The Gondwana connections of northern Patagonia

Autores
Pankhurst, R. J.; Rapela, Carlos Washington; López, Mónica Graciela; Rapalini, Augusto Ernesto; Fanning, C. M.; Galindo, C.
Año de publicación
2014
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
A multidisciplinary study (U–Pb sensitive high-resolution ion microprobe geochronology, Hf and O isotopes in zircon, Sr and Nd isotopes in whole-rocks, as well as major and trace element geochemistry) has been carried out on granitoid samples from the area west of Valcheta, North Patagonian Massif, Argentina. These confirm the Cambrian age of the Tardugno Granodiorite (528 ± 4 Ma) and the Late Permian age of granites in the central part of the Yaminué complex (250 Ma). Together with petrological and structural information for the area, we consider a previously suggested idea that the Cambrian and Ordovician granites of northeastern Patagonia represent continuation of the Pampean and Famatinian orogenic belts of the Sierras Pampeanas, respectively. Our interpretation does not support the hypothesis that Patagonia was accreted in Late Palaeozoic times as a far-travelled terrane, originating in the Central Transantarctic Mountains, and the arguments for and against this idea are reviewed. A parautochthonous origin is preferred with no major ocean closure between the North Patagonian Massif and the Sierra de la Ventana fold belt.
Centro de Investigaciones Geológicas
Consejo Nacional de Investigaciones Científicas y Técnicas
Materia
Ciencias Naturales
Patagonia
Gondwana
Geochronology
North patagonian massif
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by-nc-sa/4.0/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/98554
Acceder
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network_name_str SEDICI (UNLP)
spelling The Gondwana connections of northern PatagoniaPankhurst, R. J.Rapela, Carlos WashingtonLópez, Mónica GracielaRapalini, Augusto ErnestoFanning, C. M.Galindo, C.Ciencias NaturalesPatagoniaGondwanaGeochronologyNorth patagonian massifA multidisciplinary study (U–Pb sensitive high-resolution ion microprobe geochronology, Hf and O isotopes in zircon, Sr and Nd isotopes in whole-rocks, as well as major and trace element geochemistry) has been carried out on granitoid samples from the area west of Valcheta, North Patagonian Massif, Argentina. These confirm the Cambrian age of the Tardugno Granodiorite (528 ± 4 Ma) and the Late Permian age of granites in the central part of the Yaminué complex (250 Ma). Together with petrological and structural information for the area, we consider a previously suggested idea that the Cambrian and Ordovician granites of northeastern Patagonia represent continuation of the Pampean and Famatinian orogenic belts of the Sierras Pampeanas, respectively. Our interpretation does not support the hypothesis that Patagonia was accreted in Late Palaeozoic times as a far-travelled terrane, originating in the Central Transantarctic Mountains, and the arguments for and against this idea are reviewed. A parautochthonous origin is preferred with no major ocean closure between the North Patagonian Massif and the Sierra de la Ventana fold belt.Centro de Investigaciones GeológicasConsejo Nacional de Investigaciones Científicas y Técnicas2014-03info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf313-328http://sedici.unlp.edu.ar/handle/10915/98554enginfo:eu-repo/semantics/altIdentifier/url/https://ri.conicet.gov.ar/11336/18421info:eu-repo/semantics/altIdentifier/url/http://jgs.lyellcollection.org/content/171/3/313info:eu-repo/semantics/altIdentifier/issn/0016-7649info:eu-repo/semantics/altIdentifier/doi/10.1144/jgs2013-081info:eu-repo/semantics/altIdentifier/hdl/11336/18421info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-sa/4.0/Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-10-15T11:12:55Zoai:sedici.unlp.edu.ar:10915/98554Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-10-15 11:12:56.026SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv The Gondwana connections of northern Patagonia
title The Gondwana connections of northern Patagonia
spellingShingle The Gondwana connections of northern Patagonia
Pankhurst, R. J.
Ciencias Naturales
Patagonia
Gondwana
Geochronology
North patagonian massif
title_short The Gondwana connections of northern Patagonia
title_full The Gondwana connections of northern Patagonia
title_fullStr The Gondwana connections of northern Patagonia
title_full_unstemmed The Gondwana connections of northern Patagonia
title_sort The Gondwana connections of northern Patagonia
dc.creator.none.fl_str_mv Pankhurst, R. J.
Rapela, Carlos Washington
López, Mónica Graciela
Rapalini, Augusto Ernesto
Fanning, C. M.
Galindo, C.
author Pankhurst, R. J.
author_facet Pankhurst, R. J.
Rapela, Carlos Washington
López, Mónica Graciela
Rapalini, Augusto Ernesto
Fanning, C. M.
Galindo, C.
author_role author
author2 Rapela, Carlos Washington
López, Mónica Graciela
Rapalini, Augusto Ernesto
Fanning, C. M.
Galindo, C.
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv Ciencias Naturales
Patagonia
Gondwana
Geochronology
North patagonian massif
topic Ciencias Naturales
Patagonia
Gondwana
Geochronology
North patagonian massif
dc.description.none.fl_txt_mv A multidisciplinary study (U–Pb sensitive high-resolution ion microprobe geochronology, Hf and O isotopes in zircon, Sr and Nd isotopes in whole-rocks, as well as major and trace element geochemistry) has been carried out on granitoid samples from the area west of Valcheta, North Patagonian Massif, Argentina. These confirm the Cambrian age of the Tardugno Granodiorite (528 ± 4 Ma) and the Late Permian age of granites in the central part of the Yaminué complex (250 Ma). Together with petrological and structural information for the area, we consider a previously suggested idea that the Cambrian and Ordovician granites of northeastern Patagonia represent continuation of the Pampean and Famatinian orogenic belts of the Sierras Pampeanas, respectively. Our interpretation does not support the hypothesis that Patagonia was accreted in Late Palaeozoic times as a far-travelled terrane, originating in the Central Transantarctic Mountains, and the arguments for and against this idea are reviewed. A parautochthonous origin is preferred with no major ocean closure between the North Patagonian Massif and the Sierra de la Ventana fold belt.
Centro de Investigaciones Geológicas
Consejo Nacional de Investigaciones Científicas y Técnicas
description A multidisciplinary study (U–Pb sensitive high-resolution ion microprobe geochronology, Hf and O isotopes in zircon, Sr and Nd isotopes in whole-rocks, as well as major and trace element geochemistry) has been carried out on granitoid samples from the area west of Valcheta, North Patagonian Massif, Argentina. These confirm the Cambrian age of the Tardugno Granodiorite (528 ± 4 Ma) and the Late Permian age of granites in the central part of the Yaminué complex (250 Ma). Together with petrological and structural information for the area, we consider a previously suggested idea that the Cambrian and Ordovician granites of northeastern Patagonia represent continuation of the Pampean and Famatinian orogenic belts of the Sierras Pampeanas, respectively. Our interpretation does not support the hypothesis that Patagonia was accreted in Late Palaeozoic times as a far-travelled terrane, originating in the Central Transantarctic Mountains, and the arguments for and against this idea are reviewed. A parautochthonous origin is preferred with no major ocean closure between the North Patagonian Massif and the Sierra de la Ventana fold belt.
publishDate 2014
dc.date.none.fl_str_mv 2014-03
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Articulo
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
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status_str publishedVersion
dc.identifier.none.fl_str_mv http://sedici.unlp.edu.ar/handle/10915/98554
url http://sedici.unlp.edu.ar/handle/10915/98554
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://ri.conicet.gov.ar/11336/18421
info:eu-repo/semantics/altIdentifier/url/http://jgs.lyellcollection.org/content/171/3/313
info:eu-repo/semantics/altIdentifier/issn/0016-7649
info:eu-repo/semantics/altIdentifier/doi/10.1144/jgs2013-081
info:eu-repo/semantics/altIdentifier/hdl/11336/18421
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
dc.format.none.fl_str_mv application/pdf
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dc.source.none.fl_str_mv reponame:SEDICI (UNLP)
instname:Universidad Nacional de La Plata
instacron:UNLP
reponame_str SEDICI (UNLP)
collection SEDICI (UNLP)
instname_str Universidad Nacional de La Plata
instacron_str UNLP
institution UNLP
repository.name.fl_str_mv SEDICI (UNLP) - Universidad Nacional de La Plata
repository.mail.fl_str_mv alira@sedici.unlp.edu.ar
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