New age constraints for the Salamanca Formation and lower Río Chico Group in the western San Jorge Basin, Patagonia, Argentina: Implications for cretaceous-paleogene extinction rec...

Autores: Clyde, William C.; Wilf, Peter; Iglesias, Ari; Slingerland, Rudy L.; Barnum, Timothy; Bijl, Peter K.; Bralower, Timothy J.; Brinkhuis, Henk; Comer, Emily E.; Huber, Brian T.; Ibañez Mejia, Mauricio; Jicha, Brian R.; Krause, Javier Marcelo; Schuet, Jonathan D.; Singer, Bradley S.; Raigemborn, María Sol; Schmitz, Mark D.; Sluijs, Appy; Zamaloa, María del Carmen
Año de publicación: 2014
Idioma: inglés
Tipo de recurso: artículo
Estado: versión publicada
Descripción: The Salamanca Formation of the San Jorge Basin (Patagonia, Argentina) preserves critical records of Southern Hemisphere Paleocene biotas, but its age remains poorly resolved, with estimates ranging from Late Cretaceous to middle Paleocene. We report a multi-disciplinary geochronologic study of the Salamanca Formation and overlying Río Chico Group in the western part of the basin. New constraints include (1) an 40Ar/39Ar age determination of 67.31 ± 0.55 Ma from a basalt flow underlying the Salamanca Formation, (2) micropaleontological results indicating an early Danian age for the base of the Salamanca Formation, (3) laser ablation HR-MC-ICP-MS (high resolutionmulti collector-inductively coupled plasmamass spectrometry) U-Pb ages and a highresolution TIMS (thermal ionization mass spectrometry) age of 61.984 ± 0.041(0.074) [0.100] Ma for zircons from volcanic ash beds in the Peñas Coloradas Formation (Río Chico Group), and (4) paleomagnetic results indicating that the Salamanca Formation in this area is entirely of normal polarity, with reversals occurring in the Río Chico Group. Placing these new age constraints in the context of a sequence stratigraphic model for the basin, we correlate the Salamanca Formation in the study area to Chrons C29n and C28n, with the Banco Negro Inferior (BNI), a mature widespread fossiliferous paleosol unit at the top of the Salamanca Formation, corresponding to the top of Chron C28n. The diverse paleo botanical assemblages from this area are here assigned to C28n (64.67- 63.49 Ma), ̃2-3 million years older than previously thought, adding to growing evidence for rapid Southern Hemisphere floral recovery after the Cretaceous-Paleogene extinction. Important Peligran and "Carodnia" zone vertebrate fossil assemblages from coastal BNI and Peñas Coloradas exposures are likely older than previously thought and correlate to the early Torrejonian and early Tiffanian North American Land Mammal Ages, respectively.
Fil: Clyde, William C.. University of New Hampshire; Estados Unidos
Fil: Wilf, Peter. State University of Pennsylvania; Estados Unidos
Fil: Iglesias, Ari. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Instituto de Investigaciones en Biodiversidad y Medioambiente. Universidad Nacional del Comahue. Centro Regional Universidad Bariloche. Instituto de Investigaciones en Biodiversidad y Medioambiente; Argentina
Fil: Slingerland, Rudy L.. University of Pennsylvania; Estados Unidos
Fil: Barnum, Timothy. University of New Hampshire; Estados Unidos
Fil: Bijl, Peter K.. University of Utrecht; Países Bajos
Fil: Bralower, Timothy J.. State University of Pennsylvania; Estados Unidos
Fil: Brinkhuis, Henk. University of Utrecht; Países Bajos
Fil: Comer, Emily E.. State University of Pennsylvania; Estados Unidos
Fil: Huber, Brian T.. Smithsonian Institution; Estados Unidos
Fil: Ibañez Mejia, Mauricio. University of Arizona; Estados Unidos
Fil: Jicha, Brian R.. University of Wisconsin; Estados Unidos
Fil: Krause, Javier Marcelo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentina. Museo Paleontológico Egidio Feruglio; Argentina
Fil: Schuet, Jonathan D.. State University of Pennsylvania; Estados Unidos
Fil: Singer, Bradley S.. University of Wisconsin; Estados Unidos
Fil: Raigemborn, María Sol. Universidad Nacional de La Plata; Argentina
Fil: Schmitz, Mark D.. University of Idaho; Estados Unidos
Fil: Sluijs, Appy. University of Utrecht; Países Bajos
Fil: Zamaloa, María del Carmen. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Ecología, Genética y Evolución; Argentina
Materia: Paleogene
South America
Stratigraphy
Fossils
Geochronology
Paleomagnetism
Nivel de accesibilidad: acceso abierto
Condiciones de uso: https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
Institución: Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador: oai:ri.conicet.gov.ar:11336/80135

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repository_id_str	3498
network_name_str	CONICET Digital (CONICET)
spelling	New age constraints for the Salamanca Formation and lower Río Chico Group in the western San Jorge Basin, Patagonia, Argentina: Implications for cretaceous-paleogene extinction recovery and land mammal age correlationsClyde, William C.Wilf, PeterIglesias, AriSlingerland, Rudy L.Barnum, TimothyBijl, Peter K.Bralower, Timothy J.Brinkhuis, HenkComer, Emily E.Huber, Brian T.Ibañez Mejia, MauricioJicha, Brian R.Krause, Javier MarceloSchuet, Jonathan D.Singer, Bradley S.Raigemborn, María SolSchmitz, Mark D.Sluijs, AppyZamaloa, María del CarmenPaleogeneSouth AmericaStratigraphyFossilsGeochronologyPaleomagnetismhttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1The Salamanca Formation of the San Jorge Basin (Patagonia, Argentina) preserves critical records of Southern Hemisphere Paleocene biotas, but its age remains poorly resolved, with estimates ranging from Late Cretaceous to middle Paleocene. We report a multi-disciplinary geochronologic study of the Salamanca Formation and overlying Río Chico Group in the western part of the basin. New constraints include (1) an 40Ar/39Ar age determination of 67.31 ± 0.55 Ma from a basalt flow underlying the Salamanca Formation, (2) micropaleontological results indicating an early Danian age for the base of the Salamanca Formation, (3) laser ablation HR-MC-ICP-MS (high resolutionmulti collector-inductively coupled plasmamass spectrometry) U-Pb ages and a highresolution TIMS (thermal ionization mass spectrometry) age of 61.984 ± 0.041(0.074) [0.100] Ma for zircons from volcanic ash beds in the Peñas Coloradas Formation (Río Chico Group), and (4) paleomagnetic results indicating that the Salamanca Formation in this area is entirely of normal polarity, with reversals occurring in the Río Chico Group. Placing these new age constraints in the context of a sequence stratigraphic model for the basin, we correlate the Salamanca Formation in the study area to Chrons C29n and C28n, with the Banco Negro Inferior (BNI), a mature widespread fossiliferous paleosol unit at the top of the Salamanca Formation, corresponding to the top of Chron C28n. The diverse paleo botanical assemblages from this area are here assigned to C28n (64.67- 63.49 Ma), ̃2-3 million years older than previously thought, adding to growing evidence for rapid Southern Hemisphere floral recovery after the Cretaceous-Paleogene extinction. Important Peligran and "Carodnia" zone vertebrate fossil assemblages from coastal BNI and Peñas Coloradas exposures are likely older than previously thought and correlate to the early Torrejonian and early Tiffanian North American Land Mammal Ages, respectively.Fil: Clyde, William C.. University of New Hampshire; Estados UnidosFil: Wilf, Peter. State University of Pennsylvania; Estados UnidosFil: Iglesias, Ari. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Instituto de Investigaciones en Biodiversidad y Medioambiente. Universidad Nacional del Comahue. Centro Regional Universidad Bariloche. Instituto de Investigaciones en Biodiversidad y Medioambiente; ArgentinaFil: Slingerland, Rudy L.. University of Pennsylvania; Estados UnidosFil: Barnum, Timothy. University of New Hampshire; Estados UnidosFil: Bijl, Peter K.. University of Utrecht; Países BajosFil: Bralower, Timothy J.. State University of Pennsylvania; Estados UnidosFil: Brinkhuis, Henk. University of Utrecht; Países BajosFil: Comer, Emily E.. State University of Pennsylvania; Estados UnidosFil: Huber, Brian T.. Smithsonian Institution; Estados UnidosFil: Ibañez Mejia, Mauricio. University of Arizona; Estados UnidosFil: Jicha, Brian R.. University of Wisconsin; Estados UnidosFil: Krause, Javier Marcelo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentina. Museo Paleontológico Egidio Feruglio; ArgentinaFil: Schuet, Jonathan D.. State University of Pennsylvania; Estados UnidosFil: Singer, Bradley S.. University of Wisconsin; Estados UnidosFil: Raigemborn, María Sol. Universidad Nacional de La Plata; ArgentinaFil: Schmitz, Mark D.. University of Idaho; Estados UnidosFil: Sluijs, Appy. University of Utrecht; Países BajosFil: Zamaloa, María del Carmen. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Ecología, Genética y Evolución; ArgentinaGeological Society of America2014-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/80135Clyde, William C.; Wilf, Peter; Iglesias, Ari; Slingerland, Rudy L.; Barnum, Timothy; et al.; New age constraints for the Salamanca Formation and lower Río Chico Group in the western San Jorge Basin, Patagonia, Argentina: Implications for cretaceous-paleogene extinction recovery and land mammal age correlations; Geological Society of America; Geological Society of America Bulletin; 126; 3-4; 1-2014; 289-3060016-7606CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1130/B30915.1info:eu-repo/semantics/altIdentifier/url/https://pubs.geoscienceworld.org/gsa/gsabulletin/article-abstract/126/3-4/289/125989/new-age-constraints-for-the-salamanca-formationinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T10:01:19Zoai:ri.conicet.gov.ar:11336/80135instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-03 10:01:19.46CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv	New age constraints for the Salamanca Formation and lower Río Chico Group in the western San Jorge Basin, Patagonia, Argentina: Implications for cretaceous-paleogene extinction recovery and land mammal age correlations
title	New age constraints for the Salamanca Formation and lower Río Chico Group in the western San Jorge Basin, Patagonia, Argentina: Implications for cretaceous-paleogene extinction recovery and land mammal age correlations
spellingShingle	New age constraints for the Salamanca Formation and lower Río Chico Group in the western San Jorge Basin, Patagonia, Argentina: Implications for cretaceous-paleogene extinction recovery and land mammal age correlations Clyde, William C. Paleogene South America Stratigraphy Fossils Geochronology Paleomagnetism
title_short	New age constraints for the Salamanca Formation and lower Río Chico Group in the western San Jorge Basin, Patagonia, Argentina: Implications for cretaceous-paleogene extinction recovery and land mammal age correlations
title_full	New age constraints for the Salamanca Formation and lower Río Chico Group in the western San Jorge Basin, Patagonia, Argentina: Implications for cretaceous-paleogene extinction recovery and land mammal age correlations
title_fullStr	New age constraints for the Salamanca Formation and lower Río Chico Group in the western San Jorge Basin, Patagonia, Argentina: Implications for cretaceous-paleogene extinction recovery and land mammal age correlations
title_full_unstemmed	New age constraints for the Salamanca Formation and lower Río Chico Group in the western San Jorge Basin, Patagonia, Argentina: Implications for cretaceous-paleogene extinction recovery and land mammal age correlations
title_sort	New age constraints for the Salamanca Formation and lower Río Chico Group in the western San Jorge Basin, Patagonia, Argentina: Implications for cretaceous-paleogene extinction recovery and land mammal age correlations
dc.creator.none.fl_str_mv	Clyde, William C. Wilf, Peter Iglesias, Ari Slingerland, Rudy L. Barnum, Timothy Bijl, Peter K. Bralower, Timothy J. Brinkhuis, Henk Comer, Emily E. Huber, Brian T. Ibañez Mejia, Mauricio Jicha, Brian R. Krause, Javier Marcelo Schuet, Jonathan D. Singer, Bradley S. Raigemborn, María Sol Schmitz, Mark D. Sluijs, Appy Zamaloa, María del Carmen
author	Clyde, William C.
author_facet	Clyde, William C. Wilf, Peter Iglesias, Ari Slingerland, Rudy L. Barnum, Timothy Bijl, Peter K. Bralower, Timothy J. Brinkhuis, Henk Comer, Emily E. Huber, Brian T. Ibañez Mejia, Mauricio Jicha, Brian R. Krause, Javier Marcelo Schuet, Jonathan D. Singer, Bradley S. Raigemborn, María Sol Schmitz, Mark D. Sluijs, Appy Zamaloa, María del Carmen
author_role	author
author2	Wilf, Peter Iglesias, Ari Slingerland, Rudy L. Barnum, Timothy Bijl, Peter K. Bralower, Timothy J. Brinkhuis, Henk Comer, Emily E. Huber, Brian T. Ibañez Mejia, Mauricio Jicha, Brian R. Krause, Javier Marcelo Schuet, Jonathan D. Singer, Bradley S. Raigemborn, María Sol Schmitz, Mark D. Sluijs, Appy Zamaloa, María del Carmen
author2_role	author author author author author author author author author author author author author author author author author author
dc.subject.none.fl_str_mv	Paleogene South America Stratigraphy Fossils Geochronology Paleomagnetism
topic	Paleogene South America Stratigraphy Fossils Geochronology Paleomagnetism
purl_subject.fl_str_mv	https://purl.org/becyt/ford/1.5 https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv	The Salamanca Formation of the San Jorge Basin (Patagonia, Argentina) preserves critical records of Southern Hemisphere Paleocene biotas, but its age remains poorly resolved, with estimates ranging from Late Cretaceous to middle Paleocene. We report a multi-disciplinary geochronologic study of the Salamanca Formation and overlying Río Chico Group in the western part of the basin. New constraints include (1) an 40Ar/39Ar age determination of 67.31 ± 0.55 Ma from a basalt flow underlying the Salamanca Formation, (2) micropaleontological results indicating an early Danian age for the base of the Salamanca Formation, (3) laser ablation HR-MC-ICP-MS (high resolutionmulti collector-inductively coupled plasmamass spectrometry) U-Pb ages and a highresolution TIMS (thermal ionization mass spectrometry) age of 61.984 ± 0.041(0.074) [0.100] Ma for zircons from volcanic ash beds in the Peñas Coloradas Formation (Río Chico Group), and (4) paleomagnetic results indicating that the Salamanca Formation in this area is entirely of normal polarity, with reversals occurring in the Río Chico Group. Placing these new age constraints in the context of a sequence stratigraphic model for the basin, we correlate the Salamanca Formation in the study area to Chrons C29n and C28n, with the Banco Negro Inferior (BNI), a mature widespread fossiliferous paleosol unit at the top of the Salamanca Formation, corresponding to the top of Chron C28n. The diverse paleo botanical assemblages from this area are here assigned to C28n (64.67- 63.49 Ma), ̃2-3 million years older than previously thought, adding to growing evidence for rapid Southern Hemisphere floral recovery after the Cretaceous-Paleogene extinction. Important Peligran and "Carodnia" zone vertebrate fossil assemblages from coastal BNI and Peñas Coloradas exposures are likely older than previously thought and correlate to the early Torrejonian and early Tiffanian North American Land Mammal Ages, respectively. Fil: Clyde, William C.. University of New Hampshire; Estados Unidos Fil: Wilf, Peter. State University of Pennsylvania; Estados Unidos Fil: Iglesias, Ari. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Instituto de Investigaciones en Biodiversidad y Medioambiente. Universidad Nacional del Comahue. Centro Regional Universidad Bariloche. Instituto de Investigaciones en Biodiversidad y Medioambiente; Argentina Fil: Slingerland, Rudy L.. University of Pennsylvania; Estados Unidos Fil: Barnum, Timothy. University of New Hampshire; Estados Unidos Fil: Bijl, Peter K.. University of Utrecht; Países Bajos Fil: Bralower, Timothy J.. State University of Pennsylvania; Estados Unidos Fil: Brinkhuis, Henk. University of Utrecht; Países Bajos Fil: Comer, Emily E.. State University of Pennsylvania; Estados Unidos Fil: Huber, Brian T.. Smithsonian Institution; Estados Unidos Fil: Ibañez Mejia, Mauricio. University of Arizona; Estados Unidos Fil: Jicha, Brian R.. University of Wisconsin; Estados Unidos Fil: Krause, Javier Marcelo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentina. Museo Paleontológico Egidio Feruglio; Argentina Fil: Schuet, Jonathan D.. State University of Pennsylvania; Estados Unidos Fil: Singer, Bradley S.. University of Wisconsin; Estados Unidos Fil: Raigemborn, María Sol. Universidad Nacional de La Plata; Argentina Fil: Schmitz, Mark D.. University of Idaho; Estados Unidos Fil: Sluijs, Appy. University of Utrecht; Países Bajos Fil: Zamaloa, María del Carmen. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Ecología, Genética y Evolución; Argentina
description	The Salamanca Formation of the San Jorge Basin (Patagonia, Argentina) preserves critical records of Southern Hemisphere Paleocene biotas, but its age remains poorly resolved, with estimates ranging from Late Cretaceous to middle Paleocene. We report a multi-disciplinary geochronologic study of the Salamanca Formation and overlying Río Chico Group in the western part of the basin. New constraints include (1) an 40Ar/39Ar age determination of 67.31 ± 0.55 Ma from a basalt flow underlying the Salamanca Formation, (2) micropaleontological results indicating an early Danian age for the base of the Salamanca Formation, (3) laser ablation HR-MC-ICP-MS (high resolutionmulti collector-inductively coupled plasmamass spectrometry) U-Pb ages and a highresolution TIMS (thermal ionization mass spectrometry) age of 61.984 ± 0.041(0.074) [0.100] Ma for zircons from volcanic ash beds in the Peñas Coloradas Formation (Río Chico Group), and (4) paleomagnetic results indicating that the Salamanca Formation in this area is entirely of normal polarity, with reversals occurring in the Río Chico Group. Placing these new age constraints in the context of a sequence stratigraphic model for the basin, we correlate the Salamanca Formation in the study area to Chrons C29n and C28n, with the Banco Negro Inferior (BNI), a mature widespread fossiliferous paleosol unit at the top of the Salamanca Formation, corresponding to the top of Chron C28n. The diverse paleo botanical assemblages from this area are here assigned to C28n (64.67- 63.49 Ma), ̃2-3 million years older than previously thought, adding to growing evidence for rapid Southern Hemisphere floral recovery after the Cretaceous-Paleogene extinction. Important Peligran and "Carodnia" zone vertebrate fossil assemblages from coastal BNI and Peñas Coloradas exposures are likely older than previously thought and correlate to the early Torrejonian and early Tiffanian North American Land Mammal Ages, respectively.
publishDate	2014
dc.date.none.fl_str_mv	2014-01
dc.type.none.fl_str_mv	info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://purl.org/coar/resource_type/c_6501 info:ar-repo/semantics/articulo
format	article
status_str	publishedVersion
dc.identifier.none.fl_str_mv	http://hdl.handle.net/11336/80135 Clyde, William C.; Wilf, Peter; Iglesias, Ari; Slingerland, Rudy L.; Barnum, Timothy; et al.; New age constraints for the Salamanca Formation and lower Río Chico Group in the western San Jorge Basin, Patagonia, Argentina: Implications for cretaceous-paleogene extinction recovery and land mammal age correlations; Geological Society of America; Geological Society of America Bulletin; 126; 3-4; 1-2014; 289-306 0016-7606 CONICET Digital CONICET
url	http://hdl.handle.net/11336/80135
identifier_str_mv	Clyde, William C.; Wilf, Peter; Iglesias, Ari; Slingerland, Rudy L.; Barnum, Timothy; et al.; New age constraints for the Salamanca Formation and lower Río Chico Group in the western San Jorge Basin, Patagonia, Argentina: Implications for cretaceous-paleogene extinction recovery and land mammal age correlations; Geological Society of America; Geological Society of America Bulletin; 126; 3-4; 1-2014; 289-306 0016-7606 CONICET Digital CONICET
dc.language.none.fl_str_mv	eng
language	eng
dc.relation.none.fl_str_mv	info:eu-repo/semantics/altIdentifier/doi/10.1130/B30915.1 info:eu-repo/semantics/altIdentifier/url/https://pubs.geoscienceworld.org/gsa/gsabulletin/article-abstract/126/3-4/289/125989/new-age-constraints-for-the-salamanca-formation
dc.rights.none.fl_str_mv	info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv	openAccess
rights_invalid_str_mv	https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv	application/pdf application/pdf application/pdf application/pdf application/pdf
dc.publisher.none.fl_str_mv	Geological Society of America
publisher.none.fl_str_mv	Geological Society of America
dc.source.none.fl_str_mv	reponame:CONICET Digital (CONICET) instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str	CONICET Digital (CONICET)
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instname_str	Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv	CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv	dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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New age constraints for the Salamanca Formation and lower Río Chico Group in the western San Jorge Basin, Patagonia, Argentina: Implications for cretaceous-paleogene extinction rec...

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