Stonington Formation

Stonington Formation
State Michigan
Name Stonington Formation
Geologic age Late Ordovician
Lithologic constituents
Major
Sedimentary > Carbonate > Limestone (Bed)
Sedimentary > Clastic > Mudstone > Shale (Bed)
References

Reed, Robert C., and Daniels, Jennifer (compilers), 1987, Bedrock geology of northern Michigan: Geological Survey Division, Michigan Dept. of Natural Resources, scale 1:500,000.

NGMDB product
Counties Chippewa - Delta - Luce - Mackinac - Schoolcraft