Fox Hills Formation
| Fox Hills Formation | |
|---|---|
| Stratigraphic range: | |
| Type | Geological formation |
| Lithology | |
| Primary | Sandstone |
| Other | Shale |
The Fox Hills Formation is a Cretaceous geologic formation in the northwestern Great Plains of North America. It is present from Alberta on the north to Colorado in the south.
Dinosaur remains are among the fossils that have been recovered from the formation, although none have yet been referred to a specific genus.[1]
Lithology
The Fox Hills Formation consists of marginal marine yellow sandstone with shale interbeds.[2] It was deposited as a regressive sequence during the retreat of the Western Interior Seaway in Late Cretacous time. It is underlain by the marine Pierre Shale in the US and by the equivalent Bearpaw Formation in Canada. The Fox Hills is overlain by continental sediments, called the Laramie Formation in the US.
See also
Footnotes
- ^ Weishampel, et al. (2004). "Dinosaur distribution." Pp. 517-607.
- ^ Lexicon of Canadian Geologic Units. "Fox Hills Formation". Retrieved 2010-02-01.
References
- Weishampel, David B.; Dodson, Peter; and Osmólska, Halszka (eds.): The Dinosauria, 2nd, Berkeley: University of California Press. 861 pp. ISBN 0-520-24209-2.
 | This article about a specific stratigraphic formation is a stub. You can help Wikipedia by expanding it. |