Comanchean rocks, undivided

Comanchean rocks, undivided
State Texas
Name Comanchean rocks, undivided
Geologic age Early Cretaceous; Washita Series
Lithologic constituents
Sedimentary > Carbonate > Limestone (Bed)
Sedimentary > Clastic > Mudstone > Shale (Bed)
Sedimentary > Carbonate > Marlstone (Bed)
Comments In Eastern part of Trans-Pecos and High Plains- limestone and shale, marl, clay, and limestone In Western part of Trans-Pecos Texas- Quitman Mtns and Sierra Blanco area--limestone and shale, marl, and clay.Diablo Plateau--marl and clay; Sierra Prieta--fossiliferous shale, sandy shale, and marl correlative with Benevides and younger formations. Cornudas Mtns and Dog Mtn--silty ls and shale conglomeratic ls., contains late Comanchean fossils. Kent area--Buda Ls and San Martine Mbr of Boracho Fm undivided.

Bureau of Economic Geology, 1968, Van Horn-El Paso Sheet, Geologic Atlas of Texas: Bureau of Economic Geology, The University of Texas at Austin, scale 1:250,000.

Bureau of Economic Geology, 1992, Geologic Map of Texas: University of Texas at Austin, Virgil E. Barnes, project supervisor, Hartmann, B.M. and Scranton, D.F., cartography, scale 1:500,000.

NGMDB product
Counties Hudspeth