undivided parts of Washita and Fredericksberg Groups (TXKwf;0)

State	Texas
Name	undivided parts of Washita and Fredericksberg Groups
Geologic age	Phanerozoic \| Mesozoic \| Cretaceous-Early
Original map label	Kwf
Comments	calcareous clay, argillaceous limestone, marl, and shale about 100- 140 ft in Waco Sheet
Primary rock type	clay or mud
Secondary rock type	limestone
Other rock types	mudstone; shale
Lithologic constituents	Major Sedimentary > Carbonate > Limestone (Bed) Sedimentary > Clastic > Mudstone > Claystone (Bed) Minor Sedimentary > Carbonate > Marlstone (Bed) Sedimentary > Clastic > Mudstone > Shale (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, 1970, Waco Sheet, Geologic Atlas of Texas, University of Texas, Bureau of Economic Geology, scale 1:250,000.
Geographic coverage	Bell - Coryell - Lampasas