| Interlake Formation (Group) | |
|---|---|
| Stratigraphic range: | |
| Type | Geological formation |
| Underlies | Ashern Formation |
| Overlies | Stonewall Formation |
| Thickness | up to 335 metres (1,100 ft)[1] |
| Lithology | |
| Primary | dolomite |
| Location | |
| Coordinates | 51°27′13″N 98°45′37″W / 51.4535°N 98.7603°W |
| Region | WCSB Williston Basin |
| Country |  Canada United States |
| Type section | |
| Named for | Interlake Region, Manitoba |
| Named by | A.D. Baillie, 1951 |
The Interlake Formation is a stratigraphical unit of Silurian age in the Western Canadian Sedimentary Basin.
It takes the name from the Interlake Region in Manitoba, and was first described in outcrop by A.D. Baillie in 1951.[2]