Compiled by David W. Moore, Arthur W. Straub, Margaret E ... · dbd Mixed-lithology-clast deposits asa Alluvial sand, silt, clay, and gravel (post-Piney Creek alluvium, Piney Creek
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GENERALIZED SURFICIAL GEOLOGIC MAP OF THE PUEBLO 1˚ x 2˚ QUADRANGLE, COLORADOCompiled by
David W. Moore, Arthur W. Straub, Margaret E. Berry, Michael L. Baker, and Theodore R. Brandt2002
MISCELLANEOUS FIELD STUDIES MAP MF-2388Version 1.0
Pamphlet accompanies map
Base from U.S. Geological Survey, 1989
Transverse Mercator Projection
100 000-foot grid ticks based on Colorado coordinate system, central and south zones
Gray numbered lines indicate the 100,000-meter UniversalTransverse Mercator grid, zone 13
Compiled during 1997-1999D.W. Moore, CoordinatorDigital Cartography by T.R. Brandt and M.L. BakerManuscript approved for publication April 30, 2002
U.S. DEPARTMENT OF THE INTERIORU.S. GEOLOGICAL SURVEY
f s
pga
afk
afa
es ed
elb
cac cbv
ccd ccm clo csk cgg cgh cgc cbh cbm cbs cbu cbw
cra
xch
xci xlh xlj xlu
xsg
R
Holocene
latePleistocene
middlePleistocene
earlyPleistocene
MAN-MADEDEPOSITS ALLUVIAL DEPOSITS
EOLIAN DEPOSITS COLLUVIAL DEPOSITS
DISINTEGRATIONRESIDUUM
BEDROCK
jbg
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dbddbcdba
CORRELATION OF MAP UNITS
tbg tbj
tbk
tbi
wla
esaoc
LAKEDEPOSIT
clx csmjea jba jbc
LANDSLIDEDEPOSITS
COLLUVIUM,ALLUVIUM,
ANDROCK OUTCROP
cck cby
ags
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agm
asa
afb
QUATERNARY
PRE-QUATERNARY
GLACIAL ANDPERIGLACIAL
DISINTEGRATEDDEPOSITS AND
ROCK OUTCROP
gge
ggq
f Artificial landfill
Slags
afa Alluvial-fan deposit
cac Arkosic loamy colluvium and sheetwash alluvium
cbv Metamorphic and metavolcanic blocky colluvium
xch Clayey, calcareous disintegration residuum
HOLOCENE
HOLOCENE AND LATE PLEISTOCENE
dba
Disintegrated deposits, periglacial deposits, bouldery till, and rock outcrop
Crystalline-clast deposits
Sedimentary-clast depositsdbc
dbd Mixed-lithology-clast deposits
asa Alluvial sand, silt, clay, and gravel (post-Piney Creek alluvium, Piney Creek Alluvium, and pre-Piney Creek alluvium of Hunt, 1954,and Scott, 1960; Broadway Alluvium)
es Eolian sand
ed Stabilized dune sand
jea Slump-block landslide deposits, earthflow and mudflow deposits
ccd Calcareous clayey colluvium
cck Tuff-clast loam and clay loam colluvium
csm Tuffaceous colluvium
csk Grus, crystalline-clast colluvium, alluvium, and rock outcrop
cgg Sandstone-clast sandy loam to clay loam colluvium
cgh Arkosic-clast loamy colluvium
cgc Gneiss- and granite-clast gravelly colluvium
cbh Blocky sedimentary-rock colluvium
cbm Carbonate-clast loamy colluvium
cbs Rhyolite- and andesite-clast colluvium
cbu Mixed-lithology blocky colluvium
cbw Blocky basalt- and andesite-clast colluvium
Sandy clay disintegration residuumxci
Limestone-chip loamy disintegration residuumxlh
xlu Feldspathic loamy disintegration residuum
HOLOCENE TO MIDDLE PLEISTOCENE
Bouldery volcanic-rock landslide depositjba
Bouldery crystalline-rock landslide depositjbc
Feldspathic quartz-sand disintegration residuumxsg
elb
LATE PLEISTOCENE
Loess (Peoria Formation)
LATE AND MIDDLE PLEISTOCENE
tbg Crystalline-clast bouldery till
tbi Sedimentary-clast bouldery till
tbj Mixed-lithology-clast bouldery till
ggq Outwash sand and gravel (of Bull Lake, Pinedale,and post-Pinedale ages)
agsAlluvial sand, silt, clay, and gravel (Louviers and Slocum
Alluviums, undivided; late middle Pleistocene)
afb Alluvial-fan gravelly loam
tbk
MIDDLE AND EARLY PLEISTOCENE
Bouldery till (of pre-Bull Lake glaciations)
gge Outwash sand and gravel (of pre-Bull Lake glaciations)
agm Alluvial gravel and sand (Verdos and Rocky Flats Alluviums, undivided;early middle Pleistocene and early Pleistocene)
afk Alluvial-fan gravelly loam
Loamy or clayey sheetwash alluviumwla
Playa clay
Eolian sheet sand and loess (included in the "cover sand" of Frye and Leonard, 1957, and Blackwater Draw Formation of Reeves, 1976, described byHoliday, 1989)
oc
esa
Andesitic clayey colluvium
Clay loam colluviumclx
ccm
[For map uni t descr ipt ions and references see "Descr ipt ion of Map Units" in accompanying pamphlet]
LIST OF MAP UNITS
Bouldery till (of Pinedale and Bull Lake glaciations)
Blocky feldspathic-sandstone colluvium
Silty loam disintegration residuum
Shale-, chalk-, and chalky-limestone-clast loamy colluvium
cby
xlj
clo
Any use of trade names in this publ icat ion is fordescr ipt ive purposes only and does not imply endorsement by the U.S. Government
For sa le by U.S. Geological Survey InformationServices, Box 25286, Federal Center, Denver, CO 80225
This map was produced on request, d irect ly fromdigi ta l f i les, on an electronic plotter. I t is a lso avai lable as a PDF f i le at http://geology.cr.usgs.gov
QUATERNARY
cra Hogback and rangefront colluvium, alluvium, and rock outcrop
pga Pediment gravel
PLEISTOCENE
jbg Granodiorite-block debris-avalanche deposit
PRE-QUATERNARY
R Bedrock
Open Water
Fault, Quaternary age—Bar and ball on downthrown side
w
High-angle reverse fault—Inferred, R on upthrown blockR
Contact
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asa
cbh
cgc
ags
cck
cbh agm
ags
cck
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cbh
cck
cbu
cbm
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cbh
csm
cbv
agmtbg
tbj
csm
ggq
cbh
afkafk
cbh
dbd
tbj
afb
csk
csk
ed
csk
dbc
cbh
afb
dbc
tbi
tbi
cgc
cbm
pga
ggq
csk afb pga
ggq
w
cgc
tbi
tbk
dbc
tbi
agm
cgc
cgc
cbs
afb
afb
jba
jba
asa
cgc
ags
agm
jeajea
cgg
xsg
ags
agm
ags
agm
cby
agm
ags
asa
jbc
agm
cbs
ags jea
ags
asa
ags
cgh
afa
ags
asa
jea
xsg
tbg
cgh
agm
cgc
jbc
ags
xlu
xlu
cac
xch
agm
elb
xch
agm
elb
agm
ags
xch
agm
xch
xci
asa
xci
esaxlj
ags
agm
ccd
agm
ags
cac
asa
cac
xch
agm
asa
ags
agm
cbu
xci
cbh
csk
csk
cgc
agm
asa
asa
cgh
asa
asa
asa
cac
jba
cbw
cbh
cbm
csm
cgc
afb
afb
ggq
ggq
csk
csk
asa
asaxci
clo
xlh
asa
asa
xch
ags
xch
asa
xci
xci
xci
asa
ags
xsg
xsg
csk
csk
agm
cbm
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ags
ags
ags
ags
asa
xch
ags
ags
ags
jbg
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ags
asa
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xsg
agm
asa
ags
ags asa
asa
afa
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ags
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xch
asa
jea
afa
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agmasa
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cra
cgg
cbm
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tbj
dbc
dbc
dbc
cbh
cbh
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cbw
ags
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asa
jea
jea
cbh
cra
cgh
cbm
cgg
ags
cbm
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jbc
xci
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xlh
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cbm
ags
cck
afk
afk
dbc
tbj
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cbv
cgc
cgc
cgc
cbs
cbs
cbs
cgc
cck
dba
agm
cck
ags
jba
cbhgge
cgg
cgh
xch
xch
xci
agm
xlu
jea
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asa
asa
asa
jea
ggq
ggq
cac
cgg
xch
cgg
cgg
cbs
cbs
ags
asa
cra
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cbu
ags
ags
csm
cbm
cbs
cgc
cck
cbs
cbm
cbm
cck
jba
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w
f
w
csk
csk
cbh
ags
ags
cbu
cbs
cbs
cbh
cbu
cbu
jbc
cgg
cgg
xch
cbu
csk
cbs
jba
ggq
ags
gge
ggq
jbc
tbg
cbs
csm
cbm
cbu
cbm
cbm
xsg
csk
csk
csk
afa
jba
tbg
agm
wla
xch
xch
xlh
ags
xlj
clo
xci
xlh
xlj
xlh
xlh
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es
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w
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oc
afa
ccd
xch
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asa
xch
cac
clx
ccm
cac
clx
agm
agm
ccd
es
xch
cgg
ccd
ccd
ccd
ccd
ccd
xch
xch
ggq
R
R
R
R
R
dbd
R
R
tbj
cra
R
R
R
agscbu
ccd
agm
jea
R
R
R
R
R
R
R
R
R
R
R
R
RR
R
jea
jea
R
ags
tbj
w
agm
ags
cgccbs
ags
agm
R
R
5 50 10 15 20 25 KILOMETERS
105 0 5 15 20 MILES
CONTOUR INTERVAL 100 METERSSUPPLEMENTARY CONTOUR INTERVAL 50 METERS
1989 MAGNETIC DECLINATION FROM THE NORTH VARIES FROM 11.5ß (204 MILS) EASTERLY FOR THE CENTER OF THEWEST EDGE TO 10.5ß (187 MILS) EASTERLY FOR THE CENTER OF THE EAST EDGE. MEAN ANNUAL CHANGE IS 4.9’ WESTERLY
SCALE 1:250 000
ARIZONANEW MEXICO
UTAH
STERLINGI-1092
LAMARI-944
LA JUNTA
I-560
TRINIDADI-558
SALINAI-591
SHIPROCK
I-345
GALLUPI-981
ESCALANTE
I-744CORTEZ
I-629
MOABI-360
GRANDJUNCTION
I-736
MONTROSEMF-761
DURANGOI-764
LEADVILLEI-999
COLORADO
RIVER
PHOENIX
SALT LAKECITY
SANTA FE
PUEBLO
I-1022
ARKANSASRIVER
RIO
GR
AN
DE
GR
EEN
RIVER CRAIGI-972
LIMONI-1250
MF-2347I-1163
DENVER
COLORADO
AZTECI-1730
MARBLECANYON
I-1003
FLAGSTAFFI-1446
GREELEYOF 78-532VERNAL
I-1526
RICHFIELDI-1901
PRICEI-2462
SALT LAKECITYI-1997
116˚ 114˚ 112˚ 110 ˚ 108˚ 106˚ 104˚ 102˚
42˚
40˚
38˚
36˚
34˚
32˚
0 100 200 MILES
0 100 200 KILOMETERS
INDEX MAP SHOWING AREA OF PUEBLO QUADRANGLE,COMPANION GENERALIZED SURFICIAL GEOLOGIC MAP
OF THE DENVER QUADRANGLE (shown in gray), AND OTHER PUBLISHED 1˚ x 2˚ GEOLOGIC MAPS
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