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Geologic units in Stonewall county, Texas

sand sheet deposits (Phanerozoic | Cenozoic | Quaternary | Holocene) at surface, covers 58 % of this area

sand sheet deposits

Lithology: sand; silt

Terrace deposits (Phanerozoic | Cenozoic | Quaternary | Pleistocene Holocene) at surface, covers 13 % of this area

Terrace deposits

alluvium (Phanerozoic | Cenozoic | Quaternary | Holocene) at surface, covers 11 % of this area

alluvium

Lithology: sand; silt; clay or mud; gravel

Lingos Formation (Phanerozoic | Cenozoic | Quaternary | Pleistocene-Middle(?) Pleistocene-Late(?) Holocene) at surface, covers 10 % of this area

Lingos Formation

Lithology: sand; gravel; clay or mud; silt

Clear Fork Group (Phanerozoic | Paleozoic | Permian [Leonard]) at surface, covers 5 % of this area

Clear Fork Group

Blaine Formation (Phanerozoic | Paleozoic | Permian [Guadalupe]) at surface, covers 1 % of this area

Blaine Formation

Whitehorse Group, undivided (Phanerozoic | Paleozoic | Permian [Guadalupe]) at surface, covers 0.9 % of this area

Whitehorse Group, undivided

Lithology: sandstone; shale; evaporite

Quartermaster Formation (Phanerozoic | Paleozoic | Permian [Guadalupe]) at surface, covers 0.4 % of this area

Quartermaster Formation

Dockum Group, undivided (Phanerozoic | Mesozoic | Triassic-Late) at surface, covers 0.2 % of this area

Dockum Group

San Angelo Formation (Phanerozoic | Paleozoic | Permian [Guadalupe]) at surface, covers 0.2 % of this area

San Angelo Formation

Comanche Peak Limestone, Walnut Clay, and Antlers Sand, undivided (Phanerozoic | Mesozoic | Cretaceous-Early) at surface, covers < 0.1 % of this area

Comanche Peak Limestone, Walnut Clay, and Antlers Sand, undivided