| Scotch Grove Formation | |
| Type: | Formation |
| Age: | Silurian |
| Prilithology: | dolomite |
| Otherlithology: | Chert |
| Namedfor: | Scotch Grove Township, Jones County, Iowa |
| Region: | Iowa |
| Country: | United States |
| Underlies: | Gower Formation |
| Overlies: | Hopkinton Formation |
The Scotch Grove Formation is a geologic formation in Iowa. It preserves fossils dating back to the Silurian period.[1]