| Quiriquina Formation | |
|---|---|
| Stratigraphic range: Late Maastrichtian | |
| Type | Geological formation |
| Unit of | Arauco Group |
| Underlies | Lebu Group |
| Overlies | Granitic rocks |
| Lithology | |
| Primary | Sandstone |
| Other | Conglomerate |
| Location | |
| Coordinates | 33°30′S 71°42′W / 33.5°S 71.7°W |
| Approximate paleocoordinates | 35°36′S 59°12′W / 35.6°S 59.2°W |
| Region | Bío Bío, Concepción & Valparaíso Regions |
| Country |  Chile |
| Extent | Arauco Basin |
| Type section | |
| Named for | Quiriquina Island |
| Named by | Biró-Bagóczky |
| Year defined | 1982 |
  Quiriquina Formation (Chile) | |
The Quiriquina Formation is a geological formation in Chile whose strata date back to the Late Cretaceous. Dinosaur remains are among the fossils that have been recovered from the formation.[1] The glauconitic sandstones and conglomerates of the formation were deposited in a marine environment.[2]
- ^ Weishampel, David B; et al. (2004). "Dinosaur distribution (Late Cretaceous, South America)." In: Weishampel, David B.; Dodson, Peter; and Osmólska, Halszka (eds.): The Dinosauria, 2nd, Berkeley: University of California Press. Pp. 600-604. ISBN 0-520-24209-2.
- ^ Cocholgüe village, sea coast at Fossilworks.org