Detrital zircons from late Paleozoic accretionary complexes in north-central Chile (28°-32°S): Possible fingerprints of the Chilenia terrane

Autores
Álvarez, J.; Mpodozis, C.; Arriagada, C.; Astini, Ricardo Alfredo; Morata, D.; Salazar, E.; Valencia, V. A.; Vervoort, J. D.
Año de publicación
2011
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
During the Paleozoic the Andean basement of central Chile and Argentina grew westwards by the amalgamation of diverse tectonostratigraphic terranes some of them derived from Laurentia. The last to be accreted, in the Devonian, corresponds to the hypothetical Chilenia terrane. However, direct evidences about the nature of its basement are scarce because volcanics and intrusives associated to a Late Paleozoic arc and the Choiyoi Large Igneous Province concealed almost all older geological units. Indirect evidences about the nature of Chilenia can be obtained from the examination of the detrital zircon age populations in late Paleozoic accretionary prisms formed after its collision along the Pacific margin of Gondwana which may have incorporated sediments derived from the erosion of the Chilenia basement. Zircon populations from three of these accretionary complexes, El Tránsito, Huasco and Choapa (north-central Chile, 28-32°S) include Ordovician (Famatinian), Cambrian (Pampean), Neoproterozoic (Brasiliano) and Mesoproterozoic (Grenvillian) zircons whose sources can be tracked to Gondwana. Nevertheless, the three complexes also include a very large subpopulation of zircons that cannot easily be traced to well-known Gondwana sources and that are derived from the erosion of late Neoproterozoic to Early Cambrian (580-530 Ma) magmatic/metamorphic sources, that possibly form a significant component of the Chilenia microcontinental basement.
Fil: Álvarez, J.. Universidad de Chile; Chile
Fil: Mpodozis, C.. Antofagasta Minerals; Chile
Fil: Arriagada, C.. Universidad de Chile; Chile
Fil: Astini, Ricardo Alfredo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Centro de Investigaciones en Ciencias de la Tierra. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Centro de Investigaciones en Ciencias de la Tierra; Argentina
Fil: Morata, D.. Universidad de Chile; Chile
Fil: Salazar, E.. Universidad de Chile; Chile
Fil: Valencia, V. A.. Valencia Geoservices; Estados Unidos
Fil: Vervoort, J. D.. Washington State University; Estados Unidos
Materia
Accretionary Complexes
Chilenia
Detrital Zircons
Paleozoic
Proterozoic
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/53418
Acceder
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network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Detrital zircons from late Paleozoic accretionary complexes in north-central Chile (28°-32°S): Possible fingerprints of the Chilenia terraneÁlvarez, J.Mpodozis, C.Arriagada, C.Astini, Ricardo AlfredoMorata, D.Salazar, E.Valencia, V. A.Vervoort, J. D.Accretionary ComplexesChileniaDetrital ZirconsPaleozoicProterozoichttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1During the Paleozoic the Andean basement of central Chile and Argentina grew westwards by the amalgamation of diverse tectonostratigraphic terranes some of them derived from Laurentia. The last to be accreted, in the Devonian, corresponds to the hypothetical Chilenia terrane. However, direct evidences about the nature of its basement are scarce because volcanics and intrusives associated to a Late Paleozoic arc and the Choiyoi Large Igneous Province concealed almost all older geological units. Indirect evidences about the nature of Chilenia can be obtained from the examination of the detrital zircon age populations in late Paleozoic accretionary prisms formed after its collision along the Pacific margin of Gondwana which may have incorporated sediments derived from the erosion of the Chilenia basement. Zircon populations from three of these accretionary complexes, El Tránsito, Huasco and Choapa (north-central Chile, 28-32°S) include Ordovician (Famatinian), Cambrian (Pampean), Neoproterozoic (Brasiliano) and Mesoproterozoic (Grenvillian) zircons whose sources can be tracked to Gondwana. Nevertheless, the three complexes also include a very large subpopulation of zircons that cannot easily be traced to well-known Gondwana sources and that are derived from the erosion of late Neoproterozoic to Early Cambrian (580-530 Ma) magmatic/metamorphic sources, that possibly form a significant component of the Chilenia microcontinental basement.Fil: Álvarez, J.. Universidad de Chile; ChileFil: Mpodozis, C.. Antofagasta Minerals; ChileFil: Arriagada, C.. Universidad de Chile; ChileFil: Astini, Ricardo Alfredo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Centro de Investigaciones en Ciencias de la Tierra. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Centro de Investigaciones en Ciencias de la Tierra; ArgentinaFil: Morata, D.. Universidad de Chile; ChileFil: Salazar, E.. Universidad de Chile; ChileFil: Valencia, V. A.. Valencia Geoservices; Estados UnidosFil: Vervoort, J. D.. Washington State University; Estados UnidosPergamon-Elsevier Science Ltd2011-05info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/53418Álvarez, J.; Mpodozis, C.; Arriagada, C.; Astini, Ricardo Alfredo; Morata, D.; et al.; Detrital zircons from late Paleozoic accretionary complexes in north-central Chile (28°-32°S): Possible fingerprints of the Chilenia terrane; Pergamon-Elsevier Science Ltd; Journal of South American Earth Sciences; 32; 4; 5-2011; 460-4760895-9811CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0895981111000848info:eu-repo/semantics/altIdentifier/doi/10.1016/j.jsames.2011.06.002info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T10:09:05Zoai:ri.conicet.gov.ar:11336/53418instacron: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 10:09:05.916CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Detrital zircons from late Paleozoic accretionary complexes in north-central Chile (28°-32°S): Possible fingerprints of the Chilenia terrane
title Detrital zircons from late Paleozoic accretionary complexes in north-central Chile (28°-32°S): Possible fingerprints of the Chilenia terrane
spellingShingle Detrital zircons from late Paleozoic accretionary complexes in north-central Chile (28°-32°S): Possible fingerprints of the Chilenia terrane
Álvarez, J.
Accretionary Complexes
Chilenia
Detrital Zircons
Paleozoic
Proterozoic
title_short Detrital zircons from late Paleozoic accretionary complexes in north-central Chile (28°-32°S): Possible fingerprints of the Chilenia terrane
title_full Detrital zircons from late Paleozoic accretionary complexes in north-central Chile (28°-32°S): Possible fingerprints of the Chilenia terrane
title_fullStr Detrital zircons from late Paleozoic accretionary complexes in north-central Chile (28°-32°S): Possible fingerprints of the Chilenia terrane
title_full_unstemmed Detrital zircons from late Paleozoic accretionary complexes in north-central Chile (28°-32°S): Possible fingerprints of the Chilenia terrane
title_sort Detrital zircons from late Paleozoic accretionary complexes in north-central Chile (28°-32°S): Possible fingerprints of the Chilenia terrane
dc.creator.none.fl_str_mv Álvarez, J.
Mpodozis, C.
Arriagada, C.
Astini, Ricardo Alfredo
Morata, D.
Salazar, E.
Valencia, V. A.
Vervoort, J. D.
author Álvarez, J.
author_facet Álvarez, J.
Mpodozis, C.
Arriagada, C.
Astini, Ricardo Alfredo
Morata, D.
Salazar, E.
Valencia, V. A.
Vervoort, J. D.
author_role author
author2 Mpodozis, C.
Arriagada, C.
Astini, Ricardo Alfredo
Morata, D.
Salazar, E.
Valencia, V. A.
Vervoort, J. D.
author2_role author
author
author
author
author
author
author
dc.subject.none.fl_str_mv Accretionary Complexes
Chilenia
Detrital Zircons
Paleozoic
Proterozoic
topic Accretionary Complexes
Chilenia
Detrital Zircons
Paleozoic
Proterozoic
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv During the Paleozoic the Andean basement of central Chile and Argentina grew westwards by the amalgamation of diverse tectonostratigraphic terranes some of them derived from Laurentia. The last to be accreted, in the Devonian, corresponds to the hypothetical Chilenia terrane. However, direct evidences about the nature of its basement are scarce because volcanics and intrusives associated to a Late Paleozoic arc and the Choiyoi Large Igneous Province concealed almost all older geological units. Indirect evidences about the nature of Chilenia can be obtained from the examination of the detrital zircon age populations in late Paleozoic accretionary prisms formed after its collision along the Pacific margin of Gondwana which may have incorporated sediments derived from the erosion of the Chilenia basement. Zircon populations from three of these accretionary complexes, El Tránsito, Huasco and Choapa (north-central Chile, 28-32°S) include Ordovician (Famatinian), Cambrian (Pampean), Neoproterozoic (Brasiliano) and Mesoproterozoic (Grenvillian) zircons whose sources can be tracked to Gondwana. Nevertheless, the three complexes also include a very large subpopulation of zircons that cannot easily be traced to well-known Gondwana sources and that are derived from the erosion of late Neoproterozoic to Early Cambrian (580-530 Ma) magmatic/metamorphic sources, that possibly form a significant component of the Chilenia microcontinental basement.
Fil: Álvarez, J.. Universidad de Chile; Chile
Fil: Mpodozis, C.. Antofagasta Minerals; Chile
Fil: Arriagada, C.. Universidad de Chile; Chile
Fil: Astini, Ricardo Alfredo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Centro de Investigaciones en Ciencias de la Tierra. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Centro de Investigaciones en Ciencias de la Tierra; Argentina
Fil: Morata, D.. Universidad de Chile; Chile
Fil: Salazar, E.. Universidad de Chile; Chile
Fil: Valencia, V. A.. Valencia Geoservices; Estados Unidos
Fil: Vervoort, J. D.. Washington State University; Estados Unidos
description During the Paleozoic the Andean basement of central Chile and Argentina grew westwards by the amalgamation of diverse tectonostratigraphic terranes some of them derived from Laurentia. The last to be accreted, in the Devonian, corresponds to the hypothetical Chilenia terrane. However, direct evidences about the nature of its basement are scarce because volcanics and intrusives associated to a Late Paleozoic arc and the Choiyoi Large Igneous Province concealed almost all older geological units. Indirect evidences about the nature of Chilenia can be obtained from the examination of the detrital zircon age populations in late Paleozoic accretionary prisms formed after its collision along the Pacific margin of Gondwana which may have incorporated sediments derived from the erosion of the Chilenia basement. Zircon populations from three of these accretionary complexes, El Tránsito, Huasco and Choapa (north-central Chile, 28-32°S) include Ordovician (Famatinian), Cambrian (Pampean), Neoproterozoic (Brasiliano) and Mesoproterozoic (Grenvillian) zircons whose sources can be tracked to Gondwana. Nevertheless, the three complexes also include a very large subpopulation of zircons that cannot easily be traced to well-known Gondwana sources and that are derived from the erosion of late Neoproterozoic to Early Cambrian (580-530 Ma) magmatic/metamorphic sources, that possibly form a significant component of the Chilenia microcontinental basement.
publishDate 2011
dc.date.none.fl_str_mv 2011-05
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/11336/53418
Álvarez, J.; Mpodozis, C.; Arriagada, C.; Astini, Ricardo Alfredo; Morata, D.; et al.; Detrital zircons from late Paleozoic accretionary complexes in north-central Chile (28°-32°S): Possible fingerprints of the Chilenia terrane; Pergamon-Elsevier Science Ltd; Journal of South American Earth Sciences; 32; 4; 5-2011; 460-476
0895-9811
CONICET Digital
CONICET
url http://hdl.handle.net/11336/53418
identifier_str_mv Álvarez, J.; Mpodozis, C.; Arriagada, C.; Astini, Ricardo Alfredo; Morata, D.; et al.; Detrital zircons from late Paleozoic accretionary complexes in north-central Chile (28°-32°S): Possible fingerprints of the Chilenia terrane; Pergamon-Elsevier Science Ltd; Journal of South American Earth Sciences; 32; 4; 5-2011; 460-476
0895-9811
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0895981111000848
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.jsames.2011.06.002
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
dc.publisher.none.fl_str_mv Pergamon-Elsevier Science Ltd
publisher.none.fl_str_mv Pergamon-Elsevier Science Ltd
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
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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score 13.13397

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