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Athens Shale and Lenoir Limestone undifferentiated

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
Primary rock type shale
Secondary rock type limestone
Other rock types mudstone
Lithologic constituents
Major
Sedimentary > Clastic > Mudstone > Shale > Black-shale (Bed)Athens Shale -- black graptolitic shale
Sedimentary > Carbonate > Limestone (Bed)Athens Shale - locally contains interbedded dark-gray limestone; Lenoir Limestone -- dark-gray medium to thick-bedded argillaceous limestone
Minor
Sedimentary > Clastic > Mudstone (Bed)Lenoir Limestone -- locally contains an interval of fenestral mudstone at the base (Mosheim Limestone Member).
Map references
Szabo, M. W., Osborne, E. W., Copeland, C. W. Jr., Neathery; T. L., 1988, Geologic Map of Alabama, Geological Survey of Alabama Special Map 220, scale 1:250,000.
Unit references
Szabo, M. W., Osborne, E. W., Copeland, C. W. Jr., Neathery; T. L., 1988, Geologic Map of Alabama, Geological Survey of Alabama Special Map 220, scale 1:250,000.
Counties Bibb - Chilton - Shelby