Geologic units in Scurry county, Texas

Ogallala Formation (Pliocene to Miocene) at surface, covers 46 % of this area

Ogallala Formation

Dockum Group, undivided (Late Triassic) at surface, covers 32 % of this area

Dockum Group

Quartermaster Formation (Permian; Guadalupe Series) at surface, covers 8 % of this area

Quartermaster Formation; North and central Texas including panhandle.

Quaternary deposit, undivided (Quaternary) at surface, covers 5 % of this area

Quaternary deposit, undivided

Lingos Formation (Middle (?) Pleistocene to Recent) at surface, covers 4 % of this area

Lingos Formation

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

Sand sheet deposits

Alluvium (Holocene) at surface, covers 2 % of this area

Alluvium

Whitehorse Group, undivided (Permian; Guadalupe Series) at surface, covers 0.7 % of this area

Whitehorse Group, undivided

Edwards Limestone and Antlers Sand, undivided (Early Cretaceous) at surface, covers 0.4 % of this area

Edwards Limestone and Antlers Sand, undivided

Tahoka Formation (Pleistocene; Wisconsinan) at surface, covers 0.4 % of this area

Tahoka Formation

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

Playa deposits

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

Terrace deposits