Blaine Formation
(Permian; Guadalupe Series) at surface, covers 57 % of this area Blaine Formation
Alluvium
(Holocene) at surface, covers 5 % of this area Alluvium
Terrace deposits
(Pleistocene and Holocene) at surface, covers 0.7 % of this area Terrace deposits
Lingos Formation
(Middle (?) Pleistocene to Recent) at surface, covers 0.3 % of this area Lingos Formation