Athens Shale and Lenoir Limestone undifferentiated (ALOal;6)

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
Original map label	Oal
Primary rock type	shale
Secondary rock type	limestone
Other rock types	mudstone
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).
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. [http://www.ogb.state.al.us/ogb/ogb_gisdata/algeomap.zip]
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. [http://www.ogb.state.al.us/ogb/ogb_gisdata/algeomap.zip]
Geographic coverage	Bibb - Chilton - Shelby