15

4

7

2

5

13

5

7

24

20

2

3

1

1

2

1327

13

C

C

C

4

9

2

2

24

5

5

83

7

2

15

1

5

7

5

17

7

6

2

8

10

22

15

27

5

5

2

1

2

20

28

8

6

16

PkfQaF

Pkf

Pkh

Pkh

Pkf

PkfQv

Qv

Qv

Pkh

QaE

Qaf

QgF

QaF

QvPkh

Pkf

Pkf

Pkh

QvQt

QaE

QaF

Pkh

QaE

^m

QtQaG

QaF

QaG

QdQgE

QaG

QaG

Ql

QaF

QaE Qs

QgF

Ql

^cp

QaE

QaF

Ql

^cp

QaE

Jmod

Jmos

QaE

^cp

Jmod

Jk

Jmos

Ql

Qd^co

QaFQl

Jk

^cp

^coQl

Jn

Qd

Qd Jn

Jn

Qd

Qd

Jn

Jn

Jn

Jn

Jn

Jn

Jn

Jn

Qd

Qd

Qd

JnJn

Jn

Jk

Qd

Pkh

Pkf

Pkf

QaEQaG

QaG

QaG

QaF

Pkh

Pkh

Qv

Qv

Qv

Pkh

Pkf

Pkf

Qv

Pkh

Pkf

Pkh

Pkf

Pkf

Qv

Pkf

Pkh

Pkf Ptw Ql

Qt

QaG

Ph

QaE

^m

PkfQaF

QtPkh

QaE

Qv

Pkf

Pkh

Ptw

Pkh

QaF

QaEPkh

QaG

^m

QaG

QaE

QaF

Pkf

QaE

Pkf

Pkh

QaG

^m

Pkh

Pkf

QaE

QaF

Qt

Ptw

Ptw

Pkf

QaE

QaG

QaG

Qaf

Qaf

Pkh

Qv

Pkh

Pkf

Qt

QaE

Pkf

Pkh

Qv

Pkf

Pkh

Qa4QaG

QaF

Ql

^co Ql

Jmos

Jk

Qd

Qd

JnJn

Jn

QdJmosQs

QaF

QgE

^co

Qd

QgE

QaF

Qaf Qd

Jn

Jn

QgF

Jmod

Jmos

QaF

Jk

QaFJn

QaG

Jn

QaF

Pkh

^m

^cs

QaF

160

160

50

40

240

240

160

45

40

100

10

16045

65

152

2

TR

AIL

CAN

YON

FAU

LT

LOW

ER

EA

ST

KAIB

AB

MO

NO

CLIN

E

UPP

ER

EAST

KAIBAB

MO

NOCLI

NE

Qv

QafQv

EA

ST

KA

IBA

BM

ON

OC

LIN

E

Qaf

Ptw

Ql

Pts

Ptb

QgFQv

Ptw

Jmod

QgE

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/mf2367/

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

Upper

Triassic

LowerPermian

Middle(?) and Lower Triassic

Holocene

Pleistocene

QUATERNARY

TRIASSIC

PERMIAN

JURASSIC

Qaf Qs Qd

SURFICIAL DEPOSITS

Qa

Qa

Qg Qa

Qa Qv Qt

3

4

1 1

2

Unconformity

Unconformity

Jn

Jk

Jmos

Jmod

^co

^cp

^cs

^m

Pkf

Pkh

Ptw

Ptb

Pts

Ph

Qaf

Qs

Qd

Qv

Qg1

Qa 1

Qt

Ql

Qa2

Qa3

Qa4

Jn

Jk

Jmos

Jmod

^co

^cs

^cp

^mMoenkopi Formation, undivided (Middle? and Lower Triassic)

Kaibab Formation (Lower Permian)

Harrisburg Member

Toroweap Formation (Lower Permian)

Fossil Mountain Member

Pkh

Pkf

Woods Ranch Member

Brady Canyon Member

Seligman Member

Hermit Formation (Lower Permian)Ph

Ptw

Ptb

Pts

Kayenta Formation (Lower Jurassic)

Shinarump Member

Petrified Forest Member

SEDIMENTARY ROCKSSURFICIAL DEPOSITS

LIST OF MAP UNITS

Artificial fill and quarries (Holocene)

Stream-channel alluvium (Holocene)

Sand-sheet and dune deposits (Holocene)

Young terrace-gravel deposits (Holocene)

Young alluvial fan deposits (Holocene)

Valley-fill deposits (Holocene and Pleistocene)

Talus deposits (Holocene and Pleistocene)

Landslide deposits (Holocene and Pleistocene)

Old terrace-gravel deposits (Holocene and Pleistocene)

Old intermediate alluvial fan deposits (Pleistocene)

Young intermediate alluvial fan deposits(Holocene and Pleistocene)

Old alluvial fan deposits (Pleistocene)

Glen Canyon Group (Lower Jurassic)

Navajo Sandstone (Lower Jurassic)Surficial deposits (Holocene and Pleistocene)

Owl Rock Member

Dinosaur Canyon Member

Springdale Sandstone Member

Moenave Formation (Lower Jurassic)

Chinle Formation (Upper Triassic)

15

C

Qg 2 Ql

Qg 2

Prepared in cooperation with the

U.S. NATIONAL FOREST SERVICE

Universal Transverse Mercator Projection

1927 North American Datum

Clark 1866 Ellipsoid, Zone 12

COCONINO COUNTY, NORTHERN ARIZONA

2001

SCALE 1:24,000

1 KILOMETER

ARIZONA

QUADRANGLE LOCATION

GEOLOGIC MAP OF THE HOUSE ROCK SPRING QUADRANGLE,

Base from U.S. Geological Survey, 1:24,000, House Rock Spring Quadrangle, 1988

Pamphlet accompanies mapMISCELLANEOUS FIELD STUDIES MF-2367DEPARTMENT OF THE INTERIOR

U. S. GEOLOGICAL SURVEY

ByGeorge H. Billingsley and Haydee M. Hampton

11207 30 11205 00 11202 30 11200 00

11207 30 11205 00 11202 30 11200 0036 45 00

36 47 30

36 50 00

36 52 30

36 45 00

36 47 30

36 50 00

36 52 30

CORRELATION OF MAP UNITS

Unconformity

Unconformity

Unconformity

Unconformity

Lower

Jurassic

SEDIMENTARY ROCKS

TR

UE

NO

RT

H

MA

GN

ET

IC N

OR

TH

APPROXIMATE MEANDECLINATION, 1997

13.5O

EXPLANATION

Contact

Fault

Folds

Monocline

Syncline

-(Approximate contact for surficial units and between the Harrisburgand Fossil Mountain Members of the Kaibab Formation)

-Dashed where inferred or approximately located; dotted whereconcealed; bar and ball on downthrown side. Number is estimatedfault separation in feet

-Showing trace of axial surface and direction of plunge; dashed whereapproximately located; dotted where concealed

-Axial trace drawn approximately along steepest part of fold

Anticline

Strike and dip of beds

Inclined

Strike of vertical and subvertical joints

Sinkhole

-As indicated on aerial photos

-Measured in the field

30

CONTOUR INTERVAL 40 FEET

DATUM IS MEAN SEA LEVEL

Geology mapped in 1999 by G.H. BillingsleyDigital database by H.M. Hampton

Edited by Jan L. ZiglerManuscript approved for publication April 23, 2001

Collapse Structure(possible breccia pipe)

1 0.5 0 1 MILE

1 0.5 0

O

Inclined