Colorado Formation, Argentina Explained

Colorado Formation
Type:Geological formation
Period:Maastrichtian
Prilithology:Sandstone
Otherlithology:Conglomerate
Namedfor:Colorado River
Region:La Pampa Province
Country:Argentina
Coordinates:-38.2°N -64.5°W
Paleocoordinates:-41.3°N -49.8°W
Overlies:Paleozoic basement
Thickness:30m (100feet)
Extent:Colorado Basin

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 of Sphaerovum erbeni 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 30m (100feet).[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

Bibliography

Notes and 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. Book: Weishampel . Dinosaur distribution . David B. . Weishampel. Peter. Dodson. Halszka. Osmólska. The dinosauria. limited . 2004. Univ. of California Press. Berkeley. 978-0-520-24209-8. 2nd . 604. etal.
  3. López, 2017, p.19
  4. http://www.fossilworks.org/cgi-bin/bridge.pl?a=collectionSearch&collection_no=45900 Hucal eggsite locality A