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Geologic units in Ector county, Texas

Dockum Group, undivided (Phanerozoic | Mesozoic | Triassic-Late) at surface, covers 0.3 % of this area
Dockum Group
Lithology: fine-grained mixed clastic; limestone; conglomerate
pond deposits (Phanerozoic | Cenozoic | Quaternary | Pleistocene) at surface, covers 2 % of this area
pond deposits
Lithology: silt; sand
Quaternary deposit, undivided (Phanerozoic | Cenozoic | Quaternary) at surface, covers 6 % 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 sheet deposits (Phanerozoic | Cenozoic | Quaternary | Holocene) at surface, covers 0.3 % of this area
sand sheet deposits
Lithology: sand; silt
playa deposits (Phanerozoic | Cenozoic | Quaternary | Pleistocene Holocene) at surface, covers 0.1 % of this area
playa deposits
Lithology: clay or mud; silt
dune sand sheet deposits (Phanerozoic | Cenozoic | Quaternary | Holocene) at surface, covers 1 % of this area
dune sand sheet deposits
Lithology: sand; silt
caliche deposits (Phanerozoic | Cenozoic | Quaternary | Pleistocene Holocene) at surface, covers 3 % of this area
caliche deposits
Lithology: evaporite
Blackwater Draw Formation (Phanerozoic | Cenozoic | Quaternary | Pleistocene) at surface, covers 38 % of this area
Blackwater Draw Formation
Lithology: sand; silt; clay or mud
alluvium (Phanerozoic | Cenozoic | Quaternary | Holocene) at surface, covers 2 % of this area
alluvium
Lithology: sand; silt; clay or mud; gravel
Ogallala Formation (Phanerozoic | Cenozoic | Tertiary | Pliocene Miocene) at surface, covers < 0.1 % of this area
Ogallala Formation
Lithology: sand; silt; clay or mud; gravel; carbonate
Fredericksburg Group (Phanerozoic | Mesozoic | Cretaceous-Early [Comanchean]) at surface, covers < 0.1 % of this area
Fredericksburg Group
Lithology: limestone; mudstone; dolostone (dolomite); chert
Edwards Limestone (Phanerozoic | Mesozoic | Cretaceous-Early) at surface, covers < 0.1 % of this area
Edwards Limestone
Lithology: limestone; dolostone (dolomite); chert
Antlers Sand (Phanerozoic | Mesozoic | Cretaceous-Early) at surface, covers < 0.1 % of this area
Antlers Sand
Lithology: sand; clay or mud; conglomerate; sandstone; claystone

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Page Last modified: 13:39 on 25-Apr-2014