Silurian System undivided (Includes Wayne Group and Brassfield Limestone)

Wayne Group - medium-gray, greenish-gray, and moderate-red argillaceous limestone; moderate-red and greenish-gray shale; and grayish-green fossiliferous limestone with scattered pink calcite crystals. Brassfield Limestone - greenish-gray to light-brownish-gray argillaceous, dolomitic, cherty, sandy, glauconitic limestone.
State Alabama
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