Blackwater Draw Formation
Quaternary deposit, undivided
Edwards Limestone
Fredericksburg Group
Caliche deposits
Washita Group
Maxon Sandstone and Glen Rose Limestone, undivided
Alluvium
Sand sheet deposits
Dune sand sheet deposits
Buda Limestone; Eastern part of Trans-Pecos and High Plains and Western part of Trans-Pecos and North, central, and south Texas including Quaternary for all of west Texas.
Playa deposits
Tahoka Formation
Dockum Group
Sand deposits, undivided
Pond deposits
Sand dune deposits