Los Blanquitos Formation
The Los Blanquitos Formation is a geological formation in Salta Province, Argentina whose strata date back to the Campanian. Dinosaur remains are among the fossils that have been recovered from the formation.[1] The formation comprises friable, micaceous, grayish-red sandstones with quartz pebbles furrowed with small carbonate veins. In the base of this layer the remains of a titanosaurid dinosaur were discovered. Above the layer with bones appears a lens of thick, greenish-gray, calcareous, very hard sandstone with pebbles and gravel. The bones were covered by a "halo" of the same rock but of greenish or grayish color, especially visible because the normal sediment is red. The bed thickness is 1.5 metres (4.9 ft).[2]
| Los Blanquitos Formation Stratigraphic range: Campanian ~84–71 Ma | |
|---|---|
| Type | Geological formation |
| Unit of | Salta Group |
| Underlies | Lecho Formation |
| Overlies | Las Curtiembres Formation |
| Lithology | |
| Primary | Sandstone |
| Location | |
| Coordinates | 24.3°S 65.3°W |
| Approximate paleocoordinates | 27.6°S 47.5°W |
| Region | Salta Province |
| Country |  Argentina |
| Extent | Salta Basin |
  Los Blanquitos Formation (Argentina) | |
Vertebrate paleofauna
See also
- List of dinosaur-bearing rock formations
References
- 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.
- Arroyo El Morterito at Fossilworks.org
- "Table 10.1," in Weishampel, et al. (2004). Page 199.
Further reading
- J.F. Bonaparte and G. Bossi. 1967. Sobre la presencia de dinosaurios en la Formación Pirgua del Grupo Salta y su significado cronologico [On the presence of dinosaurs in the Pirgua Formation of the Salta Group and its chronologic significance]. Acta Geologica Lilloana 9:25-44
- Powell, J.E. 2003. Revision of South American titanosaurid dinosaurs: palaeobiological, palaeobiogeographical and phylogenetic aspects. Records of the Queen Victoria Museum Launceston 111:1-173
- Powell, J.E. 1979. Sobre una asociacion de dinosaurios y otras evidencias de vertebrados del Cretacico superior de la region de La Candelaria, Prov. de Salta, Argentina. Ameghiniana 16: pp. 191–204
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