Geologic units in Concho county, Texas

Edwards Limestone (Early Cretaceous) at surface, covers 33 % of this area

Edwards Limestone

Quaternary deposit, undivided (Quaternary) at surface, covers 18 % of this area

Quaternary deposit, undivided

Lueders Formation (Permian; Leonard Series) at surface, covers 8 % of this area

Lueders Formation

Talpa Formation (Permian; Leonard Series) at surface, covers 8 % of this area

Talpa Formation

Grape Creek Formation (Permian; Leonard Series) at surface, covers 7 % of this area

Grape Creek Formation

Bead Mountain Formation (Permian; Leonard Series) at surface, covers 5 % of this area

Bead Mountain Formation

Jagger Bend and Valera Formations, undivided (Permian; Leonard Series) at surface, covers 4 % of this area

Jagger Bend and Valera Formations, undivided

Antlers Sand (Early Cretaceous) at surface, covers 3 % of this area

Antlers Sand

Alluvium (Holocene) at surface, covers 3 % of this area

Alluvium

Elm Creek Formation (Permian; Leonard Series) at surface, covers 2 % of this area

Elm Creek Formation

Terrace deposits (Pleistocene and Holocene) at surface, covers 2 % of this area

Terrace deposits

Clear Fork Group (Permian; Leonard Series) at surface, covers 2 % of this area

Clear Fork Group

Admiral Formation (Permian; Wolfcamp Series) at surface, covers 1 % of this area

Admiral Formation

Caliche deposits (Pleistocene and Holocene) at surface, covers 1 % of this area

Caliche deposits

High gravel deposits (Pleistocene) at surface, covers 0.4 % of this area

High gravel deposits

Coleman Junction Formation (Permian; Wolfcamp Series) at surface, covers 0.3 % of this area

Coleman Junction Formation

Santa Anna Branch Shale and Sedwick and Moran Formations, undivided (Permian; Wolfcamp Series) at surface, covers 0.2 % of this area

Santa Anna Branch Shale and Sedwick and Moran Formations, undivided