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Geologic units in Glasscock county, Texas

Blackwater Draw Formation (Pleistocene) at surface, covers 52 % of this area

Blackwater Draw Formation

Edwards Limestone (Early Cretaceous) at surface, covers 23 % of this area

Edwards Limestone

Quaternary deposit, undivided (Quaternary) at surface, covers 19 % of this area

Quaternary deposit, undivided

Sand sheet deposits (Holocene) at surface, covers 2 % of this area

Sand sheet deposits

Ogallala Formation (Pliocene to Miocene) at surface, covers 2 % of this area

Ogallala Formation

Alluvium (Holocene) at surface, covers 1 % of this area

Alluvium

Antlers Sand (Early Cretaceous) at surface, covers 0.6 % of this area

Antlers Sand

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

Playa deposits

Tahoka Formation (Pleistocene; Wisconsinan) at surface, covers 0.2 % of this area

Tahoka Formation

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

Terrace deposits

Sand dune deposits (Holocene) at surface, covers < 0.1 % of this area

Sand dune deposits

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

Caliche deposits