Mercedes Formation, Uruguay

Mercedes Formation
Stratigraphic range: Campanian-Maastrichtian
~84–66 Ma

PreЄ

Type| Geological formation
Underlies| Asencio Formation
Overlies| Guichón Formation
Lithology
Primary| Sandstone
Location
Coordinates|  [ ⚑ ] : 33°24′S 58°18′W﻿ / ﻿33.4°S 58.3°W﻿ / -33.4; -58.3
Paleocoordinates|  [ ⚑ ] 37°18′S 41°24′W﻿ / ﻿37.3°S 41.4°W﻿ / -37.3; -41.4
Region| Río Negro & Soriano Departments
Country| Uruguay
Extent| Norte Basin
Type section
Named for| Mercedes, Uruguay

Mercedes Formation, Uruguay (Uruguay)

The Mercedes Formation is a Late Cretaceous (Campanian to Maastrichtian) geologic formation of the Norte Basin in Uruguay. Ichnofossils (such as Teisseirei, Uruguay and Monesichnus)[1] and fossil dinosaur eggs have been reported from the formation.[2] The formation that reaches a thickness of about 100 metres (330 ft),[3] overlies the Guichón Formation and is overlain by the Asencio Formation.[4]

## Contents

* 1 See also
* 2 References
* 2.1 Bibliography
* 3 Further reading

## See also

* List of dinosaur-bearing rock formations
* List of stratigraphic units with dinosaur trace fossils
* Dinosaur eggs
* List of fossiliferous stratigraphic units in Uruguay

## References

1. ↑ Novo Buess, Anaclara (2020). "Trabajo final de licenciatura en geología: "Mapa geológico de la región al sur de la ciudad de Mercedes y caracterización litológica de la formación Asencio"" (in es). https://www.colibri.udelar.edu.uy/jspui/bitstream/20.500.12008/29508/1/uy24-19957.pdf.
2. ↑ Weishampel et al., 2004, pp.517-607
3. ↑ Tofalo et al., 2011, p.616
4. ↑ Tofalo et al., 2011, p.617

### Bibliography

* Tófalo, Ofelia; Pazos, Pablo J.; Sánchez Bettucci, Leda (2011), "Estudio composicional de sedimentitas silicoclásticas y paleosuelos de la Formación Mercedes (Cretácico Superior), Uruguay", Revista de la Asociación Geológica Argentina 68: 615–626, https://www.researchgate.net/publication/272352483, retrieved 2020-08-23
* 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, https://books.google.com/books?id=vtZFDb_iw40C, retrieved 2019-02-21

## Further reading

* G. Faccio. 1994. Dinosaurian eggs from the Upper Cretaceous of Uruguay. In K. Carpenter, K. F. Hirsch & J. R. Horner (eds.), Dinosaur Eggs and Babies 47-55

Template:Stratigraphic formations of Uruguay

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