Geologic units in Irion county, Texas

Edwards Limestone (Early Cretaceous) at surface, covers 62 % of this area

Edwards Limestone

Quaternary deposit, undivided (Quaternary) at surface, covers 26 % of this area

Quaternary deposit, undivided

Antlers Sand (Early Cretaceous) at surface, covers 6 % of this area

Antlers Sand

Alluvium (Holocene) at surface, covers 4 % of this area

Alluvium

Buda Limestone (Early Cretaceous) at surface, covers 2 % of this area

Buda Limestone; Eastern part of Trans-Pecos and High Plains and Western part of Trans-Pecos and North, central, and south Texas including Quaternary for all of west Texas.

Whitehorse Group, undivided (Permian; Guadalupe Series) at surface, covers < 0.1 % of this area

Whitehorse Group, undivided

Lingos Formation (Middle (?) Pleistocene to Recent) at surface, covers < 0.1 % of this area

Lingos Formation

High gravel deposits (Pleistocene) at surface, covers < 0.1 % of this area

High gravel deposits