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undivided part of Washita Group

undivided part of Washita Group
StateTexas
Nameundivided part of Washita Group
Geologic agePhanerozoic | Mesozoic | Cretaceous-Early [Comanchean]
Original map labelKwu
CommentsThick clay units and thin limestone units; thickness 200 ft. Clayst., mudst., and sandst. Aphanitic limest. forms ledge, marine megafossils, alternating clay, marl, and limestone.
Primary rock typeclay or mud
Secondary rock typelimestone
Other rock typesmudstone
Lithologic constituents
Major
Unconsolidated > Fine-detrital > Clay (Bed)
Minor
Sedimentary > Carbonate > Limestone (Bed)
Unconsolidated > Marl (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, 1972, Dallas sheet, Geologic Atlas of Texas, Bureau of Economic Geology, University of Texas at Austin, scale 1:250,000.
Geographic coverageBosque - Erath - Hill - Hood - Johnson - McLennan - Parker - Somervell - Tarrant

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URL: http://mrdata.usgs.gov/geology/state/sgmc-unit.php?unit=TXKwu;0
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