145.5 175.6 359.2 318.1 542.0 513.0 228.0 251.0 199.6 501.0 416.0 299.0 99.6 65.5 33.9 23.0 16.0 28.4 1 1.8 1.6 5.3 Ma System proterozoic Paleo- Cambrian Devonian Mississippian Pennsylvanian Permian Triassic Jurassic Cretaceous Tertiary Quaternary Series Stage Lower Oligocene Miocene Pliocene Holocene and Lower Middle Upper Upper Lower Upper Lower to Upper Lower Lower Upper Lower Middle Upper Paleocene and Eocene and lower upper lower middle upper lower and upper Pleistocene Formation Formation Formation Quichapa Formation Formation Formation Formation Formation Formation T Formation Moenkopi Gravity slidebreccia Moenave Muddy PeakDolomite V enclosing sedimentary Rocks ofParadise Kayenta Springs oroweap Chainman Shale,undivided T Carmel Claron Scotty Kaibab Group olcanic rocksofComanche Needles RangeGroup T Chinle Bright AngelShale emple Navajo Sandstone basaltic lavaflows tectonic breccia(?) Limestone Sedimentary Rocksof apeats Sandstone Cedar MountainFm. Iron Cap Surficial deposits anddacitelava Limestone old bouldergraveldeposits Nopah Dolomite Grapevine Callville and dacitelava Dolomite Kane Ox gneiss, schist, young rhyolite middle rhyolite sedimentary Pine Racer Canyon Redwall Bonanza King Pakoon Queantoweap Formation Isom Fm.and Rencher Basin-fill Map Unit Formation Sandstone pegmatite Page Ranch W Formation Latite rocks Canyon V flows ash Quartziteand rocks alley W flows V and T alley ash u T Harrisburg Mbr T Paria RiverM Springdale Ss.Mbr Brady CanyonMbr Harmony Leach Canyon Whitmore Pointand Sinawava M Shinarump Cgl.Mbr Rock CanyonCgl.Mbr White ThroneMb V Mountain Mbr Winsor Mb Forest Mb Crystal Creek impoweap M Ranch Mbr Shnabkaib f Dakota Fm middle red Dinosaur Canyon Seligman Mbr Canyon upper part ropic Shale, Muddy Condor Co-op Creek upper red Mbrs, undivided Creek f irgin Ls.Mb lower red undivided Member Petrified member member member Formation Canaan Peak member member Hills Limestone Fm. Fm. Straight T Utah DepartmentofNaturalResou a divisionof U W T W Member Member T Lamb Point upper Fossil lower u u Canyon T T u and T oods f Cliffs Fm. ash ongue f enney f f Fm. f f AH GEOLOGICA Canyon upper T unit Mbr Monte Cristo ibbet Bird Spring Fm. T r ong. Limestone (west of b b r b . r . r r r r . Beaver Dam Wash) (west of Beaver Dam Wash) . andesitic lava flows, undivided basaltic lava flows, undivided ^mt ^mr V Mr Ptb Pts Symbol ^mm Q, QT Tcu ^mu Tmcb ^mv ^ms Tcl Jk arious ^ml Tgb Jcw Ksu Jcx Tpv Trdy Pkh Tmc _bk Jcp Ptw Pkf Tcv Kdt Tpa Tqh Kst Tqc *c Dm Pp Tre Jcc Tql Trdm _n Tw Ts Map Tkw Ti Kcm Tpr TKg J^m _ba Ktm Msc Tag ^cp Jtw ^cs Tr To Jks Pq Jts Xu _t Jn Jnl TKcp Mm Tc Ptbs ^mtr Jkt ^m Tiw Qb Tb Ta Pk Tq Jc Pt M_u P*bs Ki L 160 1 1500 1800- 1400 1400- 0-100 90-1 30-2 50-180 1000 130 2600 Thickness 200 0-13 0-25 0-16 0-320 0-33 130 4000 400- 300- 350- 200- 250- 2300 1500 2000 0-200 5-250 16 285- 440- 400- 200- 550- 16 25 20 33 550 600 350 50 50 60 160- 200- 60 870 300 250 680 650 390 580 <10- fee 250 300 350 65- 100 400 3 50 30 SU 0- 0- 0- 240-450 0-60 120 850 >320 1090 520 0 500 615-850 0 1500-2000 600-850 0 0 0 0 0- 0 0 0 0 t 5 0 0 0 0 0 0 0 0 0 0 0 140-315 1500+ 3000-4000 R 1200 2000 3000+ meters 1000 300-1600 120- 105- 0-100 120- 550- 400 600 15-55 27-45 335 450 300 400 0-30 0-75 0-50 425- 135- 500 1 200 180 177 100 400 165- 0-98 0-40 180 2-75 700 100 265 170 180 800 150 150 0-60 9-60 120 1 600 207 87- 75- 48- 60- 460 20- 90- 60- <3- 60- 50 15 10 60 50 75 75 VEY 75 90 0- 90 0- 0- 10 15 9 0-18 75-135 460-600 35 330 160 150 188-260 180-260 260 >100 0- 450+ 43-95 900+ 300 600 at westedgeof 900-1220 90-490 proximal distal Development of islandarc Plate Mojave Province r Ordovician and Silurian strata removed by Near western margin of Pangea sup rcontinent flat continental e America Broad, nearly Backbulge basin Foredeep basin Development of intermontaine basins (Paleocene-Eocene) and uplift of western U.S. (Eocene-Oligocene); uplift continues to present day ces North Part ofthe erosion associated with the Antler orogeny very low-relief continental shelf Setting interior Explosive, calc-alkaline volcanism and caldera development T ectonic Slowly subsiding shallow-marine basin at western margin of North American craton; Utah hingeline, a long-lived boundary between subsiding Upper Jurassic-Lower Cretaceous forebulge Bimodal volcanism, onset of basin-range extension STR marine basin to west and stable continental shelf to east, controls sedimentation high (60 m.y. gap in rock record) thrust faulting and collapse of western-margin of Colorado Plateau Dominant stream flow Hurricane fault A Sevier orogeny TIGRAPHIC COLUMN to northwest caldera complex Draw calderaof marine tongue westward-thinning T of coastalplain; enviroments estuarine lagoonal, floodplain, river shallow marine&sabkha laccolith, triggered Pinto Peak restricted shallowmarine Bull Mountains caldera? Caliente Caliente ropic is Stoddard Mtn. by rapidlaccolith V caldera and consequent intrusion river andalluvialplain fault-bounded basins sediments modified dominates SWUtah. caldera coastal sabkhaand T with ColoradoRiver alluvial fan to west,buterosion Bull Indian irgin Riverintegrated emplacement alluvial fan west coasttropical distal riv Peak Caliente derived from erosion dominant W elegraph desert; basalpart river and Kane Springs Mineral Mtn. metamorphic and intrusion slides(Tgb) large gravity by soilformation coastal dunefield Pine intrusion rive coastal sabkha braided stream coastal sabkhaand vast eoliandune floodplain, lake, shallow marine shallow marine shallow marine eruption of sandy mudflat Environment shallow marine shallow marine, shallow marine Depositional eolian dunefield distal riverand V beach, coastal shallow marine river andlake braided river igneous rocks tidal flatand ash caldera intrusion intertidal and and sabkha river channel alley minor lake field ofarid floodplain V nearshore dune field alluvial-fan is sabkha r tidal flat tidal flat tidal flat deposits tidal flat , lake,and shallow alley stream river and marine V playa tidal flat alley e r , playa, , shoreface sources of ash-flow tuffs sources of ash-flow tuffs fault breccia Volcanic highlands and intermontaine basins conglomerate, sandstone sandstone andconglomerate limestone andmudstone ash-flow tu limestone andmudstone sandstone andsiltstone mudstone andsiltstone siltstone andmudstone mudstone andsiltstone gypsum andlimestone limestone, gypsiferous pebble conglomerate sandstone andshale mudstone, siltstone, limestone, siltstone, gypsum, limestone siltstone, sandstone, siltstone, sandstone, sandstone, siltstone, siltstone, sandstone, gypsum, mudstone, claystone, mudstone, sandstone, siltstone, mudstone, siltstone, cherty limestone orthoquartzite and micritic limestone minor limestone basaltic lavaflows lesser siltstone, sandstone, and sand andgravel, limestone, and siltstone, and shale, siltstone, mudstone and limestone with conglomerate dolomite and dolomite, with dolomite with gneiss, schist, silty limestone and mudstone and mudstone and mudstone and gypsum lava flowsand ash-flow tu conglomerate conglomerate conglomerate, conglomerate in lowerpart mudstone, and siltstone sandstone lava flows sandstone lava flows sandstone ash-flow tu sandstone sandstone lava flows sandstone sandstone tu sandstone sandstone limestone sandstone sandstone pegmatite limestone sandstone ash-flow sandstone and limestone dolomite gypsum gypsum mudstone dolomite sandstone ash-flow ash-flow ash-flow breccia siltstone f Dominant Rock faceous and tu tu tu tu f f &lavaflows f f W f f f fs f f eathering Profile f f, f f T ype banded lightanddarkgray large landslides intruded here Pine unconformity equivalent? Chisholm Shale TKcp hasJurassicvolcanicclasts TKg lacksvolcanicclasts fault zone “bacon-striped” ledgyslopes below Square unconformity gastropods, coal equivalent ? Dunderberg Shale unconformity P-0 unconformity Thunder SpringsMbr P-tw unconformity about 1.7billionyearsold Mountains Msc absentinBeaverDam 18.7 Ma 14.45 Ma “stair-step” topography 14.0 Ma on KolobPlateau(derivedfrom Large quartzmonzoniteboulders 2 to8.5Ma 40 21.46 Mato22.01 west ofZionN.P sandstone ledge,pinchesout Isocrinus alabaster gypsum gypsum 1.2 billionyeargap Great Unconformity 23.8 Ma 22.8 MamostlyBauersT 22.03 Ma K unconformity unconformity fish fossils lumped units.Unconformitiesnotshownfor andesiti as age Stacking 21.62 Mato21.97 20.4 Ma J-1 unconformity J-2 unconformity? prominent cl “black-banded” cli brachiopods gypsum numerous landslides mining district prominent cli unconformity unconformity 30 Ma 26 to27Ma 21.78 Ma Ar/ planar bedded transition zone locally prominentjoints large, sweepingcross-beds inZionN.P sandstone ledgepinchesoutwestward T P-k unconformity 5 limestoneledgestowest 3 limestoneledgestoeast R V T “J-0” unconformity J-sub Kayentaunconformity R -1 unconformity alley laccolith 39 shown. -3 unconformity Ar ages overla c W sp. order flows, ah p T i and f f Litholog Notes op Mtn.thrust f f; SilverReef W . ah SpringsFm. of age intrusions f f T . ertiary y uncertainty; 169 to170Ma not u , units show f f Mb Muddy T ipv) r n is (21.86 Ma) _u P*pc ^cPk J^km . not Tid for approximat ^u additional lumpedunits Pkt The Dairy intrusion Creek all T ^mPt J^mc Intrusive unitsand (21.98 Ma) (20.5 Ma) ertiary ^mPk Tqcw Tib units Tipv Tim KJu T Pkq Bull Valley intrusion Formation, ertiary units. Pine Valley laccolith are (22.02 Ma) Mineral Mountain intrusion e basalti Tqcl Tih becaus (12.1 Ma) Hardscrabble Hollow intrusion in (22.00 Ma) contact Tqci Tibm c e and Big Mountain intrusion and Tgb (units included) of .