Colorado Formation, Argentina

Colorado Formation
Stratigraphic range: Campanian-Maastrichtian
Type Geological formation
Overlies Paleozoic basement
Thickness 30 m (98 ft)
Lithology
Primary Sandstone
Other Conglomerate
Location
Coordinates 38°12′S 64°30′W / 38.2°S 64.5°W / -38.2; -64.5Coordinates: 38°12′S 64°30′W / 38.2°S 64.5°W / -38.2; -64.5
Approximate paleocoordinates 41°18′S 49°48′W / 41.3°S 49.8°W / -41.3; -49.8
Region La Pampa Province
Country  Argentina
Extent Colorado Basin
Type section
Named for Colorado River

The Colorado Formation is a Late Cretaceous (Campanian to Maastrichtian geologic formation that is exposed within the Colorado Basin in the southeastern part of La Pampa Province, Argentina. Fossil dinosaur eggs have been reported from the nonmarine, fluvial strata of this formation.[1][2]

Description

The formation overlies the Paleozoic basement and has an estimated thickness of 30 metres (98 ft).[3] The Colorado Formation comprises medium-grained sandstones with intercalated conglomerates with pebbly beds that can be interpreted as fluvial to alluvial deposits.[3][4]

See also

References

  1. ↑ Casadio, S., T. Manera, A. Parras, C. L. Montalvo (2002) Huevos de dinosaurios (Faveoloolithidae) del Cretácico superior de la Cuenca del Colorado, Provincia de La Pampa, Argentina. Ameghiniana. 39(3):285–293.
  2. ↑ Weishampel; et al. (2004). "Dinosaur distribution". In Weishampel, David B.; Dodson, Peter; Osmólska, Halszka. The dinosauria (2nd ed.). Berkeley: Univ. of California Press. p. 604. ISBN 0-520-24209-2.
  3. 1 2 López, 2017, p.19
  4. ↑ Hucal eggsite locality A at Fossilworks.org

Bibliography

This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.