Geologic units in Reeves county, Texas

Alluvium (Holocene) at surface, covers 49 % of this area

Alluvium

Older alluvial deposits (Pleistocene) at surface, covers 31 % of this area

Older alluvial deposits

Terrace deposits (Pleistocene and Holocene) at surface, covers 3 % of this area

Terrace deposits

Quaternary deposit, undivided (Quaternary) at surface, covers 2 % of this area

Quaternary deposit, undivided

Gatuna Formation (Middle (?) Pleistocene) at surface, covers 2 % of this area

Gatuna Formation

Land slide deposits (Pleistocene and Holocene) at surface, covers 1 % of this area

Land slide deposits

Boracho Limestone (Early Cretaceous) at surface, covers 1 % of this area

Boracho Limestone

Buda Limestone (Early Cretaceous) at surface, covers 1 % of this area

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.

Washita Group (Early and Late Cretaceous; Comanchean Series) at surface, covers 1 % of this area

Washita Group

Older volcanic rocks of Davis and Barilla Mountains, including Sheep Pasture, Sleeping Lion, Frazier Canyon, Adobe Canyon, and Limpia formations, Gomez Tuff, Star Mountain Rhyolite, and Huelster Formation (Late Eocene) at surface, covers 1 % of this area

Older volcanic rocks of Davis and Barilla Mountains, including Sheep Pasture, Sleeping Lion, Frazier Canyon, Adobe Canyon, and Limpia formations, Gomez Tuff, Star Mountain Rhyolite, and Huelster Formation

Tahoka Formation (Pleistocene; Wisconsinan) at surface, covers 1.0 % of this area

Tahoka Formation

Quaternary-Tertiary deposits, undivided (Pliocene to Pleistocene) at surface, covers 0.9 % of this area

Quaternary-Tertiary deposits, undivided

Gypsum of Rustler, Salado, and Castile Formations, undivided (Permian; Ochoa Series) at surface, covers 0.9 % of this area

Gypsum of Rustler, Salado, and Castile Formations, undivided

Rustler Formation (Permian; Ochoa Series) at surface, covers 0.7 % of this area

Rustler Formation

Gypsite deposits (Pleistocene and Holocene) at surface, covers 0.7 % of this area

Gypsite deposits

Cox Sandstone (Early Cretaceous) at surface, covers 0.6 % of this area

Cox Sandstone

Toy Limestone (Early (?) Pleistocene) at surface, covers 0.5 % of this area

Toy Limestone

Buda Limestone and San Martine Member of Borache Limestone, undivided (Late Cretaceous) at surface, covers 0.4 % of this area

Buda Limestone and San Martine Member of Borache Limestone, undivided

Bouquillas Formation (Late Cretaceous) at surface, covers 0.3 % of this area

Bouquillas Formation

Maxon Sandstone and Glen Rose Limestone, undivided (Early Cretaceous) at surface, covers 0.3 % of this area

Maxon Sandstone and Glen Rose Limestone, undivided

Alluvial fan deposits (Pleistocene and Holocene) at surface, covers 0.3 % of this area

Alluvial fan deposits

Gulfian rocks, undivided (Late Cretaceous) at surface, covers 0.1 % of this area

Gulfian rocks, undivided

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

Sand dune deposits

Dockum Group, undivided (Late Triassic) at surface, covers < 0.1 % of this area

Dockum Group

Finlay Limestone (Early Cretaceous; Comanchean; Albian Series) at surface, covers < 0.1 % of this area

Finlay Limestone

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

Sand sheet deposits

Quaternary-Tertiary bolson deposits (Pliocene to Pleistocene) at surface, covers < 0.1 % of this area

Quaternary-Tertiary bolson deposits

Dewey Lake Red beds (Permian; Ochoa Series) at surface, covers < 0.1 % of this area

Dewey Lake Red beds

Younger volcanic rocks of Davis Mountains area including Brooks Mountain, Goat Canyon, Medley, Barrel Springs, Wild Cherry, Eppenaurer Ranch, Mount Locke, and Merrill Formations (Early Oligocene) at surface, covers < 0.1 % of this area

Younger volcanic rocks of Davis Mountains area including Brooks Mountain, Goat Canyon, Medley, Barrel Springs, Wild Cherry, Eppenaurer Ranch, Mount Locke, and Merrill Formations

Benevides Formation and Finlay Limestone, undivided (Early Cretaceous; Comanchean Series) at surface, covers < 0.1 % of this area

Benevides Formation and Finlay Limestone, undivided

Rustler Formation (Upper Permian) at surface, covers < 0.1 % of this area

Siltstone, gypsum, sandstone, and dolomite.

Leona Formation (Pleistocene) at surface, covers < 0.1 % of this area

Leona Formation

Eocene volcanic rocks (Eocene) at surface, covers < 0.1 % of this area

Eocene volcanic rocks

Alluvium (Holocene to upper Pleistocene) at surface, covers < 0.1 % of this area

Alluvium