Geologic units in Shackelford county, Texas

Lueders Formation (Permian; Leonard Series) at surface, covers 21 % of this area

Lueders Formation

Moran Formation (Permian; Wolfcamp Series) at surface, covers 10 % of this area

Moran Formation

Talpa Formation (Permian; Leonard Series) at surface, covers 9 % of this area

Talpa Formation

Admiral Formation (Permian; Wolfcamp Series) at surface, covers 9 % of this area

Admiral Formation

Jagger Bend and Valera Formations, undivided (Permian; Leonard Series) at surface, covers 9 % of this area

Jagger Bend and Valera Formations, undivided

Santa Anna Branch Shale (Permian; Wolfcamp Series) at surface, covers 7 % of this area

Santa Anna Branch Shale

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

Grape Creek Formation

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

Bead Mountain Formation

Alluvium (Holocene) at surface, covers 5 % of this area

Alluvium

Elm Creek Formation (Permian; Leonard Series) at surface, covers 4 % of this area

Elm Creek Formation

Sedwick Formation (Permian; Wolfcamp Series) at surface, covers 4 % of this area

Sedwick Formation

Coleman Junction Formation (Permian; Wolfcamp Series) at surface, covers 3 % of this area

Coleman Junction Formation

Clear Fork Group (Permian; Leonard Series) at surface, covers 3 % of this area

Clear Fork Group

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

Terrace deposits

Pueblo Formation (Permian; Wolfcamp Series) at surface, covers 0.9 % of this area

Pueblo Formation

Sedwick and Moran Formations, undivided (Permian; Wolfcamp Series) at surface, covers 0.9 % of this area

Sedwick and Moran Formations, undivided

Seymour Formation (Middle Pleistocene; Irvingtonian) at surface, covers 0.7 % of this area

Seymour Formation

Playa deposits (Pleistocene and Holocene) at surface, covers 0.1 % of this area

Playa deposits

Quaternary deposit, undivided (Quaternary) at surface, covers 0.1 % of this area

Quaternary deposit, undivided