Geologic units in Ward county, Texas

Sand sheet deposits (Holocene) at surface, covers 45 % of this area

Sand sheet deposits

Caliche deposits (Pleistocene and Holocene) at surface, covers 24 % of this area

Caliche deposits

Alluvium (Holocene) at surface, covers 11 % of this area

Alluvium

Terrace deposits (Pleistocene and Holocene) at surface, covers 8 % of this area

Terrace deposits

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

Sand deposits, undivided

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

Dune sand sheet deposits

Dockum Group, undivided (Late Triassic) at surface, covers 2 % of this area

Dockum Group

Gypsite deposits (Pleistocene and Holocene) at surface, covers 0.9 % of this area

Gypsite deposits

Quaternary deposit, undivided (Quaternary) at surface, covers 0.7 % of this area

Quaternary deposit, undivided

Older alluvial deposits (Pleistocene) at surface, covers 0.5 % of this area

Older alluvial deposits

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

Tahoka Formation

Gatuna Formation (Middle (?) Pleistocene) at surface, covers 0.2 % of this area

Gatuna Formation

Maxon Sandstone and Glen Rose Limestone, undivided (Early Cretaceous) at surface, covers 0.1 % of this area

Maxon Sandstone and Glen Rose Limestone, undivided

Pond deposits (Pleistocene) at surface, covers < 0.1 % of this area

Pond deposits