Edwards Limestone and Antlers Sand, undivided (TXKea;0)

State	Texas
Name	Edwards Limestone and Antlers Sand, undivided
Geologic age	Phanerozoic \| Mesozoic \| Cretaceous-Early
Original map label	Kea
Comments	Sandstone, claystone, and conglomerate. Thickness as much as 200 ft, variable because of irreg. surface on which it was deposited. Limestone, dolostone, and chert; ls. aphanitic to fine grained, massive to thin-bedded, hard, brittle, in part rudistid biostromes, much miliolid biosparite, Exogyra texana, and gastropods; dolostone fine to v. fine grained, porous, chert nodules common. important aquifer. 100-150 ft thick
Primary rock type	sandstone
Secondary rock type	limestone
Other rock types	claystone
Lithologic constituents	Major Sedimentary > Carbonate > Limestone (Bed) Sedimentary > Clastic > Sandstone (Bed) Minor Sedimentary > Clastic > Mudstone > Claystone (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, 1976, Brownwood sheet, Geologic Atlas of Texas, Bureau of Economic Geology, University of Texas at Austin, scale 1:250,000. Bureau of Economic Geology, 1981, Llano sheet, Geologic Atlas of Texas, Bureau of Economic Geology, University of Texas at Austin, scale 1:250,000. Bureau of Economic Geology, 1967, Sherman Sheet, Geologic Atlas of Texas: University of Texas at Austin, Bureau of Economic Geology, scale 1:250,000. Bureau of Economic Geology, 1987, Wichita Falls-Lawton Sheet, Geologic Atlas of Texas: University of Texas at Austin, Bureau of Economic Geology, scale 1:250,000.
Geographic coverage	Borden - Dawson - Garza - Scurry