Ft. Payne Formation

Ft. Payne Formation, includes Springville Shale and Chouteau Limestone in southern Illinois.
State Illinois
Name Ft. Payne Formation
Geologic age Mississippian (Tourniaisian to Visean)
Lithologic constituents
Major
Sedimentary > Carbonate > Limestone (Bed)Limestone can be cherty or dolomitic.
Sedimentary > Clastic > Mudstone > Shale (Bed)
Comments Thickness from stratigraphic column for southern Illinois (south of 40 degrees north latitude): Chouteau Ls (0-80’), Springville Sh (0-100’), Ft. Payne Fm (0-685’). The stratigraphic column for southern Illinois portrays the units, from oldest to youngest, as Chouteau Ls, Springville Sh, and Ft. Payne Fm (it also includes the Meppen Ls between the Chouteau Ls and Springville Sh, but the Meppen is NOT included in the unit description for Mfp).
References

Kolata, D.R., comp., 2005, Bedrock Geology of Illinois: Champaign, Ill., Illinois State Geological Survey, Illinois Map Series 14, scale 1:500,000.

NGMDB product
Counties Alexander - Hardin - Pulaski - Union