|Geologic age||Pleistocene and Holocene|
Sedimentary > Chemical (Bed)soil carbonate
|Comments||chiefly pedogenic carbonate stripped of covering materials, of several ages, thickness as much as 35 ft|
Bureau of Economic Geology, 1976, Pecos Sheet, Geologic Atlas of Texas: University of Texas at Austin, Bureau of Economic Geology, 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.
|Counties||Andrews - Concho - Crane - Deaf Smith - Ector - Gillespie - Glasscock - Hartley - Loving - Martin - Mason - Midland - Oldham - Reagan - Upton - Ward - Winkler|