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Geologic units in Coke county, Texas

Blaine Formation (Phanerozoic | Paleozoic | Permian [Guadalupe]) at surface, covers 4 % of this area
Blaine Formation
Lithology: mudstone; evaporite; dolostone (dolomite); sandstone
Antlers Sand (Phanerozoic | Mesozoic | Cretaceous-Early) at surface, covers 9 % of this area
Antlers Sand
Lithology: sand; clay or mud; conglomerate; sandstone; claystone
Dockum Group, undivided (Phanerozoic | Mesozoic | Triassic-Late) at surface, covers 1 % of this area
Dockum Group
Lithology: fine-grained mixed clastic; limestone; conglomerate
alluvium (Phanerozoic | Cenozoic | Quaternary | Holocene) at surface, covers 2 % of this area
alluvium
Lithology: sand; silt; clay or mud; gravel
Clear Fork Group (Phanerozoic | Paleozoic | Permian [Leonard]) at surface, covers 5 % of this area
Clear Fork Group
Lithology: mudstone; sandstone; dolostone (dolomite); siltstone; evaporite
Lingos Formation (Phanerozoic | Cenozoic | Quaternary | Pleistocene-Middle(?) Pleistocene-Late(?) Holocene) at surface, covers 6 % of this area
Lingos Formation
Lithology: sand; gravel; clay or mud; silt
Ogallala Formation (Phanerozoic | Cenozoic | Tertiary | Pliocene Miocene) at surface, covers 0.2 % of this area
Ogallala Formation
Lithology: sand; silt; clay or mud; gravel; carbonate
Quartermaster Formation (Phanerozoic | Paleozoic | Permian [Guadalupe]) at surface, covers 4 % of this area
Quartermaster Formation
Lithology: shale; sandstone; evaporite; dolostone (dolomite)
sand sheet deposits (Phanerozoic | Cenozoic | Quaternary | Holocene) at surface, covers 1 % of this area
sand sheet deposits
Lithology: sand; silt
San Angelo Formation (Phanerozoic | Paleozoic | Permian [Guadalupe]) at surface, covers 11 % of this area
San Angelo Formation
Lithology: mudstone; siltstone; evaporite
Whitehorse Group and Blaine Formation, undivided (Phanerozoic | Paleozoic | Permian [Guadalupe]) at surface, covers 2 % of this area
Whitehorse Group and Blaine Formation, undivided
Lithology: sandstone; shale; evaporite; conglomerate
Quaternary deposit, undivided (Phanerozoic | Cenozoic | Quaternary) at surface, covers 9 % of this area
sand, silt, clay, and gravel. locally indurated with calcium carbonate (caliche); includes point bar, natural levee, stream channel, sand dune, terrace, alluvial fan, landslide bolson and playa deposits
Lithology: sand ; silt ; clay or mud; gravel; carbonate
Edwards Limestone (Phanerozoic | Mesozoic | Cretaceous-Early) at surface, covers 23 % of this area
Edwards Limestone
Lithology: limestone; dolostone (dolomite); chert
Terrace deposits (Phanerozoic | Cenozoic | Quaternary | Pleistocene Holocene) at surface, covers 2 % of this area
Terrace deposits
Lithology: terrace; sand; gravel; silt; clay or mud
Seymour Formation (Phanerozoic | Cenozoic | Quaternary | Pleistocene-Middle [Irvingtonian]) at surface, covers 0.2 % of this area
Seymour Formation
Lithology: sand; gravel; clay or mud
Whitehorse Group, undivided (Phanerozoic | Paleozoic | Permian [Guadalupe]) at surface, covers 17 % of this area
Whitehorse Group, undivided
Lithology: sandstone; shale; evaporite

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