Little Oak and Lenoir Limestones undifferentiated (ALOlol;6)

Little Oak and Lenoir Limestones undifferentiated - dark-gray argillaceous, fossiliferous medium to thick-bedded limestone; locally contains rare chert in upper part and an interval of fenestral mudstone in lower part (Mosheim Limestone Member of the Lenoir Limestone). Between Siluria and Pelham in Shelby County, the Little Oak and Lenoir Limestones are separated by a tongue of the Athens Shale.

State	Alabama
Name	Little Oak and Lenoir Limestones undifferentiated
Geologic age	Ordovician
Original map label	Olol
Primary rock type	limestone
Secondary rock type	mudstone
Other rock types	chert
Lithologic constituents	Major Sedimentary > Carbonate > Limestone (Bed)dark-gray argillaceous, fossiliferous medium to thick-bedded limestone Minor Sedimentary > Clastic > Mudstone (Bed)fenestral mudstone in lower part (Mosheim Limestone Member of the Lenoir Limestone). Incidental Sedimentary > Chemical > Chert (Bed)locally contains rare chert in upper part
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	Calhoun - Cherokee - Etowah - Jefferson - Saint Clair - Shelby