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dc.contributor.author
Woodburne, Michael O.
dc.contributor.author
Goin, Francisco Javier
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Raigemborn, María Sol
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Heizler, Matt
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Gelfo, Javier Nicolás
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Oliveira, Édison V.
dc.date.available
2019-07-04T19:01:34Z
dc.date.issued
2014-05
dc.identifier.citation
Woodburne, Michael O.; Goin, Francisco Javier; Raigemborn, María Sol; Heizler, Matt; Gelfo, Javier Nicolás; et al.; Revised timing of the South American early Paleogene land mammal ages; Pergamon-Elsevier Science Ltd; Journal of South American Earth Sciences; 54; 5-2014; 109-119
dc.identifier.issn
0895-9811
dc.identifier.uri
http://hdl.handle.net/11336/79162
dc.description.abstract
A new Ar/Ar date on the Las Flores Tuff (Río Chico Group, Las Flores Fm., central Patagonia, Argentina) yielded an age of 49.512±0.019Ma. This tuff, which stratigraphically overlies the mammal-bearing deposits that produced the Las Flores fauna, helps constrain the age of the Itaboraian SALMA [South American Land Mammal Age] to which that fauna is referred. The new data also have implications for the age of succeeding mammal biochrons, such as the Riochican and "Sapoan" which are revised to being somewhat younger than previously interpreted. Although closer in age than formerly interpreted, they still are biotically distinct. Concomitant evaluations suggest that the Itaboraian SALMA is perhaps more contemporary with the EECO (Early Eocene Climatic Optimum) than previously considered. The Riochican may be interpreted as post-EECO, with its cooler climate consistent in that regard. A recent reconsideration of the chronology of elements of the Salamanca Formation resulted in the downward revision of the ages of the Peligran SALMA and the Carodnia Zone biochrons. These operations, together with our results, reflect a 9 m.y. gap in the late Paleocene and early Eocene land mammal record in South America.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Pergamon-Elsevier Science Ltd
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Eocene
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Itaboraian Age
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Las Flores Formation
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Paleogene
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Patagonia
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South America
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Geología
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Ciencias de la Tierra y relacionadas con el Medio Ambiente
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CIENCIAS NATURALES Y EXACTAS
dc.title
Revised timing of the South American early Paleogene land mammal ages
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2019-06-14T18:42:59Z
dc.journal.volume
54
dc.journal.pagination
109-119
dc.journal.pais
Estados Unidos
dc.description.fil
Fil: Woodburne, Michael O.. Museum of Northern Arizona; Estados Unidos
dc.description.fil
Fil: Goin, Francisco Javier. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. División Paleontología Vertebrados; Argentina
dc.description.fil
Fil: Raigemborn, María Sol. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigaciones Geológicas. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Centro de Investigaciones Geológicas; Argentina
dc.description.fil
Fil: Heizler, Matt. New Mexico Geochronological Research Laboratory; Estados Unidos
dc.description.fil
Fil: Gelfo, Javier Nicolás. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. División Paleontología Vertebrados; Argentina
dc.description.fil
Fil: Oliveira, Édison V.. Universidade Federal de Pernambuco; Brasil
dc.journal.title
Journal of South American Earth Sciences
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.jsames.2014.05.003
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0895981114000649
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