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Cerro Carnerero Formation

Coordinates: 44°00′S 69°30′W / 44.0°S 69.5°W / -44.0; -69.5
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Cerro Carnerero Formation
Stratigraphic range: Toarcian-Bajocian
~180–170 Ma
TypeGeological formation
Unit ofLonco Trapial Group
UnderliesCañadón Puelman Formation
OverliesLos Tobianos Formation
Thickness440 m (1,440 ft)
Lithology
PrimaryClaystone, tuff
OtherConglomerate
Location
Coordinates44°00′S 69°30′W / 44.0°S 69.5°W / -44.0; -69.5
Approximate paleocoordinates41°48′S 28°30′W / 41.8°S 28.5°W / -41.8; -28.5
RegionChubut Province
CountryArgentina
ExtentGolfo San Jorge Basin
Type section
Named forCerro Carnerero
Named byHerbst
Year defined1966
Cerro Carnerero Formation is located in Argentina
Cerro Carnerero Formation
Cerro Carnerero Formation (Argentina)

The Cerro Carnerero Formation is a geological formation of the Golfo San Jorge Basin in Chubut Province, Patagonia, Argentina.[1]

Description

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The claystones and tuffs of the approximately 440 metres (1,440 ft) thick formation,[2] belonging to the Lonco Trapial Group,[3] were deposited in a fluvial environment.[4]

The formation dates back to the Middle Jurassic (Toarcian stage) and has preserved fossils of Cladophlebis oblonga,[5] and Amygdalodon patagonicus.[6]

The fossiliferous beds rest on Liassic beds with Harpoceras subplanatum, and below the Middle to Upper Jurassic Porphyritic Series. Called the "Cerro Carnerero" beds, Rauhut, 2008, assigned the Cerro Carnerero to the Toarcian to Bajocian.[7]

Lithology

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The formation comprises sandy tuffs and bluish gray claystones, which form part of a continental sedimentary series mixed with porphyritic conglomerates with partly encrusted round pebbles, and bluish gray clays with sandy intercalations and clays in lesser amounts.[7]

Fossil content

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Vertebrate fauna

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Dinosaurs
Taxa Presence Notes Images
Genus:
  1. A. patagonicus
Chubut Province "Partial skeleton"[6][8]

Arthropods

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See also

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References

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  1. ^ Cañadón Puelman at Fossilworks.org
  2. ^ Cortés, 1986, p.50
  3. ^ Cortés, 1986, p.49
  4. ^ Cortés, 1986, p.53
  5. ^ Cortés, 1986, p.52
  6. ^ a b Weishampel et al., 2004, p.542
  7. ^ a b c Cañadón Puelman, East Slope, Sierra Pampa de Agnía at Fossilworks.org
  8. ^ "Table 13.1," in Weishampel et al., 2004, p.263

Bibliography

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  • Cortés, José María (1986), Estratigrafía y tectónica de la región central de la Provincia de Chubut, República Argentina (PhD thesis) (PDF), Universidad de Buenos Aires, pp. 1–242, retrieved 2019-02-16
  • Weishampel, David B.; Dodson, Peter; Osmólska, Halszka (2004), The Dinosauria, 2nd edition, Berkeley: University of California Press, pp. 1–880, ISBN 0-520-24209-2, retrieved 2019-02-21

Further reading

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  • Cabrera, Á (1947), "Un saurópodo nuevo del Jurásico de Patagonia", Instituto del Museo de la Universidad Nacional de la Plata, Notas del Mueso de la Plata, Paleontología, 12: 1–17