Combined U-Pb SHRIMP and Hf isotope study of the Late Paleozoic Yaminué Complex, Río Negro province, Argentina. Implications for the origin and evolution of the Patagonia composite...

Autores
Chernicoff, Carlos Jorge; Zappettini, Eduardo Osvaldo; Santos, João O. S.; Mcnaughton, Neal J.; Belousova, E.
Año de publicación
2013
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We have carried out zircon U-Pb SHRIMP dating and Hf isotope determinations on a biotite paraschist and on a tonalitic orthogneiss of the Yaminué Complex, and re-evaluate this complex in the broader context of the tectonic evolution of the Patagonia composite terrane. In the metasedimentary unit (msuYC), the youngest detrital zircon dated at 318 ± 5 Ma (Mississippian/Pennsylvanian boundary) indicates a Pennsylvanian (or younger) depositional age. The three main age populations peak at 474, 454 and 374 Ma. Preliminary Hf isotope data for two detrital zircons (447 and 655 Ma) yielded ε(Hf) values of −0.32 and 0.48, indicating that their primary sources contained small amounts of recycled crustal components (of Calymmian age; TDM 1.56 Ga). Zircons from the orthogneiss (miuYC; intrusive into msuYC) show a crystallization age of 261.3 ± 2.7 Ma (Capitanian; late middle Permian) which is broadly coeval with deformation, and Neoarchean–Paleoproterozoic inheritance. Meaningful core-rim relationship between Neoarchean zircon cores and late Permian rims is well defined, indicating the occurrence of Archean crust in this sector of Patagonia. Hf TDM of Permian zircons is mainly Meso-Paleoarchean (2.97–3.35 Ga), with highly negative ε(Hf) values (ca. −33). Hf TDM of inherited Neoarchean zircon cores is also Meso-Paleoarchean (3.14–3.45 Ga) but more juvenile (ε(Hf) = −0.3). Hf isotopes reinforce the presence of unexposed ancient crust in this area. Combining geological and isotope data, as well as geophysical models, we identify the Yaminué Complex within the La Esperanza-Yaminué crustal block flanked by two other, distinct crustal blocks: the Eastern block which forms part of the Patagonia terrane sensu stricto, located in the eastern Patagonian region, and the Western block forming part of the Southern Patagonia terrane. Their origins and timing of amalgamation to form the Patagonia composite terrane are also discussed.
Fil: Chernicoff, Carlos Jorge. Secretaría de Industria y Minería. Servicio Geologico Minero Argentino; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Zappettini, Eduardo Osvaldo. Secretaría de Industria y Minería. Servicio Geologico Minero Argentino; Argentina
Fil: Santos, João O. S.. University of Western Australia; Australia. Redstone Resources; Australia
Fil: Mcnaughton, Neal J.. Curtin University. John de Laeter Centre ; Australia
Fil: Belousova, E.. Macquarie University. ARC National Key Centre for Geochemical Evolution and Metallogeny of Continents; Australia
Materia
U-Pb SHRIMP
Hf isootopes
Yaminue Complex
Patagonia composite terrane
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/3842
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/3842
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Combined U-Pb SHRIMP and Hf isotope study of the Late Paleozoic Yaminué Complex, Río Negro province, Argentina. Implications for the origin and evolution of the Patagonia composite terraneChernicoff, Carlos JorgeZappettini, Eduardo OsvaldoSantos, João O. S.Mcnaughton, Neal J.Belousova, E.U-Pb SHRIMPHf isootopesYaminue ComplexPatagonia composite terranehttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1We have carried out zircon U-Pb SHRIMP dating and Hf isotope determinations on a biotite paraschist and on a tonalitic orthogneiss of the Yaminué Complex, and re-evaluate this complex in the broader context of the tectonic evolution of the Patagonia composite terrane. In the metasedimentary unit (msuYC), the youngest detrital zircon dated at 318 ± 5 Ma (Mississippian/Pennsylvanian boundary) indicates a Pennsylvanian (or younger) depositional age. The three main age populations peak at 474, 454 and 374 Ma. Preliminary Hf isotope data for two detrital zircons (447 and 655 Ma) yielded ε(Hf) values of −0.32 and 0.48, indicating that their primary sources contained small amounts of recycled crustal components (of Calymmian age; TDM 1.56 Ga). Zircons from the orthogneiss (miuYC; intrusive into msuYC) show a crystallization age of 261.3 ± 2.7 Ma (Capitanian; late middle Permian) which is broadly coeval with deformation, and Neoarchean–Paleoproterozoic inheritance. Meaningful core-rim relationship between Neoarchean zircon cores and late Permian rims is well defined, indicating the occurrence of Archean crust in this sector of Patagonia. Hf TDM of Permian zircons is mainly Meso-Paleoarchean (2.97–3.35 Ga), with highly negative ε(Hf) values (ca. −33). Hf TDM of inherited Neoarchean zircon cores is also Meso-Paleoarchean (3.14–3.45 Ga) but more juvenile (ε(Hf) = −0.3). Hf isotopes reinforce the presence of unexposed ancient crust in this area. Combining geological and isotope data, as well as geophysical models, we identify the Yaminué Complex within the La Esperanza-Yaminué crustal block flanked by two other, distinct crustal blocks: the Eastern block which forms part of the Patagonia terrane sensu stricto, located in the eastern Patagonian region, and the Western block forming part of the Southern Patagonia terrane. Their origins and timing of amalgamation to form the Patagonia composite terrane are also discussed.Fil: Chernicoff, Carlos Jorge. Secretaría de Industria y Minería. Servicio Geologico Minero Argentino; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Zappettini, Eduardo Osvaldo. Secretaría de Industria y Minería. Servicio Geologico Minero Argentino; ArgentinaFil: Santos, João O. S.. University of Western Australia; Australia. Redstone Resources; AustraliaFil: Mcnaughton, Neal J.. Curtin University. John de Laeter Centre ; AustraliaFil: Belousova, E.. Macquarie University. ARC National Key Centre for Geochemical Evolution and Metallogeny of Continents; AustraliaElsevier2013-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/3842Chernicoff, Carlos Jorge; Zappettini, Eduardo Osvaldo; Santos, João O. S.; Mcnaughton, Neal J.; Belousova, E.; Combined U-Pb SHRIMP and Hf isotope study of the Late Paleozoic Yaminué Complex, Río Negro province, Argentina. Implications for the origin and evolution of the Patagonia composite terrane; Elsevier; Geoscience Frontiers; 4; 6; 1-2013; 37-561674-9871enginfo:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S1674987112000850info:eu-repo/semantics/altIdentifier/doi/10.1016/j.gsf.2012.06.003info:eu-repo/semantics/altIdentifier/issn/1674-9871info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-nd/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T10:09:48Zoai:ri.conicet.gov.ar:11336/3842instacron: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 10:09:49.114CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Combined U-Pb SHRIMP and Hf isotope study of the Late Paleozoic Yaminué Complex, Río Negro province, Argentina. Implications for the origin and evolution of the Patagonia composite terrane
title Combined U-Pb SHRIMP and Hf isotope study of the Late Paleozoic Yaminué Complex, Río Negro province, Argentina. Implications for the origin and evolution of the Patagonia composite terrane
spellingShingle Combined U-Pb SHRIMP and Hf isotope study of the Late Paleozoic Yaminué Complex, Río Negro province, Argentina. Implications for the origin and evolution of the Patagonia composite terrane
Chernicoff, Carlos Jorge
U-Pb SHRIMP
Hf isootopes
Yaminue Complex
Patagonia composite terrane
title_short Combined U-Pb SHRIMP and Hf isotope study of the Late Paleozoic Yaminué Complex, Río Negro province, Argentina. Implications for the origin and evolution of the Patagonia composite terrane
title_full Combined U-Pb SHRIMP and Hf isotope study of the Late Paleozoic Yaminué Complex, Río Negro province, Argentina. Implications for the origin and evolution of the Patagonia composite terrane
title_fullStr Combined U-Pb SHRIMP and Hf isotope study of the Late Paleozoic Yaminué Complex, Río Negro province, Argentina. Implications for the origin and evolution of the Patagonia composite terrane
title_full_unstemmed Combined U-Pb SHRIMP and Hf isotope study of the Late Paleozoic Yaminué Complex, Río Negro province, Argentina. Implications for the origin and evolution of the Patagonia composite terrane
title_sort Combined U-Pb SHRIMP and Hf isotope study of the Late Paleozoic Yaminué Complex, Río Negro province, Argentina. Implications for the origin and evolution of the Patagonia composite terrane
dc.creator.none.fl_str_mv Chernicoff, Carlos Jorge
Zappettini, Eduardo Osvaldo
Santos, João O. S.
Mcnaughton, Neal J.
Belousova, E.
author Chernicoff, Carlos Jorge
author_facet Chernicoff, Carlos Jorge
Zappettini, Eduardo Osvaldo
Santos, João O. S.
Mcnaughton, Neal J.
Belousova, E.
author_role author
author2 Zappettini, Eduardo Osvaldo
Santos, João O. S.
Mcnaughton, Neal J.
Belousova, E.
author2_role author
author
author
author
dc.subject.none.fl_str_mv U-Pb SHRIMP
Hf isootopes
Yaminue Complex
Patagonia composite terrane
topic U-Pb SHRIMP
Hf isootopes
Yaminue Complex
Patagonia composite terrane
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv We have carried out zircon U-Pb SHRIMP dating and Hf isotope determinations on a biotite paraschist and on a tonalitic orthogneiss of the Yaminué Complex, and re-evaluate this complex in the broader context of the tectonic evolution of the Patagonia composite terrane. In the metasedimentary unit (msuYC), the youngest detrital zircon dated at 318 ± 5 Ma (Mississippian/Pennsylvanian boundary) indicates a Pennsylvanian (or younger) depositional age. The three main age populations peak at 474, 454 and 374 Ma. Preliminary Hf isotope data for two detrital zircons (447 and 655 Ma) yielded ε(Hf) values of −0.32 and 0.48, indicating that their primary sources contained small amounts of recycled crustal components (of Calymmian age; TDM 1.56 Ga). Zircons from the orthogneiss (miuYC; intrusive into msuYC) show a crystallization age of 261.3 ± 2.7 Ma (Capitanian; late middle Permian) which is broadly coeval with deformation, and Neoarchean–Paleoproterozoic inheritance. Meaningful core-rim relationship between Neoarchean zircon cores and late Permian rims is well defined, indicating the occurrence of Archean crust in this sector of Patagonia. Hf TDM of Permian zircons is mainly Meso-Paleoarchean (2.97–3.35 Ga), with highly negative ε(Hf) values (ca. −33). Hf TDM of inherited Neoarchean zircon cores is also Meso-Paleoarchean (3.14–3.45 Ga) but more juvenile (ε(Hf) = −0.3). Hf isotopes reinforce the presence of unexposed ancient crust in this area. Combining geological and isotope data, as well as geophysical models, we identify the Yaminué Complex within the La Esperanza-Yaminué crustal block flanked by two other, distinct crustal blocks: the Eastern block which forms part of the Patagonia terrane sensu stricto, located in the eastern Patagonian region, and the Western block forming part of the Southern Patagonia terrane. Their origins and timing of amalgamation to form the Patagonia composite terrane are also discussed.
Fil: Chernicoff, Carlos Jorge. Secretaría de Industria y Minería. Servicio Geologico Minero Argentino; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Zappettini, Eduardo Osvaldo. Secretaría de Industria y Minería. Servicio Geologico Minero Argentino; Argentina
Fil: Santos, João O. S.. University of Western Australia; Australia. Redstone Resources; Australia
Fil: Mcnaughton, Neal J.. Curtin University. John de Laeter Centre ; Australia
Fil: Belousova, E.. Macquarie University. ARC National Key Centre for Geochemical Evolution and Metallogeny of Continents; Australia
description We have carried out zircon U-Pb SHRIMP dating and Hf isotope determinations on a biotite paraschist and on a tonalitic orthogneiss of the Yaminué Complex, and re-evaluate this complex in the broader context of the tectonic evolution of the Patagonia composite terrane. In the metasedimentary unit (msuYC), the youngest detrital zircon dated at 318 ± 5 Ma (Mississippian/Pennsylvanian boundary) indicates a Pennsylvanian (or younger) depositional age. The three main age populations peak at 474, 454 and 374 Ma. Preliminary Hf isotope data for two detrital zircons (447 and 655 Ma) yielded ε(Hf) values of −0.32 and 0.48, indicating that their primary sources contained small amounts of recycled crustal components (of Calymmian age; TDM 1.56 Ga). Zircons from the orthogneiss (miuYC; intrusive into msuYC) show a crystallization age of 261.3 ± 2.7 Ma (Capitanian; late middle Permian) which is broadly coeval with deformation, and Neoarchean–Paleoproterozoic inheritance. Meaningful core-rim relationship between Neoarchean zircon cores and late Permian rims is well defined, indicating the occurrence of Archean crust in this sector of Patagonia. Hf TDM of Permian zircons is mainly Meso-Paleoarchean (2.97–3.35 Ga), with highly negative ε(Hf) values (ca. −33). Hf TDM of inherited Neoarchean zircon cores is also Meso-Paleoarchean (3.14–3.45 Ga) but more juvenile (ε(Hf) = −0.3). Hf isotopes reinforce the presence of unexposed ancient crust in this area. Combining geological and isotope data, as well as geophysical models, we identify the Yaminué Complex within the La Esperanza-Yaminué crustal block flanked by two other, distinct crustal blocks: the Eastern block which forms part of the Patagonia terrane sensu stricto, located in the eastern Patagonian region, and the Western block forming part of the Southern Patagonia terrane. Their origins and timing of amalgamation to form the Patagonia composite terrane are also discussed.
publishDate 2013
dc.date.none.fl_str_mv 2013-01
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/11336/3842
Chernicoff, Carlos Jorge; Zappettini, Eduardo Osvaldo; Santos, João O. S.; Mcnaughton, Neal J.; Belousova, E.; Combined U-Pb SHRIMP and Hf isotope study of the Late Paleozoic Yaminué Complex, Río Negro province, Argentina. Implications for the origin and evolution of the Patagonia composite terrane; Elsevier; Geoscience Frontiers; 4; 6; 1-2013; 37-56
1674-9871
url http://hdl.handle.net/11336/3842
identifier_str_mv Chernicoff, Carlos Jorge; Zappettini, Eduardo Osvaldo; Santos, João O. S.; Mcnaughton, Neal J.; Belousova, E.; Combined U-Pb SHRIMP and Hf isotope study of the Late Paleozoic Yaminué Complex, Río Negro province, Argentina. Implications for the origin and evolution of the Patagonia composite terrane; Elsevier; Geoscience Frontiers; 4; 6; 1-2013; 37-56
1674-9871
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S1674987112000850
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.gsf.2012.06.003
info:eu-repo/semantics/altIdentifier/issn/1674-9871
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
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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