Mostrar el registro sencillo del ítem
dc.contributor.author
Clyde, W. C.
dc.contributor.author
Krause, Javier Marcelo
![Se ha confirmado la validez de este valor de autoridad por un usuario](/themes/CONICETDigital/images/authority_control/invisible.gif)
dc.contributor.author
de Benedetti, Facundo
![Se ha confirmado la validez de este valor de autoridad por un usuario](/themes/CONICETDigital/images/authority_control/invisible.gif)
dc.contributor.author
Ramezani, Jahandar
![Se ha confirmado la validez de este valor de autoridad por un usuario](/themes/CONICETDigital/images/authority_control/invisible.gif)
dc.contributor.author
Cúneo, Néstor Rubén
![Se ha confirmado la validez de este valor de autoridad por un usuario](/themes/CONICETDigital/images/authority_control/invisible.gif)
dc.contributor.author
Gandolfo, Maria Alejandra
![Se ha confirmado la validez de este valor de autoridad por un usuario](/themes/CONICETDigital/images/authority_control/invisible.gif)
dc.contributor.author
Haber, P.
dc.contributor.author
Whelan, C.
dc.contributor.author
Smith, T.
dc.date.available
2022-08-22T19:53:57Z
dc.date.issued
2021-10
dc.identifier.citation
Clyde, W. C.; Krause, Javier Marcelo; de Benedetti, Facundo; Ramezani, Jahandar; Cúneo, Néstor Rubén; et al.; New South American record of the Cretaceous–Paleogene boundary interval (La Colonia Formation, Patagonia, Argentina); Elsevier; Cretaceous Research; 126; 10-2021; 1-17
dc.identifier.issn
0195-6671
dc.identifier.uri
http://hdl.handle.net/11336/166286
dc.description.abstract
The La Colonia Formation is an Upper Cretaceous to Paleogene shallow marine sedimentary unit in Chubut Province (Patagonia), Argentina that preserves important vertebrate and plant fossils. Despite good exposures and significant paleontological investigation, the precise age of the La Colonia Formation and its stratigraphic relationship to the Cretaceous–Paleogene (K–Pg) boundary are not well understood. The K-Pg boundary is associated with one of the largest mass extinctions in Earth's history yet there are few continental stratigraphic records of the boundary in South America, resulting in poor understanding of its effects there. This study combines magnetostratigraphy, detrital zircon uranium–lead (U–Pb) geochronology, and preliminary palynological results to constrain the age of the La Colonia Formation and its fossils more precisely and determine whether it preserves the K–Pg boundary. U–Pb ages of detrital zircons from the directly underlying Puntudo Chico Formation indicate that the base of the La Colonia Formation is younger than ~71.7 Ma. The studied palynological assemblage includes Quadraplanus brossus, which is restricted to the Maastrichtian in other southern hemisphere records. Paleomagnetic results show that the ~125 m Cerro Buitre Norte section of the La Colonia Formation and the overlying Cerro Bororó Formation has dominantly normal polarity except for a ~5 m zone of reversed polarity near the base that is interpreted to correlate to Chron C30R of the Geomagnetic Polarity Timescale (GPTS), and a ~13 m zone of reversed polarity near the top of the La Colonia Formation that is interpreted to correlate to Chron C29R. The presence of a magnetozone correlated to C29R in the La Colonia Formation suggests that it preserves the K–Pg boundary, making it an important target for continued paleontological collection to better understand the K–Pg extinction and recovery dynamics in South America.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Elsevier
![Se ha confirmado la validez de este valor de autoridad por un usuario](/themes/CONICETDigital/images/authority_control/invisible.gif)
dc.rights
info:eu-repo/semantics/restrictedAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
CRETACEOUS–PALEOGENE BOUNDARY
dc.subject
GEOCHRONOLOGY
dc.subject
PALYNOMORPHS
dc.subject
PATAGONIA
dc.subject
SOUTH AMERICA
dc.subject
STRATIGRAPHY
dc.subject.classification
Geociencias multidisciplinaria
![Se ha confirmado la validez de este valor de autoridad por un usuario](/themes/CONICETDigital/images/authority_control/invisible.gif)
dc.subject.classification
Ciencias de la Tierra y relacionadas con el Medio Ambiente
![Se ha confirmado la validez de este valor de autoridad por un usuario](/themes/CONICETDigital/images/authority_control/invisible.gif)
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
![Se ha confirmado la validez de este valor de autoridad por un usuario](/themes/CONICETDigital/images/authority_control/invisible.gif)
dc.title
New South American record of the Cretaceous–Paleogene boundary interval (La Colonia Formation, Patagonia, Argentina)
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2022-08-19T15:32:51Z
dc.journal.volume
126
dc.journal.pagination
1-17
dc.journal.pais
Países Bajos
![Se ha confirmado la validez de este valor de autoridad por un usuario](/themes/CONICETDigital/images/authority_control/invisible.gif)
dc.journal.ciudad
Amsterdam
dc.description.fil
Fil: Clyde, W. C.. University of New Hampshire; Estados Unidos
dc.description.fil
Fil: Krause, Javier Marcelo. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Museo Paleontológico Egidio Feruglio; Argentina. Universidad Nacional de Río Negro; Argentina
dc.description.fil
Fil: de Benedetti, Facundo. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Museo Paleontológico Egidio Feruglio; Argentina
dc.description.fil
Fil: Ramezani, Jahandar. Massachusetts Institute of Technology; Estados Unidos
dc.description.fil
Fil: Cúneo, Néstor Rubén. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Museo Paleontológico Egidio Feruglio; Argentina
dc.description.fil
Fil: Gandolfo, Maria Alejandra. Cornell University; Estados Unidos
dc.description.fil
Fil: Haber, P.. University of New Hampshire; Estados Unidos
dc.description.fil
Fil: Whelan, C.. University of New Hampshire; Estados Unidos
dc.description.fil
Fil: Smith, T.. University of New Hampshire; Estados Unidos
dc.journal.title
Cretaceous Research
![Se ha confirmado la validez de este valor de autoridad por un usuario](/themes/CONICETDigital/images/authority_control/invisible.gif)
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0195667121001361
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.cretres.2021.104889
Archivos asociados