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Mineral Resources On-Line Spatial Data

Goodland Limestone and Walnut Clay, undivided

Goodland Limestone and Walnut Clay, undivided
StateTexas
NameGoodland Limestone and Walnut Clay, undivided
Geologic agePhanerozoic | Mesozoic | Cretaceous-Early [Comanchean]
Original map labelKgw
CommentsGoodland Limestone intergradational laterally with Comanche Peak Ls. and differs from it chifly in that the Goodland is more coarsely nodular, contains fewer and thinner clay beds, and massive resistant ls. beds are more numerous; upper 5 ft massive, bioclast-packed aphanitic ls and ls. compose of oolites in sparry calcite; thickness 90 +- ft. Walnut Clay clay and limestone about equally abdt. Limest. aphanitic, in part bioclastic. Clay fossilif., calcar., olive brown, weathers yell-brn. Thickness 30+-ft.
Primary rock typelimestone
Secondary rock typeclay or mud
Other rock types
Lithologic constituents
Major
Sedimentary > Carbonate > Limestone (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, 1972, Dallas sheet, Geologic Atlas of Texas, Bureau of Economic Geology, University of Texas at Austin, scale 1:250,000.
Geographic coverageCooke - Denton - Grayson - Johnson - Montague - Parker - Tarrant - Wise

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