Search SEDIS
| Data sets | Publications | Expeditions | Thesaurus |
Maquoketa Formation  | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Paleozoic | |
| ...Ordovician | |
| ....Upper Ordovician | |
| .....Maquoketa Formation | |
| RT | Iowa |
| Missouri | |
| Illinois | |
| Wisconsin | |
| Minnesota | |
| SN | In Missouri, it is typically thin laminated shale interbedded with shaly limestone members. W Illinois, E Iowa, S Minnesota, E Missouri, and SW Wisconsin. |