Colorado Formation, Argentina

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For other uses, see Colorado Formation.
Colorado Formation
Stratigraphic range: Campanian-Maastrichtian
TypeGeological formation
OverliesPaleozoic basement
Thickness30 m (98 ft)
Lithology
PrimarySandstone
OtherConglomerate
Location
Coordinates38°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 paleocoordinates41°18′S 49°48′W / 41.3°S 49.8°W / -41.3; -49.8
RegionLa Pampa Province
Country Argentina
ExtentColorado Basin
Type section
Named forColorado River
Colorado Formation, Argentina is located in Argentina
Colorado Formation, Argentina
Colorado Formation, Argentina (Argentina)

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 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[]

  • List of dinosaur-bearing rock formations
  • List of stratigraphic units with dinosaur trace fossils#Eggs or nests

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 (eds.). The dinosauria (2nd ed.). Berkeley: Univ. of California Press. pp. 604. ISBN 978-0-520-24209-8.
  3. ^ a b López, 2017, p.19
  4. ^ Hucal eggsite locality A at Fossilworks.org

Bibliography[]

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