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
Gypsite deposits
(Pleistocene and Holocene) at surface, covers 0.9 % of this area Gypsite 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
Pond deposits
(Pleistocene) at surface, covers < 0.1 % of this area Pond deposits