Geologic units in Bailey county, Texas

Blackwater Draw Formation (Pleistocene) at surface, covers 59 % of this area

Blackwater Draw Formation

Sand deposits, undivided (Holocene) at surface, covers 18 % of this area

Sand deposits, undivided

Ogallala Formation (Pliocene to Miocene) at surface, covers 13 % of this area

Ogallala Formation

Tahoka Formation (Pleistocene; Wisconsinan) at surface, covers 3 % of this area

Tahoka Formation

Sand sheet deposits (Holocene) at surface, covers 3 % of this area

Sand sheet deposits

Double Lakes Formation (Pleistocene; Early Wisconsinan) at surface, covers 2 % of this area

Double Lakes Formation

Sand dune deposits (Holocene) at surface, covers 1 % of this area

Sand dune deposits

Dune sand sheet deposits (Holocene) at surface, covers 0.3 % of this area

Dune sand sheet deposits

Pond deposits (Pleistocene) at surface, covers 0.2 % of this area

Pond deposits

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

Playa deposits

Duck Creek Limestone (Early Cretaceous; Comanchean Series) at surface, covers < 0.1 % of this area

Duck Creek Limestone

Kiamichi Formation (Early Cretaceous; Comanchean Series) at surface, covers < 0.1 % of this area

Kiamichi Formation

Duck Creek Limestone and Kiamichi Formation, undivided (Early Cretaceous) at surface, covers < 0.1 % of this area

Duck Creek Limestone and Kiamichi Formation, undivided; Eastern part of Trans-Pecos and High Plains.

Ogallala Formation (Lower Pliocene to middle Miocene) at surface, covers < 0.1 % of this area

Alluvial and eolian deposits, and petrocalcic soils of the southern High Plains. Locally includes Qoa.

Older alluvial deposits of upland plains and piedmont areas, and calcic soils and eolian cover sediments of High Plains region (Middle to lower Pleistocene) at surface, covers < 0.1 % of this area

Includes scattered lacustrine, playa, and alluvial deposits of the Tahoka, Double Tanks, Tule, Blanco, Blackwater Draw, and Gatuna Formations, the latter of which may be Pliocene at base; outcrops, however, are basically of Quaternary deposits.

Lacustrine and playa-lake deposits (Holocene) at surface, covers < 0.1 % of this area

Includes associated alluvial and eolian deposits of major lake basins.