Buda Limestone (TXKbu;0)

State	Texas
Name	Buda Limestone
Geologic age	Phanerozoic \| Mesozoic \| Cretaceous-Early
Original map label	Kbu
Comments	In Eastern part of Trans-Pecos and High Plains- Buda Ls--fine grained, bioclastic, commonly glauconitic, pyrite, hard, massive, poorly bedded to nodular, lt gray to pale orange; urrows filled with chalky marl, abdt pelecypods; formation is as much as 45 ft thick. In Western part of Trans-Pecos Texas- Buda Ls--upper part-- thin to thick beds, resistant, few chert nodules; middle--interbedded gray ls, marl, and calc shale, limonite nodules; lower--fossilif., aphanitic ls, thin to thick beds; formation is 200-350 ft thick. In North, central, and south Texas including Quaternary for all of west Texas- Buda Ls--fine grained, bioclastic (mollusk-fragment-bearing), marly interbeds, commonly glauconitic, pyrite, hard, massive lt gray to pale orange; formation is 45-100 ft thick.
Primary rock type	limestone
Secondary rock type
Other rock types
Lithologic constituents	Major Sedimentary > Carbonate > Limestone (Bed) Minor Sedimentary > Clastic > Mudstone > Shale (Bed) 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, 1974, San Antonio Sheet, Geologic Atlas of Texas, University of Texas, Bureau of Economic Geology, scale 1:250,000. Bureau of Economic Geology, 1979, Marfa Sheet, Geologic Atlas of Texas: Bureau of Economic Geology and The University of Texas at Austin, scale 1:250,000. 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, 1977, Del Rio Sheet, Geologic Atlas of Texas, University of Texas, Bureau of Economic Geology, 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, 1970, Waco Sheet, Geologic Atlas of Texas, University of Texas, Bureau of Economic Geology, scale 1:250,000. Bureau of Economic Geology, 1974, Austin Sheet, Geologic Atlas of Texas, University of Texas, Bureau of Economic Geology, scale 1:250,000.
Geographic coverage	Brewster - Crockett - Culberson - Edwards - Hudspeth - Irion - Jeff Davis - Kimble - Kinney - Menard - Pecos - Reagan - Reeves - Schleicher - Sutton - Terrell - Tom Green - Upton - Uvalde - Val Verde