Athens Shale and Lenoir Limestone undifferentiated

Athens Shale -- black graptolitic shale, locally contains interbedded dark-gray limestone. Lenoir Limestone -- dark-gray medium to thick-bedded argillaceous limestone; locally contains an interval of fenestral mudstone at the base (Mosheim Limestone Member).
State Alabama
Name Athens Shale and Lenoir Limestone undifferentiated
Geologic age Ordovician
Lithologic constituents
Major
Sedimentary > Carbonate > Limestone (Bed)Athens Shale - locally contains interbedded dark-gray limestone; Lenoir Limestone - dark-gray medium to thick-bedded argillaceous limestone
Sedimentary > Clastic > Mudstone > Shale > Black-shale (Bed)Athens Shale - black graptolitic shale
Minor
Sedimentary > Clastic > Mudstone (Bed)Lenoir Limestone - locally contains an interval of fenestral mudstone at the base (Mosheim Limestone Member).
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 - Chilton - Shelby