Imi-n-Ifri Formation
Appearance
Imi-n-Ifri Formation | |
---|---|
Stratigraphic range: Sinemurian | |
Type | Geological formation |
Underlies | Aganane Formation |
Lithology | |
Primary | Limestone, dolomite |
Location | |
Coordinates | 31°18′N 7°06′W / 31.3°N 7.1°W |
Approximate paleocoordinates | 24°36′N 6°48′W / 24.6°N 6.8°W |
Region | Africa |
Country | ![]() |
Extent | Ouarzazate Province |
![](http://up.wiki.x.io/wikipedia/commons/thumb/4/46/Imi_n_Ifri_%E2%B5%89%E2%B5%8E%E2%B5%89_%E2%B5%8F_%E2%B5%89%E2%B4%BC%E2%B5%94%E2%B5%89_pont_fo%C3%BB-w%C3%A5de.jpg/220px-Imi_n_Ifri_%E2%B5%89%E2%B5%8E%E2%B5%89_%E2%B5%8F_%E2%B5%89%E2%B4%BC%E2%B5%94%E2%B5%89_pont_fo%C3%BB-w%C3%A5de.jpg)
The Imi-n-Ifri Formation is a Sinemurian geologic formation outcropping about 6 kilometres (3.7 mi) from Demnate, to the east of Marrakech, Morocco. Fossil ornithopod tracks have been reported from the formation.[1]
Description
[edit]The formation comprises limestones and dolomites deposited in shallow depth of water, low-energy, marine or lagoonal to supratidal environments. The footprints appear on the surface of a vast limestone on a surface of between 8 and 9,000 square metres (86 and 96,875 sq ft). The top of the carbonate sequence is marked by a bench of yellow 'cargneule' capped by a hardground.[2]
See also
[edit]References
[edit]- ^ Weishampel, et al. (2004). "Dinosaur distribution." Pp. 517-607.
- ^ Adrar-n-Ouglagal tracksite at Fossilworks.org
Bibliography
[edit]- Weishampel, David B.; Dodson, Peter; Osmólska, Halszka (2004), The Dinosauria, 2nd edition, Berkeley: University of California Press, pp. 1–880, ISBN 0-520-24209-2, retrieved 2019-02-21
Further reading
[edit]- M. Monbaron, J. Dejax, and G. Demathieu. 1985. Longues pistes de Dinosaures bipèdes à Adrar-n-Ouglagal (Maroc) et répartition des faunes de grands Reptiles dans le domaine atlasique au cours du Mésozoïque. Bulletin du Muséum National D'Histoire Naturelle, 4e série, section A 7(3):229-242