Foremost Formation
| Foremost Formation | |
|---|---|
| Stratigraphic range: Campanian, | |
Outcrops of the Foremost Formation (basal sandstone and MacKay coal zone) along the Milk River at Writing-On-Stone Provincial Park | |
| Type | Geological formation |
| Unit of | Belly River Group (Judith River Group) |
| Underlies | Oldman Formation |
| Overlies | Pakowki Formation |
| Thickness | up to 170 metres (560 ft) |
| Lithology | |
| Primary | Sandstone, siltstone, mudstone |
| Other | Shale, coal |
| Location | |
| Region | Alberta |
| Country | Canada |
| Type section | |
| Named for | Foremost, Alberta |
| Named by | D.B. Dowling, 1915 |
The Foremost Formation is a stratigraphic unit of Late Cretaceous (Campanian) age that underlies much of southern Alberta, Canada. It was named for outcrops in Chin Coulee near the town of Foremost and is known primarily for its dinosaur remains and other fossils.