list of map units - u.s. geological survey … pkf pkh ptw ptb qv qv qaf qg1 qt qg1 ti qa5 qa2 qa2...
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Qaf Artificial fill (Holocene)
Qs
Qf
Qg1
Qa1
Stream-channel alluvium (Holocene)
Floodplain or ponded deposits (Holocene)
Young terrace-gravel deposits (Holocene)
Young alluvial fan deposits (Holocene)
Qc
Qv
Ql
Qg2
Qa2
Qg3
Qt
Colluvial deposits (Holocene and Pleistocene)
Valley-fill deposits (Holocene and Pleistocene)
Talus deposits (Holocene and Pleistocene)
Landslide deposits (Holocene and Pleistocene)
Young intermediate terrace-gravel deposits (Holocene and Pleistocene)
Young intermediate alluvial fan deposits (Holocene and Pleistocene)
Old intermediate terrace-gravel deposits (Pleistocene)
Qa3
Qg4
Qa5
QTa
Old intermediate alluvial fan deposits (Pleistocene)
Old terrace-gravel deposits (Pleistocene)
Old alluvial fan deposits (Pleistocene)
Oldest alluvial fan deposits (Pleistocene)
Quaternary and Tertiary alluvium (Pliocene and Pleistocene)
VOLCANIC ROCKS
SURFICIAL DEPOSITS
Poverty Mountain Basalt (Pliocene)
Intrusive dike
Pyroclastic deposits
Basalt flows
Basalt of the Shivwits Plateau (Miocene)
Intrusive rocks
Pyroclastic deposits
Basalt flows
Tpi
Tpp
Tpb
Tsi
Tsp
Tsb
Intrusive rocks in Pigeon Canyon (Miocene)Ti
SEDIMENTARY ROCKS
^ms
^mm
^mv
^ml
^mt
Moenkopi Formation (Lower Triassic)
Shnabkaib Member (Lower Triassic)
Middle red member (Lower Triassic)
Virgin Limestone Member (Lower Triassic)
Lower red member (Lower Triassic)
Timpoweap Member (Lower Triassic)
Kaibab Formation (Lower Permian)
Harrisburg Member (Lower Permian)
Fossil Mountain Member (Lower Permian)
Toroweap Formation (Lower Permian)
Woods Ranch Member (Lower Permian)
Brady Canyon Member (Lower Permian)
Seligman Member (Lower Permian)
Hermit Formation (Lower Permian)
Supai Group (Lower Permian and Upper Pennsylvanian)
Esplanade Sandstone (Lower Permian)
Pakoon Limestone (Lower Permian)
Supai Group, undivided (Upper Pennsylvanian)*s
Pkl
Pe
Ph
Pts
Ptb
Ptw
Pkf
Pkh
Qa4
Qaf Qs Qf Qg1
Qg2
Qg3
Qg4
Qa1
Qa2
Qa3
Qa5
Unconformity
Unconformity
Unconformity
QTa
Tpp
TpbTpi
Tsp
Tsb
TsiTi
Unconformity
VOLCANIC ROCKS
SEDIMENTARY ROCKS
^ms
^mm
^mv
Unconformity
^ml
^mt
Unconformity
Pkh
Pkf
Unconformity
Ptw
Ptb
Pts
Unconformity
Unconformity
Ph
Pe
Pkl
*s
Qc Qv Qt
SURFICIAL DEPOSITS
Holocene
Pleistocene
Pleistoceneand Pliocene
Pliocene
Miocene
LowerTriassic
LowerPermian
UpperPennsylvanian
QUATERNARY
QUATERNARYand TERTIARY
TERTIARY
TRIASSIC
PERMAIN
PENNSYLVANIAN
CORRELATION OF MAP UNITS
Qa4
Ql
U.S. DEPARTMENT OF THE INTERIORU.S. GEOLOGICAL SURVEY
Prepared in cooperation with theNATIONAL PARK SERVICE and
BUREAU OF LAND MANAGEMENTPamphlet accompanies map
MISCELLANEOUS FIELD STUDIES MF-2387
Base from U.S. Geological Survey, 1:24000, Last Chance Canyon, Mustang Point, Poverty Spring, Wildcat Ranch, Arizona 1971
Universal Transverse Mercator Projection1927 North American DatumClark 1866 Ellipsoid, Zone 12
Geology mapped in 1997-1998 by G.H. BillingsleyDigital database by J.L. Wellmeyer, M.L. Harr, and S.S. Priest
Manuscript approved for publication February 8, 2002
GEOLOGIC MAP OF THE HIDDEN HILLS AND VICINITY, MOHAVE COUNTY, NORTHWESTERN ARIZONA
By George H. Billingsley, Jessica L. Wellmeyer, Michelle L. Harr, and Susan S. Priest
2002
TR
UE
NO
RT
H
MA
GN
ET
IC N
OR
TH
APPROXIMATE MEAN
DECLINATION, 1997
13.5O
1 1/2 0 1 MILE
1 .5 0 1 KILOMETER
SCALE 1:31,680
CONTOUR INTERVAL 20 AND 40 FEET
ARIZONA
MAP LOCATION
This map was printed on an electronic plotter directly from digital files. Dimensional calibration may vary between electronicplotters and between X and Y directions on the same plotter, and paper may change size due to atmospheric conditions;therefore, scale and proportions may not be true on plots of this map.
For sale by U.S. Geological Survey, Information Services, Box 25286, Federal Center, Denver, CO 80225
Available on World Wide Web at http://geopubs.wr.usgs.gov/map-mf/mf2387/
Any use of trade, firm, or product names in this publication is for descriptive purposes only and does not imply endorsementby the U.S. Government
Printer set upMiro
portrait32W x 52H
Contact
Syncline
Anticline
Strike and dip of beds
Doubly plunging syncline
Fault—Dashed where inferred or approximately located; dotted where concealed; bar and ball on downthrown side. Faults shown as bounding alluvium do not offset alluvium. Number is estimated separation displacement in meters
Landslide Scarp—Headward scarp of landslide; hachures point in direction of slide
Folds—Showing trace of axial surface and direction of plunge; dotted where concealed
Monocline
Inclined—Measured in the field
Implied—Interpreted from aerial photographs, dip amount not determined
Strike of vertical and subvertical joints
Collapse Structure—Circular collapse structures characterized by strata dipping inward towad central point. On Kaibab Formation surface, (Pkh, Pkf) may reflect collapse of deep-seated breccia pipe that originated in Redwall Limestone
Sinkhole—Enclosed depression or cave
Flow direction of basalt
Volcanic Vent
14
C
LIST OF MAP UNITS
12
36°30'00"
T. 36 N.T. 35 N.
113°45'00"
T. 35 N.T. 34 N.
T. 34 N.T. 33 N.
T. 35 N.T. 34 N.
T. 34 N.T. 33 N.
T. 36 N.T. 35 N.
36°27'30"
36°25'00"
36°22'30"
36°20'00"
36°17'30"
36°15'00"113°45'00" 113°42'30" 113°40'00" 113°37'30" 113°35'00" 113°32'30" 113°30'00"
36°30'00"
36°27'30"
36°25'00"
36°22'30"
36°20'00"
36°17'30"
36°15'00"
113°42'30" 113°40'00" 113°37'30" 113°35'00" 113°32'30" 113°30'00"R. 12 W. R. 11 W.R. 14 W. R. 13 W.
R. 12 W. R. 11 W.R. 14W. R. 13 W.
EXPLANATION
58
12
37
6
40
12
37
25
24
23
60
55
12
38
37
4.5
45
45
6 6
12
18
6
52
36
12
24
30
43
2
2
3
2
5
4
3
12
C
C
C
2
6 7
5
C
4
4
C
1
C
C4
2
2
2
2
10
402
2
7
2
PIG
EO
N
FAU
LT
Ph
Qt
Qa1
Ptb
Pkh
Qv
Qv
Pkh
Pkh
Pkf
Ptb
Qa2
Ptb
Pkh
Ptw
Ph
Qa3
Pkh
Pkh
Tpb
Qt
Pkf
Ph
Qt
Qt
Ql
Ph
Pkl
Qa3
Pe
Qa1
Qt
Pkh
Ql
Qa4
Qt
Pkf
Qa2
Ph
Ph
Pkh
QTa
Qa1
Qa1
Pe
Pkh
Pe
Pe
Pe
Pkh
Qa2
Qa2Qt
QTa
Pkh
Ql
Qt Qt
Ptb
Pkh
Ph
Qt
Qt
Ph
Qt
Ph
Pts
Pts
Qs
Qa2
Pts
Ph
Pkf
Ptb
Pkf
Qa3
Qa2
Qa4
Qa4
Qt
Ph
Pkf
Pkf
Pts
Ptw
Pkf
Qg1
Qg1
Pe
Qa3
Ph
PtwQv
Pe
Ph
Pkf
Ptw
Pe
Qa3
Qt
Ph
PkfPts
Pts
Pkh
Qa3
Pe
Qa2
Ph
Ph
Qt
Ptw
Qa5
Qa3
Qa2
Qaf
Qa3
Qt
Qt
Ptw
Ptb
Pkf
Qa2
Qt
Pts
Pts
Pe
Qa3
Qa2
Qa2
Pe
Qa3
Pkl
Qg1
Qa2
Qa2
Qa3
Ph
Pts
Ptb
Qt
Qt
Qa1
Ph
Pkf
Qa1
Pkf
Ptb
Ptb
Qg1
Ptb
PhQa2
Pts
Pts
Qt
Ptb
Pkf
Pkf
Pkf
Pkf
Pkf
Qg1
Pkh
Qa1
Qg1
QcQc
^ml
Pkh
Qa1Qv
Qv
Qv
Qa1
QTa
Tsb
QTa
TsbQg1
^ml
Qt
Ph
^mt
^mt
^mt
Qv
Qv
Qa1 Qf
Qv
Qaf
Qaf
^mt
Qa1
Qa1
Qa1
Qaf^mt
Qaf
Qv
Qv
Qa1
Qv
Qs
QvQaf ^mt
Pkh
Qv
Qaf
Pkh
Qaf
Qa1Qa3
Qa3Qa3
Qa2
Qt
Qa1
Qaf
^mv^mv
^ml
Qc
Qt
^ms
^ms
QcQc
Qt
^ml
Ql
Tpp
Tpi
^ms
^msQt
^ms
Qt
^ms
Ql
^ms
^ms
^ms
Qa1Qc
Qc
Qt
Ql
^mm
Tpb
Qg1
Qa2
Tpb
Tpb ^mm
^ms
^mmQa2
QtQt
Qa2
Qa3
Qs
Qg2Qg1
^ml
^mv
Qg1Qg4
Qc
Qc
^ms
Qt
^ml
^mv
Qaf
Qa1
Qa2^ml
^ml
PkhQa1
Qa2Ql
^mv
^mm
Qt ^mv
^ml
^mv
Qa2
Qaf
Qa3
Qa4
Qt
Qt
Qg3
Qg3
Qg4
Qg1
Pkf
Qg2
Qg1
Qg1Qs
Qg2
Qg3Qg1
Qg1
Qv
^mt
Qg1Qv
Pkh
Qg1 Qv
Qa1
Qa2
Qa2
Qa1
Qv
Qv
Qv
Qg1
Qaf
Pkh
^mt
Pkh
Qa1
Qa2
QTa
Qa2
Qv
Qv
Qv
Qv
PkhQt
Ql
Qt
Tsi
Tsp
Qt
TsiQl
Tsb
Qa1
Pkh
Qa2
Qv
Qa1
Qa3Pkh^ml
Qaf
Qa2
Qa1
Qa2
^ml
Qa1
Qa2
Qt
Ql
QTa
Tsb
Qt
Tsi
Tsp
^mm
Pkf
Qa1
^mm
^mv
^ml
Qc
^mm
QTa
Qv
^mv^ml
^ms
^ml
TsiTsp
QTa
QTa
QTa
Qv
Tsb
Qv
Qa2
Qg3
Qv
Tsb
QTa
Qv
Qv
QTa
QTa
Qv
Qa1
Qg1
^ml ^ml
^mlQv
QTa
Tsb
Qv
QTa
Qg1
Qv
Tsb
Qa1Qs
QTaQg2
Qg2
Qg1
Qg1
Qv
Qv
Tsi
Pkh
Qt
Qt
Qt^ml
QTa
Qaf
Qv
Qv^ml
Qg4
Qg3
Qg2
Qg2 Qg4
Qg3
Qg3
Qv
Qg2
Pkh
Qa1Qs
Qg2
Qg1
Qa1
Qa3
Qa3
Qa1
Qf
Qt
Qa2
QtPkh
Qaf
Qa1
QtQc
Qa1
Qg2
Qg1
Qg2
Ptw Qa1
Qa2
Qaf
Qv
Qv
Qv
Qaf
Qa2
Qaf
Qv
^mt
Qa1
Qv
Qv
Qaf
Qv
Qv
Pkh
Qv
Pkh
Pkf
Ptw
Qa1
Ptw
Ptw
Qg2
Qaf
Qg2
Qv
Pkf
Pkf
Qaf
Qg2
Qa1
Qa1
Pkf
Qa1
Qg2
Qv
Qv
Qv
Qv
Qv
Qg2
Qaf
Qg1
Qg3
Qg3Qg1
Qg2
Qg2
Qa1
Qg1
Qt
Qg2
Qg1
Qa1
Qg3
Qg1
Qg2
Qv
Qv
Qg2
Qv
Qaf
Qv
Pkh
Qv
Pkh
Qaf
Qv
Qaf
Qv
Qaf
Qv
Qaf
Qv
Qv
Pkh
Pkf
Ptw
Qv
Ptb
Ptw
Ptw
Qa1
Qa1
Qa1
Ptb
Qg2
Qt
Qg1
Ptb
Ptw
Ptb
Qv
Qa1
Qg1
Ptw
Pts
Ptw
Qaf
Ptw
Pkf
PtbQg1
Ph
Ptb
Pts
Qa1
Ptw
Qt
Pts
Qa1
PtsPts
Ptw
Pts
Ptw
Ph
QsQt
Qg3
Qa1 Qt
PhPts
Pts
Pts
Qg3Qs
Qg3
Qg1
Ql
Ph
Ptw
Pkf
Qt
Qg3
Ptb
Qt
Pts
Ptb
Ph
Ptw
Qt
Ph
Ptb
Qg2
Qa1
Qg1
Pts
Pe
Ph
Qa2
Qa4
Qa3
PtsQt
Qt
Qa1
Ptb
Pts
Qa2
Qa3 Qt Pts
Qa3
Ptb
PtsPts
Qa2
Pts
Qa3
Qa2
Qa3
Pkf
Pts
Ptw
PtsQa2
Qa1 Pts
Pkf
Ptw
PtbPh
Qa1
Qa1
Pts
Qt
Qa3
PhPts
Qa1
Ptb
Qa3
PhQt
Qa2
Qa1
Pts
Qa3
Qa2
Pe
Qa2
Qa1
Qa3
Qa3
Ph
Pts
Qa3
Qa2
Pe
Qa1
Qa5
PhQt
Pe
Qa1
Qa3
Qa3Ph
Pts
QtPe Qt
Qa1
Ptw
Pts Pts
Ph
QsQg1
Qa5
QtPts
Ph
QtPh
Qa1
Ptw
Pts
Qg1
QtQs
Ptw
PtbPts
Qg1Ptw
Qa1
Qt
Qg1
Qa1 Qg1Ptw
Qa1
Qt
Qg1
Qaf
Qv
Pkh
Qv
Qv
Qa1
QvPtw
Ptb
Ptw
Qv
Qa1
Pkh
Ptw
Qg1
Qv
Ptw
PtsQt
Qa1
Ph
Qt
Qa1
Ti
Qa3
Qg2
Pe
Qa3
Qg1
Qa2
QsQs
Qg3Qa3Qv
Qa3
*s
PklQg2
Qa1Qa2
Qa5
Qa2
Pe
Qa1
Qa1
Qa3
Qa3
QtQt
Pkf
Qa2
Qa3
Qa4
PtsQa4
Qa1
Qt
Ph
Pkf
Ptw
Pts
Ptb
Ptw
Pkh
Qa3Qa4
Pts
Qa3
Pe
Qa1
Qa4
Ph
Ptb
Pts
Ptw
Qt
Pts
Qa1
Qt
Qa2
Ptw
PtbPh
Qa2Pts
Ptw
Pkf
Ph
Qa1
Qa3
Qt
Ph
Qa3
Qa3
Ph
Qa3Qa2
Qa3
Qa4
Qa3
Qa2
Ti
Qa3
Qa2
Qaf
Qa3
Qa1
Qt
Qa3
Pts
Qt
Qa1
Pts PtbQa2
Qa2
Qa1
PtbPtw
Pts
Ptw
Pkf
Ph
PtsQa2
Qa2
Qa3
Qt
Qa3
Qa4
Qa2
Qt
Qa3
Ph
Ptb
Qa2
Ph
Pts
Qt
Qa3
Qa4
Qa4
Ptw
PePkl
Qa4
Qa3
Qa4
Qa5
Ph
Pts
PtwQv
Qt
Pts
Qa5
Pe
Pts
Qa2
Qa4
Ptw
Pts
Pts
Ptw
Ptb
Ptw
Ptb
Qg1
Qaf
Ptb
Ptw
Qa1
Qt
Qg1
Qt
Pkf
PtwQa1
Ph
Qa3
Qg2
Ph
Qt
Qg1
Qa1
Ptw
Qf
Qg2
Qg1
Ptw
Qa1Qv
Qg1
Ptw
Pkh
Pkf
Pkh
Pkf
Pkh
Ptw
Ptb
Qv
Qv
Qaf
Qg1
Qt
Qg1
Ti
Qa5
Qa2Qa2
Ph
Qa2
Qt
Qv
Pkf
Qt
Qs
Pts
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