State | Alabama |
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Name | Silurian System undivided (Includes Wayne Group and Brassfield Limestone) |
Geologic age | Silurian |
Lithologic constituents |
Major
Sedimentary > Carbonate > Limestonemedium-gray, greenish-gray, and moderate-red argillaceous limestone; grayish-green fossiliferous limestone with scattered pink calcite crystals; greenish-gray to light-brownish-gray argillaceous, dolomitic, cherty, sandy, glauconitic limestone.
Minor
Sedimentary > Carbonate > Dolostonegreenish-gray to light-brownish-gray argillaceous, dolomitic, cherty, sandy, glauconitic limestone.
Sedimentary > Clastic > Mudstone > Shalemoderate-red and greenish-gray shale
Incidental
Sedimentary > Chemical > Chertgreenish-gray to light-brownish-gray argillaceous, dolomitic, cherty, sandy, glauconitic limestone.
|
References | Szabo, M.W., Osborne, E.W., Copeland, C.W. Jr., and Neathery, T.L., 1988, Geologic Map of Alabama, Geological Survey of Alabama Special Map 220, scale 1:250,000. |
NGMDB product | |
Counties | Lauderdale - Madison |