Chota Formation

Chota Formation
Stratigraphic range: Early Campanian-Late Eocene
~83–35 Ma
Type Geological formation
Sub-units Esperanza Mb.
Rentema Mb.
Fundo El Triunfo Mb.
Underlies Cajaruro Formation
Overlies Celendín Formation
Thickness 320 m (1,050 ft)
Lithology
Primary Shale, sandstone
Other Gypsum
Location
Coordinates 5°41′41″S 78°30′41″W / 5.69472°S 78.51139°W / -5.69472; -78.51139Coordinates: 5°41′41″S 78°30′41″W / 5.69472°S 78.51139°W / -5.69472; -78.51139
Approximate paleocoordinates 7°30′S 60°36′W / 7.5°S 60.6°W / -7.5; -60.6
Region Cajamarca
Country Peru
Extent Bagua Basin
Type section
Named for Chota
Named by Broggi
Location Esperanza, Cajamarca
Year defined 1942
Type locality of the Chota Formation in Peru

The Chota Formation is an Early Campanian to Late Eocene geologic formation of the Cajamarca and western Amazonas Region in northern Peru. Dinosaur remains are among the fossils that have been recovered from the formation, although none have yet been referred to a specific genus.[1] The formation was formerly named Bagua Formation.[2]

See also

References

  1. ↑ Weishampel, et al. (2004). "Dinosaur distribution." Pp. 517-607.
  2. ↑ Chacaltana et al., 2014

Bibliography

  • Chacaltana, César; Alexandra Lucytania Benites Cañote; Waldir Valdivia, and Marco Chumpitaz. 2014. La formación Chota en la Cuenca Bagua: Evaluación e implicancias del criterio de clasificación litoestratigráfico, 1-4. Congreso Peruano de Geología. Accessed 2017-06-05.
  • Weishampel, David B.; Dodson, Peter; and Osmólska, Halszka (eds.): The Dinosauria, 2nd, Berkeley: University of California Press. 861 pp.  ISBN 0-520-24209-2.

Further reading

  • Aliaga Chávez, Manuel Jesús. s.a. Estudio geológico, 1-22. UNMSM. Accessed 2017-06-05.
  • Cruzado Vásquez, Gilberto. 2009. Estudio de geología, 1-90. Gobierno regional de Cajamarca. Accessed 2017-06-05.
  • T. Mourier, P. Bengtson, M. Bonhomme, E. Buge, H. Cappetta, J.-Y. Crochet, M. Feist, K. F. Hirsch, E. Jaillard, G. Laubacher, J. P. Lefranc, M. Moullade, C. Noblet, D. Pons, J. Rey, B. Sigé, Y. Tambareau and P. Taquet. 1988. The Upper Cretaceous–Lower Tertiary marine to continental transition in the Bagua Basin, northern Peru: paleontology, biostratigraphy, radiometry, correlations. Newsletters on Stratigraphy 19(3):143-177
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