Upper Cambrian

Sandstone, siltstone, shale, and dolostone; includes the Jordan Sandstone and St. Lawrence Formation, and the Mazomanie, Lone Rock, and Davis Formations of the Tunnel City Group.
State Minnesota
Name Upper Cambrian
Geologic age Upper Cambrian
Lithologic constituents
Major
Sedimentary > Clastic > Mudstone > Shale (Bed)
Sedimentary > Clastic > Siltstone (Bed)
Sedimentary > Clastic > Sandstone (Bed)
Minor
Sedimentary > Carbonate > Dolostone (Bed)
References

Jirsa, Mark A., Boerboom, Terrence J., Chandler, Val W., Mossler, John H., Runkel, Anthony C., and Setterholm, Dale R., 2011, S-21 Geologic Map of Minnesota-Bedrock Geology; Minnesota Geological Survey, State Map Series S-21. Scale 1:500,000.

NGMDB product
Counties Anoka - Blue Earth - Brown - Carver - Chisago - Dakota - Faribault - Fillmore - Goodhue - Hennepin - Houston - Isanti - Le Sueur - McLeod - Martin - Nicollet - Olmsted - Ramsey - Rice - Scott - Sherburne - Sibley - Wabasha - Washington - Watonwan - Winona - Wright