Geologic units in Taylor county, Texas

Clear Fork Group (Permian; Leonard Series) at surface, covers 45 % of this area

Clear Fork Group

Edwards Limestone (Early Cretaceous) at surface, covers 16 % of this area

Edwards Limestone

Antlers Sand (Early Cretaceous) at surface, covers 11 % of this area

Antlers Sand

Quaternary deposit, undivided (Quaternary) at surface, covers 11 % of this area

Quaternary deposit, undivided

Alluvium (Holocene) at surface, covers 6 % of this area

Alluvium

Seymour Formation (Middle Pleistocene; Irvingtonian) at surface, covers 4 % of this area

Seymour Formation

Lueders Formation (Permian; Leonard Series) at surface, covers 3 % of this area

Lueders Formation

San Angelo Formation (Permian; Guadalupe Series) at surface, covers 3 % of this area

San Angelo Formation

Terrace deposits (Pleistocene and Holocene) at surface, covers 0.4 % of this area

Terrace deposits

Blaine Formation (Permian; Guadalupe Series) at surface, covers 0.4 % of this area

Blaine Formation

Talpa Formation (Permian; Leonard Series) at surface, covers 0.2 % of this area

Talpa Formation

Grape Creek Formation (Permian; Leonard Series) at surface, covers < 0.1 % of this area

Grape Creek Formation