State | Alabama |
---|---|
Name | Ordovician System undivided in part (Includes Sequatchie Formation, Elkmont Formation, Leipers Limestone, Inman Formation, Nashville Group, and Stones River Group) |
Geologic age | Ordovician |
Lithologic constituents |
Major
Sedimentary > Carbonate > Limestone (Bed)Sequatchie Formation - interbedded fossiliferous limestone; Elkmont Formation - medium to dark-gray phosphatic limestone; Leipers Limestone - medium to dark-gray thin to medium-bedded fossiliferous limestone containing interbeds of argillaceous limestone; Inman Formation - light-gray peloidal limestone; Nashville Group undifferentiated - medium to dark-gray argillaceous and fossiliferous limestone overlain by yellowish-gray laminated silty limestone. Stones River Group -- medium to dark-gray thick to thin-bedded limestone, argillaceous in part, locally very fossiliferous.
Minor
Sedimentary > Clastic > Mudstone > Shale (Bed)Sequatchie Formation - grayish-red and yellowish-gray calcareous shale containing interbedded fossiliferous limestone; Elkmont Formation - medium to dark-gray phosphatic limestone; Leipers Limestone - medium to dark-gray thin to medium-bedded fossiliferous limestone containing interbeds of argillaceous limestone; Inman Formation - light-gray peloidal limestone; Nashville Group undifferentiated -- medium to dark-gray argillaceous and fossiliferous limestone overlain by yellowish-gray laminated silty limestone. Stones River Group -- medium to dark-gray thick to thin-bedded limestone, argillaceous in part, locally very fossiliferous.
|
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 | Limestone - Madison |