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Geologic units in Runnels county, Texas

Quaternary deposit, undivided (Phanerozoic | Cenozoic | Quaternary) at surface, covers 30 % 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

Clear Fork Group (Phanerozoic | Paleozoic | Permian [Leonard]) at surface, covers 25 % of this area

Clear Fork Group

Lueders Formation (Phanerozoic | Paleozoic | Permian [Leonard]) at surface, covers 10 % of this area

Lueders Formation

Lithology: shale; limestone

Seymour Formation (Phanerozoic | Cenozoic | Quaternary | Pleistocene-Middle [Irvingtonian]) at surface, covers 8 % of this area

Seymour Formation

Lithology: sand; gravel; clay or mud

alluvium (Phanerozoic | Cenozoic | Quaternary | Holocene) at surface, covers 8 % of this area

alluvium

Lithology: sand; silt; clay or mud; gravel

Talpa Formation (Phanerozoic | Paleozoic | Permian [Leonard]) at surface, covers 7 % of this area

Talpa Formation

Lithology: shale; limestone

Terrace deposits (Phanerozoic | Cenozoic | Quaternary | Pleistocene Holocene) at surface, covers 5 % of this area

Terrace deposits

Grape Creek Formation (Phanerozoic | Paleozoic | Permian [Leonard]) at surface, covers 3 % of this area

Grape Creek Formation

Lithology: shale; limestone

Bead Mountain Formation (Phanerozoic | Paleozoic | Permian [Leonard]) at surface, covers 0.8 % of this area

Bead Mountain Formation

Lithology: shale; limestone

Edwards Limestone (Phanerozoic | Mesozoic | Cretaceous-Early) at surface, covers 0.8 % of this area

Edwards Limestone

Antlers Sand (Phanerozoic | Mesozoic | Cretaceous-Early) at surface, covers 0.4 % of this area

Antlers Sand

sand sheet deposits (Phanerozoic | Cenozoic | Quaternary | Holocene) at surface, covers 0.3 % of this area

sand sheet deposits

Lithology: sand; silt

Lingos Formation (Phanerozoic | Cenozoic | Quaternary | Pleistocene-Middle(?) Pleistocene-Late(?) Holocene) at surface, covers 0.3 % of this area

Lingos Formation

Lithology: sand; gravel; clay or mud; silt

high gravel deposits (Phanerozoic | Cenozoic | Quaternary | Pleistocene) at surface, covers 0.2 % of this area

high gravel deposits

Lithology: gravel; silt; sand

San Angelo Formation (Phanerozoic | Paleozoic | Permian [Guadalupe]) at surface, covers < 0.1 % of this area

San Angelo Formation

playa deposits (Phanerozoic | Cenozoic | Quaternary | Pleistocene Holocene) at surface, covers < 0.1 % of this area

playa deposits

Lithology: clay or mud; silt