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Briggs Formation

Briggs Formation
StateTexas
NameBriggs Formation
Geologic agePhanerozoic | Paleozoic | Permian [Leonard]
Original map labelPbg
CommentsIn Malone Mtns unit is mostly gypsum, some carbonate rocks. Gypsum sparry, granular, white. Carbonate rxs upper part--ls and pisolitic dolomite interbedded with gypsum; at base persistent 25-ft unit of brwn-yell sandy dolomite; in middle--mostly dolomite; in lower part--ls, fine grained, cherty, dk gray, marine megafossils. Thickness 630 ft, base not exposed
Primary rock typeevaporite
Secondary rock typedolostone (dolomite)
Other rock types
Lithologic constituents
Major
Sedimentary > Chemical > Evaporite > Gypsum (Bed)
Minor
Sedimentary > Carbonate > Dolostone (Bed)
Incidental
Sedimentary > Carbonate > Limestone (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, 1968, Van Horn-El Paso Sheet, Geologic Atlas of Texas: Bureau of Economic Geology, The University of Texas at Austin, scale 1:250,000.
Geographic coverageHudspeth

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