| State | Wisconsin |
|---|---|
| Name | Prairie du Chien Group |
| Geologic age | Ordovician |
| Lithologic constituents |
Major
Sedimentary > Carbonate > Dolostone (Bed)
Minor
Sedimentary > Clastic > Sandstone (Bed)
Sedimentary > Clastic > Mudstone > Shale (Bed)
|
| Comments | On original paper map (WI001), the unit is Opc. The digital file (WI004) symbol is Op. |
| References | Cannon, W.F., Kress, T.H., Sutphin, D.M., Morey, G.B., Meints, Joyce, and Barber-Delach, Robert, 1997, Digital Geologic Map and mineral deposits of the Lake Superior Region, Minnesota, Wisconsin, Michigan: USGS Open-File Report 97-455 (version 3, Nov. 1999), scale 1:500,000.https://pubs.er.usgs.gov/publication/ofr97455 Mudrey, M.G., Jr., Brown, B.A., and Greenberg, J.K., 1982, Bedrock Geologic Map of Wisconsin: University of Wisconsin-Extension, Geological and Natural History Survey, scale 1:1,000,000. |
| NGMDB product | |
| Counties | Buffalo - Columbia - Crawford - Dane - Dodge - Dunn - Fond du Lac - Grant - Green - Green Lake - Iowa - Jefferson - Juneau - La Crosse - Lafayette - Marinette - Monroe - Oconto - Outagamie - Pepin - Pierce - Polk - Portage - Richland - Rock - Saint Croix - Sauk - Shawano - Trempealeau - Vernon - Waupaca - Winnebago - Wood |