Scientific Investigations Map 3227 U.S. Department of the Interior Prepared In Cooperation With The Sheet 3 of 3 U.S. Geological Survey National Park Service, U.S. Forest Service, Navajo Nation, and Hopi Tribe Pamphlet accompanies map CORRELATION OF MAP UNITS

SURFICIAL DEPOSITS Tonto Group (Middle and Lower(?) Cambrian) Qaf Qs Qf Qes Qd Qdl Qdp Qdb Qdm Qdlu Qg1 Qa1 Qg2 Qa2 Qps Qg3 Qa3 Qae Qv Holocene LIST OF MAP UNITS QtrQt Ql QUATERNARY [Some polygons on the map are too small to distinguish the color for unit identification. These m Muav Limestone (Middle Cambrian) QTg4 QTg5 QTg6 QTg7 Pleistocene polygons are labeled where possible. Unlabeled units are attributed in the geodatabase] ba Bright Angel Shale (Middle Cambrian) Pliocene SURFICIAL DEPOSITS Tgs TERTIARY t Tapeats Sandstone (Middle and Lower(?) Cambrian) Miocene Qaf Artificial fill and quarries (Holocene) NEOPROTEROZOIC ROCKS VOLCANIC ROCKS Qs Stream-channel deposits (Holocene) Zs Sixtymile Formation, undivided (Neoproterozoic) Qf Flood-plain deposits (Holocene) Chuar Group (Neoproterozoic) Qi Qsp Qsb Pleistocene QUATERNARY Qes Sand sheet deposits (Holocene) Kwagunt Formation (Neoproterozoic) Zkw Walcott Member (Neoproterozoic) Qd Dune sand and sand sheet deposits (Holocene) Ti Miocene Zka Awatubi Member (Neoproterozoic) TERTIARY Qdl Linear dune deposits (Holocene) Zkcb Carbon Butte Member (Neoproterozoic) Qdp Parabolic dune deposits (Holocene) SEDIMENTARY ROCKS Galeros Formation (Neoproterozoic) Qdb Barchan dune deposits (Holocene) Zgd Duppa Member (Neoproterozoic) Km Upper CRETACEOUS Qdm Mixed dune deposits (Holocene) Kd Cretaceous Zgcc Carbon Canyon Member (Neoproterozoic) Qdlu Linear dune and sand sheet deposits (Holocene) Unconformity Zgj Jupiter Member (Neoproterozoic) San Je Qg1 Young terrace-gravel deposits (Holocene) Rafael Middle Jurassic Zgt Tanner Member (Neoproterozoic) Group Jc Qa1 Young alluvial fan deposits (Holocene) YZn Unconformity Nankoweap Formation, undivided (Neoproterozoic to latest Mesoproterozoic) Qg2 Intermediate terrace-gravel deposits (Holocene) Jn MESOPROTEROZOIC ROCKS Qa2 Intermediate alluvial fan deposits (Holocene) Jkn JURASSIC Unkar Group (Mesoproterozoic) Lower Jurassic Qps Glen Jk Ponded sediments (Holocene) Yc Cardenas Basalt (Mesoproterozoic) Canyon Group Jks Qg3 Old terrace-gravel deposits (Holocene) Dox Formation (Mesoproterozoic) Unconformity Qa3 Old alluvial fan deposits (Holocene) Ydo Ochoa Point Member (Mesoproterozoic) Jm Lower Jurassic Qae Mixed alluvium and eolian deposits (Holocene) Ydc Comanche Point Member (Mesoproterozoic) Unconformity Yds Solomon Temple Member (Mesoproterozoic) co Qv Valley-fill deposits (Holocene) cp Upper Triassic Qt Travertine deposits (Holocene and Pleistocene(?)) Yde Escalante Creek Member (Mesoproterozoic)

cs Qtr Talus and rockfall deposits (Holocene and Pleistocene(?)) Ys Shinumo Sandstone, undivided (Mesoproterozoic) TRIASSIC Unconformity Ql Landslide deposits (Holocene and Pleistocene) Yh Hakatai Shale, undivided (Mesoproterozoic) mhm Middle(?) and Lower Triassic QTg4 Older terrace-gravel deposits (Pleistocene and Pliocene(?)) Yb Bass Formation (Mesoproterozoic) ms Lower Triassic mw QTg5 Youngest old terrace-gravel deposits (Pleistocene and Pliocene(?)) PALEOPROTEROZOIC ROCKS Xg Granite (Paleoproterozoic) Unconformity QTg6 Intermediate old terrace-gravel deposits (Pleistocene and Pliocene(?)) Pkh Xgd Granodiorite-gabbro-diorite and granodiorite complexes (Paleoproterozoic) QTg7 Oldest old terrace-gravel deposits (Pleistocene and Pliocene(?)) Pkf Xv Vishnu Schist of Granite Gorge Metamorphic Suite (Paleoproterozoic) Tgs Gravel and sedimentary deposits (Pliocene(?) and Miocene(?)) Unconformity Xr Rama Schist and Gneiss of Granite Gorge Metamorphic Suite Ptw VOLCANIC ROCKS (Paleoproterozoic) Pt Ptb Qi Intrusive dikes of Shadow Mountain (Pleistocene) Xbr Brahma Schist of Granite Gorge Metamorphic Suite (Paleoproterozoic) Unconformity Cisuralian PERMIAN Qsp Pyroclastic deposits of Shadow Mountain (Pleistocene) Pc EXPLANATION OF MAP SYMBOLS Qsb Basalt flows of Shadow Mountain (Pleistocene) Unconformity Contact—Contacts between all alluvial and eolian units are approximate and Ti

Ph Intrusive dikes (Miocene) arbitrary 35 F Fault—Dashed where inferred or approximately located; dotted where concealed; Unconformity SEDIMENTARY ROCKS bar and ball on downthrown side. Showing fault offset in feet Pe Km Mancos Shale (Upper Cretaceous) Supai Fracture—Open fracture (1 to 12 ft wide) without offset Unconformity Group Upper Pennsylvanian, Kd Dakota Sandstone (Upper Cretaceous) Ms Moscovian, Bashkirien, PENNSYLVANIAN Folds—Showing trace of axial plane and direction of plunge and Serpukhovian San Rafael Group (Middle Jurassic) Unconformity F Anticline Je Entrada Sandstone-Cow Springs Sandstone, undivided (Middle Jurassic) Ms Serpukhovian MISSISSIPPIAN F ? Plunging anticline Jc Carmel Formation (Middle Jurassic) Mr Mississippian M Syncline Unconformity Glen Canyon Group (Lower Jurassic) Upper and Middle M ? Plunging syncline Dtb DEVONIAN Devonian Jn Navajo Sandstone (Lower Jurassic) Unconformity Monocline—Axis at approximate center of dipping limb Jkn Kayenta Formation-Navajo Sandstone transition zone (Lower Jurassic) m Dome Tonto Middle Cambrian Jk Kayenta Formation (Lower Jurassic) ba CAMBRIAN Group Strike and dip of beds t Middle and Jks Springdale Sandstone Member (Lower Jurassic) o Lower(?) Cambrian 35 Inclined—Showing dip measured in the field

Great Unconformity Jm Moenave Formation (Lower Jurassic) o Implied—Interpreted from aerial photographs; dip not determined Zs Chinle Formation (Upper Triassic) 112°00' 111°00' Strike of vertical and subvertical joints—Interpreted from aerial photographs; 36°30' Zkw co Owl Rock Member (Upper Triassic) K symbol placed where joints are most visible on aerial photographs Marble AIBIT Fault Fence F Preston Mesa Anticline Red Lake Monocline Zka Canyon Limestone Ridge cp Collapse structure—Black dot shows circular collapse structure characterized by Fault O PLAT Petrified Forest Member (Upper Triassic) Crooked Ridge aseM etihW Zkcb strata dipping inward toward a central point. Magenta dot shows circular Antic EAU cs reak Chuar Neoproterozoic Shinarump Member and sandstone and siltstone member, undivided collapse structure characterized by strata dipping inward toward a central B Zgd Shinumo Altar line Group (Upper Triassic) Echo point and brecciated rock Zgcc Moenkopi Formation (Middle(?) and Lower Triassic) HOUSEVALLEY ROCK Eminence Sinkhole Cedar Ridge MARB E Zgj mhm Holbrook and Moqui Members, undivided (Middle(?) and Lower Triassic) cho Wildcat Peak Volcanic vent White Point Fault C LE Cliffs o F l PLA Zgt ms Shnabkaib Member (Lower Triassic) o Boda a s e M n ots erP r way a TEAU Cinder pit d Mesa Unconformity o C mw Wupatki Member (Lower Triassic) East liffs Crooked Ridge Tuba City Syncline YZn Gravel pit The Gap ot Kaibab Formation (Cisuralian) D Unconformity tains Hopi Reservation boundary K aibab e Moon Yon Pkh Harrisburg Member (Cisuralian) Point Imperial Blu Yc nch Moun Hamblin Be Mo Ydo Pkf Fossil Mountain Member (Cisuralian) B noc KAIBAB PLATEAU utte White Point PROTEROZOIC line Unkar C R Middle Mesa huar Ydc Pt Toroweap Formation, undivided (Cisuralian) iv Group e r Mesoproterozoic 160 Yds Ptw Little Hidden Springs Woods Ranch Member (Cisuralian) Little Colorado NAVAJO NATION River Gorge Tuba Butte Yde GRAND Colorado

Sy Ptb Brady Canyon and Seligman Members, undivided (Cisuralian) Wash

ncline

F Ys ault Pc Coconino Sandstone (Cisuralian) Palisades Unconformity 89 Moenave WALHALLA Tuba City Wash sert Ph Blue Spring e Yh Hermit Formation (Cisuralian) PLATEAU Monoc

Moenkopi

e Monoclin Gold Hill River 160 Yb Supai Group (Cisuralian, Pennsylvanian, and Upper Mississippian) line CANYON Painted D HOPI Pe Esplanade Sandstone (Cisuralian) Moenkopi Blu RESERVATION Xg Shadow ms Cedar Mtn Monoc e Spring Wescogame (Upper Pennsylvanian), Manakacha (Moscovian), and Wata- 89 Coal Mountain Ward Mine Mesa Xgd homigi (Bashkirien and Serpukhovian) Formations, undivided line Collapse Terrace 64 Coconino Plateau 264 Xv Paleoproterozoic Ms Surprise Canyon Formation (Serpukhovian) Shadow Mountain MOENKOPI PLATEAU 36°00' Xr Mr Redwall Limestone, undivided (Mississippian) Index map showing physiographic, cultural, and geologic locations mentioned in the text; also shows approximate Xbr location of major geologic structures. Base derived from 30-m digital elevation model. Dtb Temple Butte Formation (Upper and Middle Devonian)

Any use of trade, product, or firm names in this publication is for descriptive purposes only and does not imply endorsement by the U.S. Government Geologic Map of the Tuba City 30’ x 60’ Quadrangle, Coconino County, Northern Arizona This map was printed on an electronic plotter directly from digital files. Dimensional calibration may vary between electronic plotters 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. By For sale by U.S. Geological Survey, Information Services, Box 25286, Federal Center, Denver, CO 80225, 1–888–ASK–USGS Digital files available at http://pubs.usgs.gov/sim/3227/ George H. Billingsley, Philip W. Stoffer, and Susan S. Priest Suggested Citation: Billingsley, G.H., Stoffer, P.W., and Priest, S.S., 2012, Geologic map of the Tuba City 30’ x 60’ quadrangle, Coconino County, northern Arizona: U.S. Geological Survey Scientific Investigations 2012 Map 3227, pamphlet 31 p., 3 sheets, scale 1:50,000 (http://pubs.usgs.gov/sim/3227/).