Monteith Formation
| Monteith Formation | |
|---|---|
| Stratigraphic range: Valanginian | |
| Type | Formation |
| Unit of | Minnes Group |
| Underlies | Beattie Peaks Formation |
| Overlies | Fernie Formation |
| Thickness | maximum 600 m (1,970 ft) |
| Lithology | |
| Primary | Sandstone |
| Other | Siltstone, mudstone, coal |
| Location | |
| Coordinates | Lua error in Module:Coordinates at line 489: attempt to index field 'wikibase' (a nil value). |
| Region | British Columbia Alberta |
| Country | Canada |
| Extent | Western Canadian Sedimentary Basin |
| Type section | |
| Named for | Mount Monteith |
| Named by | W.H. Mathews, 1947[1] |
Monteith Formation (Canada) | |
The Monteith Formation is a geologic formation of Early Cretaceous (Valanginian) age in the Western Canada Sedimentary Basin that consists primarily of sandstone. It is present in the northern foothills of the Canadian Rockies and the adjacent plains in northeastern British Columbia and west-central Alberta.[2][3][4]
Lithology
[edit | edit source]The Monteith Formation consists primarily of fine-grained argillaceous sandstone with interbeds of siltstone, dark grey mudstone, shale, and minor coal beds. Coarser-grained quartzose sandstones and minor quartz-pebble and chert conglomerates are present in some areas.[2]
Environment of deposition
[edit | edit source]The Monteith Formation was deposited in marine and nonmarine environments within and adjacent to the Western Interior Seaway. Depositional settings ranged from marine to shoreline, deltaic, river channel, floodplain, and swamp environments.[2]
Paleontology and age
[edit | edit source]The age of the Monach Formation formations has been determined from its fossil fauna, primarily species of the bivalve Buchia.[2]
Thickness and distribution
[edit | edit source]The Monteith Formation is present in the foothills of the Canadian Rockies and the adjacent plains from the Prophet River in northeastern British Columbia to the Berland River in west-central Alberta. It attains a maximum thickness of 600 m (1,970 ft) in the foothills of British Columbia and thins eastward.[2][4]
Relationship to other units
[edit | edit source]The Monteith Formation is the basal formation of the Minnes Group. It was deposited conformably over the marine shales of the Fernie Formation and is conformably overlain by the Beattie Peaks Formation. To the south it grades into the Nikanassin Formation.[2][4]
References
[edit | edit source]- ^ Mathews, W.H. 1947. Geology and coal resources of the Carbon Creek, Mount Bickford map area. British Columbia Department of Mines, Bulletin 24, 27 p.
- ^ a b c d e f Stott, D.F. 1998. Fernie Formation and Minnes Group (Jurassic and lowermost Cretaceous), northern Rocky Mountain foothills, Alberta and British Columbia. Geological Survey of Canada, Bulletin 516.
- ^ Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
- ^ a b c 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. Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value)..
See also
[edit | edit source]Lua error in mw.title.lua at line 392: bad argument #2 to 'title.new' (unrecognized namespace name 'Portal').
- Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
- List of fossiliferous stratigraphic units in British Columbia