Search SEDIS
| Data sets | Publications | Expeditions | Thesaurus |
Shakopee Formation  | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Paleozoic | |
| ...Ordovician | |
| ....Lower Ordovician | |
| .....Shakopee Formation | |
| RT | Iowa |
| Illinois | |
| Wisconsin | |
| Minnesota | |
| Prairie du Chien Group | |
| SN | In Prairie du Chien Group. Overlies and interbedded with Root Valley Sandstone. N Illinois, Iowa, S Minnesota, and S Wisconsin. |