Blairmore Group
| Blairmore Group | |
|---|---|
| Stratigraphic range: Early Cretaceous | |
| Type | Group |
| Sub-units | Cadomin Formation, Gladstone Formation, Beaver Mines Formation, Ma Butte Formation |
| Underlies | Crowsnest Formation, Alberta Group |
| Overlies | Kootenay Group |
| Thickness | up to 2,000 m (6,560 ft) |
| Lithology | |
| Primary | Sandstone, siltstone, mudstone |
| Other | Conglomerate, limestone |
| Location | |
| Region | Alberta, British Columbia |
| Country | Canada |
| Type section | |
| Named for | Blairmore, Alberta |
| Named by | W.W. Leach, 1914 |
The Blairmore Group, originally named the Blairmore Formation, is a geologic unit of Early Cretaceous age in the Western Canada Sedimentary Basin that is present in southwestern Alberta and southeastern British Columbia. It is subdivided into four formations: Cadomin Formation, Gladstone, Beaver Mines and Ma Butte, all of which are defined by type sections, most of which contain plant fossils. In some areas the Blairmore contains significant reservoirs of natural gas.