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Mineral Resources > Online Spatial Data > Geology > by state > Texas Geology

Geologic units in Foard county, Texas

Terrace deposits (Phanerozoic | Cenozoic | Quaternary | Pleistocene Holocene) at surface, covers 1 % of this area

Terrace deposits

Lithology: terrace; sand; gravel; silt; clay or mud

Seymour Formation (Phanerozoic | Cenozoic | Quaternary | Pleistocene-Middle [Irvingtonian]) at surface, covers 10 % of this area

Seymour Formation

Lithology: sand; gravel; clay or mud

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

playa deposits

Lithology: clay or mud; silt

San Angelo Formation (Phanerozoic | Paleozoic | Permian [Guadalupe]) at surface, covers 11 % of this area

San Angelo Formation

Lithology: mudstone; siltstone; evaporite

sand sheet deposits (Phanerozoic | Cenozoic | Quaternary | Holocene) at surface, covers 3 % of this area

sand sheet deposits

Lithology: sand; silt

Quaternary deposit, undivided (Phanerozoic | Cenozoic | Quaternary) at surface, covers 10 % 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

alluvium (Phanerozoic | Cenozoic | Quaternary | Holocene) at surface, covers 3 % of this area

alluvium

Lithology: sand; silt; clay or mud; gravel

dune sand sheet deposits (Phanerozoic | Cenozoic | Quaternary | Holocene) at surface, covers 2 % of this area

dune sand sheet deposits

Lithology: sand; silt

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

Clear Fork Group

Lithology: mudstone; sandstone; dolostone (dolomite); siltstone; evaporite

Blaine Formation (Phanerozoic | Paleozoic | Permian [Guadalupe]) at surface, covers 35 % of this area

Blaine Formation

Lithology: mudstone; evaporite; dolostone (dolomite); sandstone