrpm
af
We1
01000m N.
64
Th5
Qpm1
Qrpr2
39
Qpm1
01
We2
af
39
Ly4
Qrm
fa
ll
QHa
Artificial fill (Historic) — Dumped fill and areas affected by human disturbances, including levees bordering
the Rio Grande. Locally mapped where areally extensive or geologic contacts are obscured.
.
af
ul
ll
af
Qay
45
Rincon
Qrpsm
Qrpc
Thin surficial deposits derived from wind and mass-movement processes, or extensive areas disturbed by openpit aggregate mining or construction.
28
Qpm2
Older subunit (middle Pleistocene) — Moderately consolidated deposits of light- to strong-brown (7.5YR)
and very pale-brown to light-gray (7.5-10YR), poorly to moderately stratified and sorted, sand clayey sand
and gravel. Unconformably overlies the Edith Formation (Qre). Subdued bar-and-swale constructional
topography is locally preserved on broad weakly dissected interfluves. Dissected deposit surface (top)
commonly exhibits erosional ridge-and-ravine topography. Moderately well developed soils with Stage
III+ carbonate morphology and many moderately thick clay films. Geomorphic surface Q6 of Connell
(1995, 1996).
Qpm1
M
of
au
S
Qpm1
QHa
Qay2
Qpm1
•
Qrpm
Qpm2
Qpm2
Ly1
Qay
af
af
QHa
37
Qpo
R EFERENCES
CENOZOIC ERATHEM
Neogene (Quaternary and Tertiary) System
Colluvial, landslide, eolian, and anthropogenic deposits
Cr1
ll
QHa
Qpm2
63
CO
Qay
QTsp
106°30'
35°15'
3
E.
Qpo
QHa
Ly3
af
Qpm2
420 000 FEET 385000m
61
Interstate 25
3
VA4
C'
60
QTsa
Qay
Qre
3
32'30"
•
59
ces
ur
so
Qrpr
3
AM
• • • • • • • • • • • • • • • • •
EASTERN
• • • • • • • • •
•
•
•
•
•
•
L
•
IMIT O
• • • •
• • • •
AM
• • • F•AXIAL LITHOFACIES
• • • •
•
• • • • •
•
• •
• • • • •
•
•
• • • • • •
•
•
• • • • • • • •
•
•
•
l
l
l
l
•
• •
l
• •
•
ll
•
•
•
ll
• •
•
l
•
• •
ll
• •
•
l
l
• •
AM
• •
•
•
•
ll
• •
ll
•
ll
• •
ll
ll
•
• • • •
• •
ll
•
• • • •
• • • • •
• • • • •
• • • • •
• • • • • • • • •
ll
• • •
•
•
(BERNALILLO)
•
55
•
•
•
••
• •
•
35'
3
•
54
• • •
NM 44 6.6 MI.
3
NM B
ur
e
E)
53000m E.
VA1
T
HE
AC
3
PNM-R2
M
106°37'30"
35°15'
SANTA FE 47 MI.
R. 3 E. R. 4 E.
VA3
A
(P
LA
CI
TA
S)
M
NEW MEXICO
BERNALILLO 3.8 MI.
Cr2
O
UNIT DESCRIPTIONS
ALAMEDA QUADRANGLE
and
A DIVISION OF
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 are based on 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). Lambert (1968) produced a geologic map (scale
1:48,000) of the region prior to significant ground disturbance. Portions
of Lambert’s map are incorporated where surface disturbance is
significant. The geology of areas of extensive ground disturbance have
been evaluated using aerial photography (1935, 1951, 1973, and
1996 vintages). Any enlargement of this map 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. Topographic and cultural
changes associated with recent development may not be shown.
Subdivision of the Las Padillas Formation was made using geologic
interpretations of (shallow) soil survey data published by the Soil
Conservation Service (Hacker, 1977).
The map has not been reviewed according to New Mexico Bureau of
Mines and Mineral Resources standards. Revision of the map is likely
because of the on-going nature of work in the region. The contents of
the report and map should not be considered final and complete until
reviewed and published by the New Mexico Bureau of Mines 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 and the U.S. Government.