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Geologic units in Haskell county, Texas

Bead Mountain Formation (Phanerozoic | Paleozoic | Permian [Leonard]) at surface, covers < 0.1 % of this area
Bead Mountain Formation
Lithology: shale; limestone
Seymour Formation (Phanerozoic | Cenozoic | Quaternary | Pleistocene-Middle [Irvingtonian]) at surface, covers 14 % of this area
Seymour Formation
Lithology: sand; gravel; clay or mud
Terrace deposits (Phanerozoic | Cenozoic | Quaternary | Pleistocene Holocene) at surface, covers 1 % of this area
Terrace deposits
Lithology: terrace; sand; gravel; silt; clay or mud
Quaternary deposit, undivided (Phanerozoic | Cenozoic | Quaternary) at surface, covers 11 % 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
San Angelo Formation (Phanerozoic | Paleozoic | Permian [Guadalupe]) at surface, covers 0.1 % of this area
San Angelo Formation
Lithology: mudstone; siltstone; evaporite
playa deposits (Phanerozoic | Cenozoic | Quaternary | Pleistocene Holocene) at surface, covers 0.3 % of this area
playa deposits
Lithology: clay or mud; silt
sand sheet deposits (Phanerozoic | Cenozoic | Quaternary | Holocene) at surface, covers 10 % of this area
sand sheet deposits
Lithology: sand; silt
Grape Creek Formation (Phanerozoic | Paleozoic | Permian [Leonard]) at surface, covers 0.2 % of this area
Grape Creek Formation
Lithology: shale; limestone
dune sand sheet deposits (Phanerozoic | Cenozoic | Quaternary | Holocene) at surface, covers 9 % of this area
dune sand sheet deposits
Lithology: sand; silt
alluvium (Phanerozoic | Cenozoic | Quaternary | Holocene) at surface, covers 4 % of this area
alluvium
Lithology: sand; silt; clay or mud; gravel
Clear Fork Group (Phanerozoic | Paleozoic | Permian [Leonard]) at surface, covers 43 % of this area
Clear Fork Group
Lithology: mudstone; sandstone; dolostone (dolomite); siltstone; evaporite
Lueders Formation (Phanerozoic | Paleozoic | Permian [Leonard]) at surface, covers 5 % of this area
Lueders Formation
Lithology: shale; limestone
Talpa Formation (Phanerozoic | Paleozoic | Permian [Leonard]) at surface, covers 1.0 % of this area
Talpa Formation
Lithology: shale; limestone

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Page Last modified: 10:03 on 08-May-2012