Colorado Formation, Argentina

Short description: Geologic formation in 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; -64.5
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

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]

## Contents

* 1 Description
* 2 See also
* 3 References
* 3.1 Bibliography

## 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 (2004). "Dinosaur distribution". in Weishampel, David B.; Dodson, Peter; Osmólska, Halszka. The dinosauria (2nd ed.). Berkeley: Univ. of California Press. pp. 604. ISBN 978-0-520-24209-8. https://archive.org/details/dinosauriandedit00weis.
3. ↑ 3.0 3.1 López, 2017, p.19
4. ↑ Hucal eggsite locality A at Fossilworks.org

### Bibliography

* López, Gisela Romina. 2017. Sedimentología e inferencias ambientales de los depósitos de la Formación Colorado (Campaniano-Maastrichtiano), Departamento Hucal, Provincia de La Pampa (BSc. thesis), 1–95. Universidad Nacional de La Pampa. Accessed 2018-09-07.

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