Geologic units in Parmer county, Texas

Blackwater Draw Formation (Pleistocene) at surface, covers 91 % of this area

Blackwater Draw Formation

Ogallala Formation (Pliocene to Miocene) at surface, covers 8 % of this area

Ogallala Formation

Playa deposits (Pleistocene and Holocene) at surface, covers 0.5 % of this area

Playa deposits

Sand sheet deposits (Holocene) at surface, covers 0.4 % of this area

Sand sheet deposits

Sand dune deposits (Holocene) at surface, covers < 0.1 % of this area

Sand dune deposits