State | Alabama |
---|---|
Name | Tuscumbia Limestone and Fort Payne Chert undifferentiated |
Geologic age | Mississippian |
Lithologic constituents |
Major
Sedimentary > Chemical > Chert (Bed)Tuscumbia Limestone - cherty limestone; Fort Payne Chert - abundant irregular light-gray chert nodules and beds
Sedimentary > Carbonate > Limestone (Bed)Tuscumbia Limestone - light to dark-gray fossiliferous and oolitic partly argillaceous and cherty limestone; Fort Payne Chert - dark-gray to light-gray limestone
Minor
Sedimentary > Clastic > Mudstone > Shale > Phosphatic-shale (Bed)Commonly present below the Fort Payne is greenish-gray to grayish-red phosphatic shale (Maury Formation)
|
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 | Bibb - Calhoun - Cherokee - Chilton - Etowah - Jefferson - Saint Clair - Shelby - Talladega |