Antrim Shale

Black shale; gray shale and limestone in lower part
State Indiana
Name Antrim Shale
Geologic age Devonian
Lithologic constituents
Major
Sedimentary > Clastic > Mudstone > Shale > Black-shale
Minor
Sedimentary > Carbonate > Limestone
Sedimentary > Clastic > Mudstone > Shale
References

Gray, Henry H., Ault, Curtis, H., and Keller, Stanley, J., 1987, Bedrock geologic map of Indiana: Dept. of Natural Resources, Indiana Geological Survey, Miscellaneous Map 48, scale 1:500,000.

NGMDB product
Counties Allen - DeKalb - Elkhart - Fulton - Jasper - Kosciusko - Lake - LaPorte - Marshall - Noble - Porter - Pulaski - Saint Joseph - Starke - Whitley