| Ma Butte Formation | |
|---|---|
| Stratigraphic range: | |
| Type | Geological formation |
| Unit of | Blairmore Group |
| Underlies | Crowsnest Formation |
| Overlies | Beaver Mines Formation |
| Thickness | up to 132 metres (430 ft) |
| Lithology | |
| Primary | Sandstone, siltstone, mudstone |
| Other | Conglomerate, bentonite, tuff |
| Location | |
| Region |  Alberta |
| Country |  Canada |
| Type section | |
| Named for | Ma Butte |
| Named by | J.R. McLean |
| Year defined | 1980[1] |
The Ma Butte Formation is a stratigraphic unit of Early Cretaceous (Albian) age in the Western Canada Sedimentary Basin.[2] It was named for Ma Butte, a mountain north of Coleman, Alberta, by J.R. McLean in 1980.[1] It is present in the foothills of southwestern Alberta and it contains plant fossils.[1][3]
- ^ a b c McLean, 1980. Lithostratigraphy of the Lower Cretaceous coal-bearing sequence, foothills of Alberta. Geological Survey of Canada, Paper 80-29.
- ^ 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". compilers : Mossop, G.D. and Shetsen, I. Archived from the original on 2016-07-01. Retrieved 2016-06-20.
- ^ Glass, D.J. (editor) 1997. Lexicon of Canadian Stratigraphy, vol. 4, Western Canada including eastern British Columbia, Alberta, Saskatchewan and southern Manitoba. Canadian Society of Petroleum Geologists, Calgary, 1423 p. on CD-ROM. ISBN 0-920230-23-7.