Geologic units in Dickens county, Texas

Quartermaster Formation (Permian; Guadalupe Series) at surface, covers 29 % of this area

Quartermaster Formation; North and central Texas including panhandle.

Whitehorse Group, undivided (Permian; Guadalupe Series) at surface, covers 18 % of this area

Whitehorse Group, undivided

Dockum Group, undivided (Late Triassic) at surface, covers 15 % of this area

Dockum Group

Sand sheet deposits (Holocene) at surface, covers 11 % of this area

Sand sheet deposits

Lingos Formation (Middle (?) Pleistocene to Recent) at surface, covers 11 % of this area

Lingos Formation

Ogallala Formation (Pliocene to Miocene) at surface, covers 8 % of this area

Ogallala Formation

Blackwater Draw Formation (Pleistocene) at surface, covers 5 % of this area

Blackwater Draw Formation

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

Alluvium

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

Terrace deposits

Playa deposits (Pleistocene and Holocene) at surface, covers 0.2 % of this area

Playa deposits

Quaternary deposit, undivided (Quaternary) at surface, covers 0.2 % of this area

Quaternary deposit, undivided