Comanchean rocks, undivided (TXKc;0)

State	Texas
Name	Comanchean rocks, undivided
Geologic age	Phanerozoic \| Mesozoic \| Cretaceous-Early [Washita]
Original map label	Kc
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.
Primary rock type	limestone
Secondary rock type	shale
Other rock types	mudstone; clay or mud
Lithologic constituents	Major Sedimentary > Carbonate > Limestone (Bed) Sedimentary > Clastic > Mudstone > Shale (Bed) Minor Sedimentary > Carbonate > Marlstone (Bed)
Map references	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
Unit references	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.
Geographic coverage	Hudspeth