Stony Mountain Formation
| Stony Mountain Formation | |
|---|---|
| Stratigraphic range: | |
| Type | Geological formation |
| Underlies | Stonewall Formation |
| Overlies | Red River Formation |
| Thickness | up to 45 metres (150 ft) |
| Lithology | |
| Primary | dolomite, shale |
| Other | Anhydrite, limestone |
| Location | |
| Coordinates | 49°55′06″N 97°31′35″W / 49.9184°N 97.5265°W |
| Region | WCSB Williston Basin |
| Country | Canada United States |
| Type section | |
| Named for | Stony Mountain, Manitoba |
| Named by | D.B. Dowling, 1900 |
The Stony Mountain Formation is a stratigraphic unit of Ashgill age in the Western Canadian Sedimentary Basin.
It takes the name from the community Stony Mountain, Manitoba, and was first described in the town quarry by D.B. Dowling in 1900.