SURFICIAL DEPOSITS

Artificial fill and quarries (Holocene)

Stream-channel deposits (Holocene)

Modern flood-plain deposits (Holocene)

Ponded sediments (Holocene)

Dune sand and sand-sheet deposits (Holocene)

Eolian sand-sheet deposits (Holocene)

Linear-dune deposits (Holocene)

Parabolic-dune deposits (Holocene)

Barchan-dune deposits (Holocene)

Young alluvial fan deposits (Holocene)

Young terrace-gravel deposits (Holocene)

Young flood-plain deposits (Holocene)

Intermediate-age alluvial fan deposits (Holocene)

Intermediate-age terrace-gravel deposits (Holocene)

Intermediate-age flood-plain deposits (Holocene)

Old flood-plain deposits (Holocene)

Mixed alluvium and eolian deposits (Holocene)

Silt-dune deposits (Holocene)

Old terrace-gravel deposits (Holocene)

Valley-fill deposits (Holocene and Pleistocene?)

Old alluvial fan deposits (Holocene and Pleistocene)

Talus and rock-fall deposits (Holocene and Pleistocene)

Landslide deposits (Holocene and Pleistocene)

Older terrace-gravel deposits (Pleistocene)

Old sand-dune deposits (Pleistocene and Pliocene?)

Old eolian sand-sheet and dune deposits (Pleistocene and Pliocene?)

Older alluvial fan deposits (Pleistocene and Pliocene?)

Oldest terrace-gravel deposits (Pleistocene and Pliocene?)

“Dilkon deposits” (Pleistocene? and Pliocene?)

“Shonto deposits” (Pleistocene? and Pliocene)

VOLCANIC ROCKS

Volcanic rocks of Hopi Buttes (Tsezhin Bii) Volcanic Field (Miocene)

Intrusive dikes, plugs, or necks (Miocene)

Volcanic-crater sedimentary rocks (Miocene)

Mafic monchiquite and basanite flows (Miocene)

Mafic tuff-and-ash deposits (Miocene)

Mixed monchiquite and basanite flows and tuff deposits, undivided (Miocene) 

Bidahochi Formation (Pliocene and Miocene)

Lower mudstone and argillaceous sandstone member (Mioc

Mancos Shale (Upper Cretaceous)

Dakota Sandstone, undivided (Upper Cretaceous)

Glen Canyon Group (Jurassic)

Kayenta Formation (Lower Jurassic)

Moenave Formation (Lower Jurassic)

Upper sandstone member (Lower Jurassic)

Chinle Formation (Upper Triassic)

Owl Rock Member (Upper Triassic)

Petrified Forest Member (Upper Triassic)

Shinarump Member (Upper Triassic)

Moenkopi Formation (Middle? and Lower Triassic) 

Holbrook and Moqui Members, undivided (Middle? and Lo

Lower massive sandstone member (Lower Triassic) 

Kaibab Formation (Cisuralian)

Coconino Sandstone (Cisuralian)

EXPLANATION OF MAP SYMBOLS

Contact—Contacts between all alluvial and eolian units are appro

arbitrary

Fault—Dashed where inferred or approximately located; dotted w

bar and ball on downthrown side. Number is estimated fault 

meters

Folds—Showing trace of axial surface and direction of plunge; d

approximately located; dotted where concealed

Anticline

Plunging anticline—Showing direction of plunge

Syncline

Plunging syncline—Showing direction of plunge

Monocline

Dome

Strike and dip of beds

Inclined bedding—Showing strike and dip where measured in 

Implied bedding—Showing approximate strike as interpreted 

graphs; dip amount not determined

Strike of vertical and subvertical joints—Interpreted from aeria

symbol placed where joints are most visible on aerial photog

Collapse structure—Showing circular collapse structure charact

dipping inward toward a central point

Sinkhole—Enclosed depression or cave. Sinkholes breached by d

shown

Volcanic vent

 

Qf

Qs

Qaf

Qps

Qd

Qes

Qdb

Qdp

Qdl

Qa1

Qg1

Qf1

Qf2

Qg2

Qa2

Qf3

Qae

Qsd

Qa3

Qv

Qg3

Qtr

Ql

Qg4

QTa

QTes

QTd

QTg4

QTdi

QTs

Tbl

Km

Kd

Jk

Jm

Jms

^co

^cp

^cs

^mhm

^mss

Pk

Pc

Ti

Tc

Tm

Tmt

Tmu

40

35

TUCKER MESA NW TUCKER MESA NE WINSLOW NW WINSLOW NE STANDING HORSE

MESA

ROTTEN BANANAS

BUTTE

TURKEY TRACK BUTTE MITTEN PEAK

TUCKER MESA SW TUCKER MESA WINSLOW RINCON RANCH HUMPY CAMP WELL BLAIRS SPRING LEE MOUNTAIN HENNESSY BUTTES

NEWBERRY MESA SHONTO BUTTE DILKON NA AH TEE CANYON INDIAN WELLS

OLD LEUPP EAST OF OLD LEUPP BIRD SPRINGS WASH ELEPHANT BUTTE CHIMNEY BUTTE FRENCH BUTTE SUNFLOWER BUTTE FIVE BUTTES

TOLANI LAKE MONTEZUMAS MONTEZUMAS CHAIR

CHAIR NW

TUCKER MESA NW TUCKER MESA NE WINSLOW NW WINSLOW NE STANDING HORSE

MESA

ROTTEN BANANAS

BUTTE

TURKEY TRACK BUTTE MITTEN PEAK

TUCKER MESA SW TUCKER MESA WINSLOW RINCON RANCH HUMPY CAMP WELL BLAIRS SPRING LEE MOUNTAIN HENNESSY BUTTES

NEWBERRY MESA SHONTO BUTTE DILKON NA AH TEE CANYON INDIAN WELLS

OLD LEUPP EAST OF OLD LEUPP BIRD SPRINGS WASH ELEPHANT BUTTE CHIMNEY BUTTE FRENCH BUTTE SUNFLOWER BUTTE FIVE BUTTES

TOLANI LAKE MONTEZUMAS MONTEZUMAS CHAIR

CHAIR NW

INDEX MAP SHOWING 7.5′ QUADRANGLES IN WINSLOW 30′ × 60′ QUADRANGLE, NORTHERN ARIZONA

35°00'

35°15'

35°30'

111°00' 110°30' 110°00'

Any use of trade, product, or firm names in this publication is for descriptive 

imply endorsement by the U.S. Government

This map was printed on an electronic plotter directly from digital files. Dime

between electronic plotters and between X and Y directions on the same plo

size due to atmospheric conditions; therefore, scale and proportions may no

For sale by U.S. Geological Survey, Information Services, Box 25286, Federal 

1–888–ASK–USGS

Digital files available at http://pubs.usgs.gov/sim/3247/

Suggested Citation: Billingsley, G.H., Block, D., and Hiza Redsteer, M., 2013, G

30’ x 60’ quadrangle, Coconino and Navajo Counties, northern Arizona: U.S. G

Investigations Map 3247, pamphlet 25 p., 3 sheets, scale 1:50,000, available a

http://pubs.usgs.gov/sim/3247/.

Geologic Map of the Winslow 30’ x 60’ Quadrangle, Coconino and Navajo Counties, Northern Arizona

By

George H. Billingsley, Debra Block, and Margaret Hiza Redsteer

2013

Qaf Qs Qf Qps Qd Qes Qdl Qdp Qdb Qa1 Qg1 Qf1 Qa2 Qg2 Qf2 Qf3 Qae Qsd Qg3 Qv Qa3 Qtr Ql

Qg4

QTd QTes QTa QTg4 QTdi QTs

Ti Tc Tm Tmt Tmu

Tbl

Km

Kd

Jk

Jm

Jms

^co

^cp

^cs

^mhm

^ms

Pk

Pc

Unconformity

Unconformity

Unconformity

Unconformity

Unconformity

Unconformity

Unconformity

QUATERNARY

TERTIARY

TERTIARY

Holocene 

Pleistocene 

Pliocene 

Miocene 

Miocene TERTIARY 

Lower Jurassic 

Upper Cretaceous CRETACEOUS 

SEDIMENTARY ROCKS

VOLCANIC ROCKS

Volcanic rocks of Hopi Buttes

(Tsezhin Bii) Volcanic Field

JURASSIC 

Middle(?) and

Lower Triassic 

Lower Triassic 

Cisuralian PERMIAN PALEOZOIC

MESOZOIC

CENOZOIC

Upper Triassic 

TRIASSIC