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dc.contributor.author
Cuitiño, José Ignacio
dc.contributor.author
Fernicola, Juan Carlos
dc.contributor.author
Kohn, Matthew J.
dc.contributor.author
Trayler, Robin
dc.contributor.author
Naipauer, Maximiliano
dc.contributor.author
Bargo, María Susana
dc.contributor.author
Kay, Richard F.
dc.contributor.author
Vizcaíno, Sergio Fabián
dc.date.available
2018-05-23T20:39:35Z
dc.date.issued
2016-10
dc.identifier.citation
Cuitiño, José Ignacio; Fernicola, Juan Carlos; Kohn, Matthew J.; Trayler, Robin; Naipauer, Maximiliano; et al.; U-Pb geochronology of the Santa Cruz Formation (early Miocene) at the Río Bote and Río Santa Cruz (southernmost Patagonia, Argentina): Implications for the correlation of fossil vertebrate localities; Pergamon-Elsevier Science Ltd; Journal of South American Earth Sciences; 70; 10-2016; 198-210
dc.identifier.issn
0895-9811
dc.identifier.uri
http://hdl.handle.net/11336/46030
dc.description.abstract
The early Miocene Santa Cruz Formation (SCF) in southern Patagonia hosts the Santacrucian South American Land Mammal Age (SALMA), whose age is known mainly from exposures along the Atlantic coast. Zircon U-Pb ages were obtained from intercalated tuffs from four inland sections of the SCF: 17.36 ±0.63 Ma for the westernmost Río Bote locality, and 17.04±0.55 Ma to 16.32± 0.62 Ma for central Río Santa Cruz localities. All ages agree with the bounding age of underlying marine units and with equivalent strata in coastal exposures. New ages and available sedimentation rates imply time spans for each section of ~18.2 to 17.36 Ma for Río Bote and 17.45 to 15.63 Ma for central Río Santa Cruz (Burdigalian). These estimates support the view that deposition of the SCF began at western localities ~1 Ma earlier than at eastern localities, and that the central Río Santa Cruz localities expose the youngest SCF in southern Santa Cruz Province. Associated vertebrate faunas are consistent with our geochronologic synthesis, showing older (Notohippidian) taxa in western localities and younger (Santacrucian) taxa in central localities. The Notohippidian fauna (19.0 to 18.0 Ma) of the western localities is synchronous with Pinturan faunas (19.0 to 18.0 Ma), but older than Santacrucian faunas of the Río Santa Cruz (17.2 to 15.6 Ma) and coastal localities (18.0 to 16.2 Ma). The Santacrucian faunas of the central Río Santa Cruz localities temporally overlap Colloncuran (15.7 Ma), Friasian (16.5 Ma), and eastern santacrucian faunas.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Pergamon-Elsevier Science Ltd
dc.rights
info:eu-repo/semantics/restrictedAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Santacrucian
dc.subject
Notohippidian
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Chronostratigraphy
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Fossil Mammals
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Meteorología y Ciencias Atmosféricas
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Ciencias de la Tierra y relacionadas con el Medio Ambiente
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CIENCIAS NATURALES Y EXACTAS
dc.title
U-Pb geochronology of the Santa Cruz Formation (early Miocene) at the Río Bote and Río Santa Cruz (southernmost Patagonia, Argentina): Implications for the correlation of fossil vertebrate localities
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2018-05-04T21:32:43Z
dc.journal.volume
70
dc.journal.pagination
198-210
dc.journal.pais
Países Bajos
dc.journal.ciudad
Amsterdam
dc.description.fil
Fil: Cuitiño, José Ignacio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico. Instituto Patagónico de Geología y Paleontología; Argentina
dc.description.fil
Fil: Fernicola, Juan Carlos. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales ; Argentina. Universidad Nacional de Luján; Argentina
dc.description.fil
Fil: Kohn, Matthew J.. Boise State University; Estados Unidos
dc.description.fil
Fil: Trayler, Robin. Boise State University; Estados Unidos
dc.description.fil
Fil: Naipauer, Maximiliano. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Estudios Andinos ; Argentina
dc.description.fil
Fil: Bargo, María Susana. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. División Paleontología Vertebrados; Argentina. Comisión de Investigaciones Científicas; Argentina
dc.description.fil
Fil: Kay, Richard F.. University of Duke; Estados Unidos
dc.description.fil
Fil: Vizcaíno, Sergio Fabián. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. División Paleontología Vertebrados; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
dc.journal.title
Journal of South American Earth Sciences
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/https://dx.doi.org/10.1016/j.jsames.2016.05.007
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0895981116300694
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