Geologic units in Midland county, Texas

Blackwater Draw Formation (Pleistocene) at surface, covers 71 % of this area

Blackwater Draw Formation

Caliche deposits (Pleistocene and Holocene) at surface, covers 16 % of this area

Caliche deposits

Quaternary deposit, undivided (Quaternary) at surface, covers 8 % of this area

Quaternary deposit, undivided

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

Sand sheet deposits

Antlers Sand (Early Cretaceous) at surface, covers 1 % of this area

Antlers Sand

Tahoka Formation (Pleistocene; Wisconsinan) at surface, covers 0.6 % of this area

Tahoka Formation

Ogallala Formation (Pliocene to Miocene) at surface, covers 0.5 % of this area

Ogallala Formation

Edwards Limestone (Early Cretaceous) at surface, covers 0.4 % of this area

Edwards Limestone

Pond deposits (Pleistocene) at surface, covers 0.3 % of this area

Pond deposits

Alluvium (Holocene) at surface, covers 0.2 % of this area

Alluvium

Sand dune deposits (Holocene) at surface, covers 0.2 % of this area

Sand dune deposits

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

Dockum Group, undivided (Late Triassic) at surface, covers < 0.1 % of this area

Dockum Group