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Mineral Resources > Online Spatial Data > Geology > by state > Texas Geology

Geologic units in Reeves county, Texas

sand sheet deposits (Phanerozoic | Cenozoic | Quaternary | Holocene) at surface, covers < 0.1 % of this area

sand sheet deposits

Lithology: sand; silt

Tahoka Formation (Phanerozoic | Cenozoic | Quaternary | Pleistocene [Wisconsinan]) at surface, covers 1.0 % of this area

Tahoka Formation

Lithology: clay or mud; silt; sand; gravel

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

sand, silt, clay, and gravel. locally indurated with calcium carbonate (caliche); includes point bar, natural levee, stream channel, sand dune, terrace, alluvial fan, landslide bolson and playa deposits

Lithology: sand ; silt ; clay or mud; gravel; carbonate

sand dune deposits (Phanerozoic | Cenozoic | Quaternary | Holocene) at surface, covers < 0.1 % of this area

sand dune deposits

Lithology: sand; silt

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

Gulfian rocks, undivided

Lithology: mudstone; shale; limestone

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

Buda Limestone and San Martine Member of Borache Limestone, undivided

Lithology: limestone; shale

Buda Limestone (Phanerozoic | Mesozoic | Cretaceous-Early) at surface, covers 1 % of this area

Buda Limestone

Lithology: limestone

gypsum of Rustler, Salado, and Castile Formations, undivided (Phanerozoic | Paleozoic | Permian [Ochoa]) at surface, covers 0.9 % of this area

gypsum of Rustler, Salado, and Castile Formations, undivided

Lithology: evaporite

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

Quaternary-Tertiary deposits, undivided

Lithology: gravel; conglomerate

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

Maxon Sandstone and Glen Rose Limestone, undivided

Lithology: sandstone; limestone

older alluvial deposits (Phanerozoic | Cenozoic | Quaternary | Pleistocene) at surface, covers 31 % of this area

older alluvial deposits

Lithology: gravel; sand; silt

alluvial fan deposits (Phanerozoic | Cenozoic | Quaternary | Pleistocene Holocene) at surface, covers 0.3 % of this area

alluvial fan deposits

Lithology: alluvial fan

Boracho Limestone (Phanerozoic | Mesozoic | Cretaceous-Early) at surface, covers 1 % of this area

Boracho Limestone

Lithology: limestone

Terrace deposits (Phanerozoic | Cenozoic | Quaternary | Pleistocene Holocene) at surface, covers 3 % of this area

Terrace deposits

Lithology: terrace; sand; gravel; silt; clay or mud

Dewey Lake Red beds (Phanerozoic | Paleozoic | Permian [Ochoa]) at surface, covers < 0.1 % of this area

Dewey Lake Red beds

Lithology: fine-grained mixed clastic; evaporite

Leona Formation (Phanerozoic | Cenozoic | Quaternary | Pleistocene) at surface, covers < 0.1 % of this area

Leona Formation

Lithology: sand; gravel; clay or mud

Gatuna Formation (Phanerozoic | Cenozoic | Quaternary | Pleistocene-Middle(?)) at surface, covers 2 % of this area

Gatuna Formation

Lithology: sand; conglomerate; evaporite; limestone; siltstone; shale

land slide deposits (Phanerozoic | Cenozoic | Quaternary | Pleistocene Holocene) at surface, covers 1 % of this area

land slide deposits

Lithology: landslide

younger volcanic rocks of Davis Mountains area including Brooks Mountain, Goat Canyon, Medley, Barrel Springs, Wild Cherry, Eppenaurer Ranch, Mount Locke, and Merrill Formations (Phanerozoic | Cenozoic | Tertiary | Oligocene-Early) 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

Lithology: trachyte; rhyolite; tuff; latite

Eocene volcanic rocks (Phanerozoic | Cenozoic | Tertiary | Eocene) at surface, covers < 0.1 % of this area

Eocene volcanic rocks

Lithology: rhyolite

alluvium (Phanerozoic | Cenozoic | Quaternary) at surface, covers < 0.1 % of this area

Alluvium; upper and middle Quaternary

Lithology: alluvium

Cox Sandstone (Phanerozoic | Mesozoic | Cretaceous-Early) at surface, covers 0.6 % of this area

Cox Sandstone

Lithology: mixed clastic/carbonate; limestone

gypsite deposits (Phanerozoic | Cenozoic | Quaternary | Pleistocene Holocene) at surface, covers 0.7 % of this area

gypsite deposits

Lithology: evaporite

Benevides Formation and Finlay Limestone, undivided (Phanerozoic | Mesozoic | Cretaceous-Early [Comanchean]) at surface, covers < 0.1 % of this area

Benevides Formation and Finlay Limestone, undivided

Lithology: limestone; sandstone; shale

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 (Phanerozoic | Cenozoic | Tertiary | Eocene-Late) 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

Lithology: rhyolite; trachyte; lava flow

Bouquillas Formation (Phanerozoic | Mesozoic | Cretaceous-Late) at surface, covers 0.3 % of this area

Bouquillas Formation

Lithology: limestone; shale; mudstone; siltstone

Rustler Formation (Phanerozoic | Paleozoic | Permian [Ochoa]) at surface, covers 0.7 % of this area

Rustler Formation

Lithology: limestone; siltstone; sandstone

Toy Limestone (Phanerozoic | Cenozoic | Quaternary | Pleistocene-Early(?)) at surface, covers 0.5 % of this area

Toy Limestone

Lithology: limestone

Washita Group (Phanerozoic | Mesozoic | Cretaceous-Early [Comanchean] Cretaceous-Late ) at surface, covers 1 % of this area

Washita Group

Lithology: clay or mud; limestone

Rustler Formation (Phanerozoic | Paleozoic | Permian) at surface, covers < 0.1 % of this area

Rustler Formation; siltstone, gypsum, sandstone, and dolomite; Upper Permian

Lithology: carbonate; fine-grained mixed clastic; evaporite

Finlay Limestone (Phanerozoic | Mesozoic | Cretaceous-Early [Comanchean Albian]) at surface, covers < 0.1 % of this area

Finlay Limestone

Lithology: limestone; siltstone; sandstone

alluvium (Phanerozoic | Cenozoic | Quaternary | Holocene) at surface, covers 49 % of this area

alluvium

Lithology: sand; silt; clay or mud; gravel

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

Dockum Group

Lithology: fine-grained mixed clastic; limestone; conglomerate

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

Quaternary-Tertiary bolson deposits

Lithology: clay or mud; silt; sandstone; conglomerate