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Texas SW Quadrant.Eps U.S. DEPARTMENT OF THE INTERIOR Prepared in cooperation with the DATA SERIES 170 U.S. GEOLOGICAL SURVEY TEXAS BUREAU OF ECONOMIC GEOLOGY PLATE 3 Version 1.1 106° 105° 104° 103° 102° 101° 100° ° Kbm Pa Osh Ein 30 Kbm Pa Osh Qao Ei Qao Ocm QTb Kyu Qls Kwfr Ppc Kcx Ein Ocm Kbd Kt MDc Kyu Osh Oj Kt Qf OEd Oၤ Qao QT Qf Qf Kbd Ked ၧci Kpr ၧ Qao ၧd ၧ Kse Kbu Oi OEd h Mt Kse Omr Kfr ၧd Qao Kse Kbo Pci MDc Qao Kbo Qal Kbo Kau Qal Kbd Ocm Qf ၧMt Qf Kpt Qao 30° Pa Qf Opf Kt Opf OEd ၧh Kbo Kbo QTb Oj Kbd Kt Kbd Kbd Kau Kbu Qf Ein Qf OEg Qao Kpt Kbu Qao Ti Qf O Qf Kbo Ked Ked Pr Kbo Qal Oi Kbo Qf MDc Ked Pr Kpr Osh Qao Qao Kt Kbo Qu QTb Kau QTu Qal Kwfr Kpt Kse QTu Kt Qf Kbd Qao OEd Pmg Ksh OEg Kt Kdv Omr Qf Qao Ksh Ocm OEg ၧMt Kpr Qf Oi Qf Kbo Kbd Kdm Oi Qao Qal Qf Kau Kbu Kdv Kbu Oi Qao Qf Kse Qal Opf Kbd Ked Qf Qf OEg Qf Kse Kdv Kbo Qt Qf Qf Kbo Qu Ksu Ksu Ti Kwfr Kt Kbd Kbu Ked Qsu Kbd Kt Kpt Kbd Opf Ti Ked Qao Kwfr Kbo Kpt Kbo Kbu Kef -M-b Qao Kbu Kau Kgr Opf Kag Qao Kdv Kdv Kbd Qal QTb Kse ၧ Kp Mt Kau Kbo Kbo QTb Kpt Kse Qu Kgr Kdr Qal OEg Kdv Kbd Kbu Kdv -M-i Qls Oi Qf Ei Kbo Kt Qal Kpt Kbu Kgr Or Ocm Ksa Ksa Qao Qao Kbd Kgr Kbd Qu Ksa Kag Qf -M-b Kpt Qal Qsu Qf QTb Qf Qal Kag Kbo Qu Kgr Kp Kef Qt OEg Kwfr Qls Kbd Qu Qal Qao Kp Kbd Qal Kgr Opf Opf Opf Kwfr Ti Kp Kbo Qt Qal Qls Or Kag Kbd Qao Kwn Ei Kag Kse Qu QTu Kag Kbo Kbo Ksa Md Kt Qf Kbd Ei Kbo Ei Ti Qf Kdr Qp Qt Kmk Oi Kpt Ei Ei QTu Qu Kwn Kag Qls O Oၤ Kbd Ei Qao Kag Kbd Oi Ei Kt Kse Qt Kdr Qal Oi Ei Ehh Kdr Kdr Qal Kmk Kgr Ev Ksa Ocm MDo Qf Ev Kbd Kbu ၤ ၧd Kse Or O c Kp Kbo Qu Kdr Qal Kgr EXPLANATION Qao Oၤc Kbu QTb -M-b Qf PAbp Ksa Qf Md ၧMt Mb Kst PAKj Qao Ksu Kef Qf Kp Kpt Kwn Osa Kag Ei Kag Kbu Kbd Ti Kdr Kbu PROVINCE NO. 2 PROVINCE NO. 1 Ti Qf Kst Qao Qu Kdr Qu TRANS-PECOS TEXAS AND EAST BANK OF PECOS RIVER NORTH AND CENTRAL TEXAS INCLUDING PANHANDLE Opf Ei Kp QTb QTu Qu Kmk Qu Ehh Ksa Qt Kbo PAKj Qf Qf Ev Kag Qt PRESIDIO COUNTY EXCLUSIVE OF PRESIDIO COUNTY Kbo Kp Qu Osa ၤ Ei Ti Qt Kpt QTu Kbu Qal Kbu Ki O c Qao Kbo Kdr Kdr Pobo Qt Ki Md Osc Oၤc Oၤc Ksa Pd Kbd Kag Pobo Qu Qal Kmk Kp Os Kef Qao Qf Kse Kef Kau Qal Kp Qf Ksu Pof Qf Qal Oi Qt Kdr Dewey Lake Redbeds P Oi Oၤc Os PAKj Qao Qao Qal Kbu Kbu Os Kef Permian rocks, undivided Qf Ki Pru Kbo Kag Ki Kag Qf Ti Kpt Prc Pts Oၤc Os PAKj Kef Kef Kse Qls Psc Kbd QTb Kau Kau Qu Oၤc Kse Qt Ochoa Series PAbp Kag Kbd Qal Qao Rustler (Pru), and Salado and Castile Formations, undivided (Psc); gypsum Qf Oi Kbo of Rustler, Salado and Castile Formations, undivided (Prc); and Tessey PAKj Oi Limestone (Pts) Kag Kp Kuc Qf PROVINCE NO. 6 Kuc Kac Ki Qls PROVINCE NO. 5 Qle Pt NORTH, CENTRAL, AND SOUTH TEXAS INCLUDING QUATERNARY 29° Qf Pobo Qal Pq FOR ALL OF WEST TEXAS EAST TEXAS AND GULF COAST TO RIO GRANDE QTu Pbc Kbo Qu Pcb Py Md Pc Kbd Kes Pcl Pqw Oၤc Fs Qle Kag Kol Pmg Pbb Pwh PAKj Ksm Kes Psr PAKj Qu Pcc Pwb Qao Kp Fill and spoil Qls Kau Mina Grande Formation Pgs Pm Qal EPAin Pw Pb Kse EPAin Kol ° Pbr Qs Qds Qsd Qsu Qs Qds Qsd Qsi Qcd 29 Quartermaster (Pq) and Cloud Chief (Pcl) Formations; Whitehorse Group, undivided (Pwh); Quartermaster Formation and Whitehorse Group, Qle Bell Canyon (Pbc), Cherry Canyon (Pcc), and Brushy Canyon (Pbr), Sand sheet (Qs); dune sand sheet (Qds); sand dune (Qsd); and Sand sheet (Qs); dune sand sheet (Qds); sand dune (Qsd); undivided (Pqw); Blaine Formation (Pb); and Whitehorse Group and Qal Qal Formations; Bell Canyon, Cherry Canyon, and Brushy Canyon sand deposits, undivided (Qsu) silty sheet (Qsi); and clay dune (Qcd) Kuc Ec Blaine Formation, undivided (Pwb) Qt Formations, undivided (Pbb); Carlsbad Group (Pcb); Capitan (Pc), Tansill (Pt), Guadalupe Series Yates (Py), Seven Rivers (Psr), Goat Seep (Pgs), Munn (Pm), and Word (Pw) Formations Psa Qal Qaf Qal Qac Qas Qbr Kuc Holocene Alluvium (Qal), subdivided in Rio Grande delta into areas predominantly Qal Ksm Eb San Angelo Formation Alluvium (Qal); and alkali flat deposits (Qaf) Ksm Kes clay (Qac), and areas predominantly sand (Qas); and beach-ridge and Qle Pr barrier-flat sand deposits (Qbr) Ppc EPAin Kol PAk Pci Pco Pcf Qt Qf Qc Qgy Qls Qb Qp Qu Qt Qd Qd? Ksm Ec Pbg Pvc Pcm Pwi Terrace (Qt), alluvial fan (Qf), caliche (Qc), gypsite (Qgy), land slide (Qls), Ross Mine (Pr), Cibolo (Pci), Pbs Clear Fork Group Terrace deposits (Qt); and Deweyville Formation (Qd), with higher level, (Qd?) and Pinto Canyon (Ppc) Formations bolson (Qb), and playa (Qp) deposits; and Quaternary deposits, undivided (Qu) PROVINCE NO. 2 Eb Briggs (Pbg), Victorio Peak (Pvc), Cutoff (Pco), Bone Spring (Pbs), Qt Pleistocene TERTIARY IGNEOUS AND VOLCANICLASTIC ROCKS, TRANS-PECOS TEXAS Holocene & Cathedral Mountain (Pcm), and Wilkie Ranch (Pwi) Formations Plu 1 23456789 Qbc Qbs Qbv Qbb Qle Qo Qse Qli Qg Qtl Qbd Qta Qdl Qtu Kes PERMIAN Qal Pta QTu Qt Pwr Beaumont Formation subdivided into areas predominantly clay, (Qbc), QUATERNARY Qun Qao Qhg Pgc areas predominantly sand (Qbs), in the Rio Grande delta area clay veneer Qal 20 over meanderbelt sand (Qbv), and barrier island deposits (Qbb) Qt Qu Kes Pbe -M-i Leona Formation (Qle); Onion Creek Marl (Qo); Seymour (Qse), *Lingos (Qli), and Ec Gatuna (Qg) Formations; Toy Limestone (Qtl); Blackwater Draw (Qbd), Tahoka (Qta), Ql Double Lakes (Qdl), and Tule (Qtu) Formations; pond (Qun), older alluvial (Qao), Qu Lueders (Plu), Talpa (Pta), Grape Creek (Pgc), Miocene -M-b and high gravel (Qhg) deposits Bead Mountain (Pbe), and Waggoner Ranch (Pwr) Formations Lissie Formation Qu Leonard Series -M-d Pleistocene QTb QT QTu Psh Pjv EPAin 25 Qhg Kes Pp PAk -M-O Quaternary–Tertiary bolson deposits (QTb); Quaternary–Tertiary deposits, Qt Skinner Ranch and Hess Formations, undivided Pec Or undivided (QT); and Uvalde Gravel (QTu) High gravel deposits Ti Jagger Bend and Valera Formations, undivided (Pjv); Elm Creek (Pec), and Petrolia (Pp) Formations Qu Osa PobPorPou Pow Opf 30 Ph Pad Oi Blanco (Pob) and Rita Blanca (Por) Formations; Willis Formation Osc Oj Paj Oj and unnamed Pliocene deposits (Pou) Qt Hueco Limestone Pcj Pliocene Pn Oligocene Qal Os Kes Psb Ocm Omr PoMo OEd Ogallala Formation Ec Pss Pse Osh 35 Og Psm Pac TERTIARY Od Eb Pmo Oe OEv Ode QTu -M-g -M-g PAk Evh Ewm Ein Ed Pa Pin Admiral (Pad) and Coleman Junction (Pcj) Formations; Admiral and Goliad Formation Goliad Formation Coleman Junction Formations, undivided (Paj); Santa Anna Branch Shale OEc Alta Formation Lenox Hills and Neal Ranch Formations, undivided and Sedwick and Moran Formations, undivided (Pss); Santa Anna Branch EPAin Wolfcamp Series Shale (Psb); Nocona (Pn), Sedwick (Pse), and Moran (Pmo) Formations; 40 Ev -M-f QTu Sedwick and Moran Formations, undivided (Psm); and OEg -M-fo -M-fo Archer City Formation (Pac) Qt -M-o 28° Qal Ppu Fleming Formation and Oakville Sandstone, undivided Fleming Formation and Oakville Sandstone, undivided (Mfo); Ec Ti Ei Fleming Formation (Mf); and Oakville Sandstone (Mo) Pၧm Pၧh Pၧma Eocene Eb 45 Oc Magdalena Formation ၧtg Ocf Oc ၧci Of Qt Pueblo (Ppu), Harpersville (Pၧh), Thrifty and Graham Formations, Catahoula Formation Cieneguita Formation undivided (ၧtg), and Markley (Pၧma) Formations Catahoula Formation and Frio Clay, undivided (Ocf), 28° Virgil Series Catahoula Formation (Oc); and Frio Clay (Of) ၧhc 50 OEw On OEw ၧ r Shitsett (OEw) and Nash Creek (On) Formations 1. Tertiary intrusive rocks, undivided (Ti); Quitman Mountains caldera 6. Delaho Formation and unit 9 of Rawls Formation (-M-d); Bofecillos Em ၧrp ၧcn volcanic rocks, and volcanic rocks of Sneed (Cox) Mountain and west volcano volcanic rocks, including units 1–8 of Rawls Formation and OEj of Victoria Peak, (Oq); Eagle Mountains caldera volcanic rocks (Oe); lava flows in upper part of Fresno Formation (Or); Santana Tuff from Ejl Ewb Em and Van Horn Mountains caldera volcanic rocks (Evh) Sierra Rica caldera in Mexico (Osa); San Carlos Tuff from San Carlos ၧw ၧv Eya caldera in Mexico (Osc); South Rim Formation from Pine Canyon Eca 2. Miocene intrusive rocks (-M-i); Oligocene intrusive rocks (Oi); Wiley caldera (Os); Chisos Formation of Schiebout et al. (1987) and the Big Ewb ၧwm ၧca Mountains caldera volcan rocks (Ewm); and Eocene intrusive rocks Yellow Sandstone Member of their Tornillo Formation, undivided Missouri Series (Ei) (Oec); and Eocene volcanic rocks (Ev) Jackson Group, Undivided (OEj); Whitsett Formation (OEw); Manning, Manning (Em), Wellborn (Ewb), and Yazoo (Eya) Formations ၧpp ၧjc ၧcr Wellborn, and Caddell Formations, undivided (Ejl); Manning (Em), Wellborn (Ewb), ၧpm 3.
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