Chorrillo Formation

Chorrillo Formation
Stratigraphic range: Maastrichtian
Type Geological formation
Underlies Calafate Formation
Overlies La Irene Formation
Thickness >50 m (160 ft)
Lithology
Primary Claystone
Location
Location Patagonia
Coordinates 49°54′S 72°30′W / 49.9°S 72.5°W / -49.9; -72.5Coordinates: 49°54′S 72°30′W / 49.9°S 72.5°W / -49.9; -72.5
Approximate paleocoordinates 51°48′S 62°12′W / 51.8°S 62.2°W / -51.8; -62.2
Region Santa Cruz Province
Country  Argentina
Extent Southeast of Viedma Lake
North of Argentino Lake
Austral Basin
Type section
Named by Arbe & Hechem
Year defined 1984

The Chorrillo Formation, also named as Chorillo Formation,[1] is a Maastrichtian geologic formation in southern Patagonia, Argentina. Dinosaur remains are among the fossils that have been recovered from the formation, although none have yet been referred to a specific genus.[2] The formation is more than 50 metres (160 ft) thick and underlies the Calafate Formation and rests on top of the La Irene Formation.[3]

See also

References

  1. ↑ Río Leona at Fossilworks.org
  2. ↑ Weishampel, et al. (2004). "Dinosaur distribution." Pp. 517-607.
  3. ↑ Marenssi et al., 2003, p.406

Bibliography

  • Marenssi, Sergio A.; Silvio Casadío, and Sergio N. Santillana. 2003. Estratigrafía y sedimentología de las unidades del Cretácico superior-Paleógeno aflorantes en la margen sureste del lago Viedma, provincia de Santa Cruz, Argentina. Revista de la Asociación Geológica Argentina 58. 403–416. Accessed 2018-08-30.
  • Weishampel, David B.; Dodson, Peter; and Osmólska, Halszka (eds.): The Dinosauria, 2nd, Berkeley: University of California Press. 861 pp.  ISBN 0-520-24209-2.

Further reading

  • J. E. Powell. 2003. Revision of South American titanosaurid dinosaurs: palaeobiological, palaeobiogeographical and phylogenetic aspects. Records of the Queen Victoria Museum Launceston 111:1-173
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