La Quinta Formation
This article is about Venezuelan formation. For the amber bearing Mexican formation, see La Quinta Formation (Mexico).
| La Quinta Formation Stratigraphic range: Jurassic ~200–160 Ma | |
|---|---|
 | |
| Type | Geological formation |
| Underlies | Río Negro Formation |
| Overlies | Mucuchachi Formation |
| Thickness | up to 11,000 feet (3,350 m) |
| Lithology | |
| Primary | Sandstone |
| Other | Tuff, Conglomerate |
| Location | |
| Coordinates | 8°09′N 72°01′W / 8.15°N 72.02°W |
| Region | Cordillera de Mérida and Serranía del Perijá |
| Country | Venezuela |
The La Quinta Formation is a Mesozoic geologic formation which crops out in the Cordillera de Mérida and Serranía del Perijá, Venezuela. At its type locality near La Grita, it consists of a basal dacitic tuff followed by interlayered sandstones, tuffs, siltstones and rare limestones.[1] Dinosaur remains including Laquintasaura and Tachiraptor, are among the fossils that have been recovered from the formation.[2]
Fossil associations suggest that the La Quinta Formation is of Early - Middle Jurassic age.[3]
See also
Footnotes
References
- Barrett, P. M., R. J. Butler, S. C. Moore-Fay, F. E. Novas, J. M. Moody, J. M. Clark, and M. R. Sänchez-Villagra. ‘Dinosaur Remains from the La Quinta Formation (Lower or Middle Jurassic) of the Venezuelan Andes’. Paläontologische Zeitschrift 82, no. 2 (2008): 163–177.
- 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 is issued from Wikipedia - version of the Saturday, April 02, 2016. The text is available under the Creative Commons Attribution/Share Alike but additional terms may apply for the media files.