Kaskapau Formation
| Kaskapau Formation | |
|---|---|
| Stratigraphic range: Turonian to Coniacian | |
| Type | Geological formation |
| Unit of | Smoky River Group |
| Sub-units | Doe Creek Member, Pouce Coupe Member, Wartenbe Member, Tuskoola Member |
| Underlies | Bad Heart Formation, Cardium Formation |
| Overlies | Dunvegan Formation |
| Thickness | up to Template:M to ft |
| Lithology | |
| Primary | Carbonaceous shale |
| Other | Sandstone tongues and lenticles, volcanic ash |
| Location | |
| Coordinates | 55°55′N 118°38′W / 55.917°N 118.633°W |
| Region | Western Canadian Sedimentary Basin |
| Country |  Canada |
| Type section | |
| Named by | McLearn, 1926[1] |
The Kaskapau Formation is a geological formation in North America whose strata date back to the Late Cretaceous. Dinosaur remains are among the fossils that have been recovered from the formation.[2]
Geographical distribution
The formation is Template:M to ft thick in the Peace River and Smoky River area, and thickens up to Template:M to ft[3] in the foothills of the Northern Rocky Mountains in British Columbia. It is exposed along the Peace River near Dunvegan, as well as in the Smoky River area.
The formation is part of the Smoky River Group, and is conformably overlain by the Bad Heart Formation in the western area, and unconformity by the Cardium Formation in the Pouce Coupe River area. It is conformable underlain by the Dunvegan Formation.[3]
The Kaskapau Formation is equivalent to the Colorado Group shale.
Lithology
The Kaskapau Formation is represented mostly by dark grey shale, with sandstone tongues and lentils at the base (Doe Creek Member, Pouce Coupe Member). Thin volcanic ash layers may occur in the British Columbia foothills.
Vertebrate paleofauna
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See also
References
- ^ McLearn, F.H., 1926. "New species from the Coloradoan of lower Smoky and lower Peace rivers, Alberta"; Geological Survey of Canada, Summary Report 1926, Part B, pp. 117-127.
- ^ Weishampel, David B; et al (2004). "Dinosaur distribution (Late Cretaceous, North America)." In: Weishampel, David B.; Dodson, Peter; and Osmólska, Halszka (eds.): The Dinosauria, 2nd, Berkeley: University of California Press. Pp. 574-588. ISBN 0-520-24209-2.
- ^ a b Lexicon of Canadian Geological Units. "Kaskapau Formation". Retrieved 2009-02-06.
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