| Bullhead Group | |
|---|---|
| Stratigraphic range: | |
| Type | Geological formation |
| Sub-units | Gething Formation Cadomin Formation |
| Underlies | Fort St. John Group |
| Overlies | Nikanassin Formation, Fernie Group, Minnes Group, Kootenay Group |
| Thickness | up to 900 metres (2,950 ft)[1] |
| Lithology | |
| Primary | Conglomerate, sandstone, siltstone and mudstone |
| Other | Coal |
| Location | |
| Coordinates | 56°01′N 122°08′W / 56.01°N 122.14°W |
| Region |  British Columbia Alberta |
| Country |  Canada |
| Type section | |
| Named by | F.H. McLearn[2] |
Bullhead Group is a stratigraphic unit of Lower Cretaceous age in the Western Canada Sedimentary Basin of northeastern British Columbia and western Alberta.[3] It was first defined by F.H. McLearn in 1918 as the Bullhead Mountain Formation,[2] but later was upgraded to group status. It consists of the Cadomin and Gething Formations, although some early workers included the Bluesky Formation and others in the group.[4]
- ^ Cite error: The named reference
Glasswas invoked but never defined (see the help page). - ^ a b McLearn, F.H., 1923. Peace River Canyon Coal Area, British Columbia; Geological Survey of Canada, Summary Report 1922, Part B, pp. 1-46.
- ^ Canadian Society of Petroleum Geologists and Alberta Geological Survey (1994). "The Geological Atlas of the Western Canada Sedimentary Basin, Chapter 19: Cretaceous Mannville Group of the Western Canada Sedimentary Basin". Compiled by Mossop, G.D. and Shetsen, I. Archived from the original on 2016-07-01. Retrieved 2016-06-20.
- ^ Stott, D.F. 1965. Lower Cretaceous Bullhead and Fort St John Groups, between Smoky and Peace Rivers, Rocky Mountain foothills, Alberta and British Columbia. Geological Survey of Canada, Bulletin 152, 279 p. ISBN 0-660-10208-0.