The Las Matras tonalitic-trondhjemitic pluton, Central Argentina: Grenvillian-age constraints, geochemical characteristics, and regional implications

Autores
Sato, Ana Maria; Tickyj, Hugo; Llambias, Eduardo Jorge; Sato, K.
Año de publicación
2000
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The N-S trending belt with Grenvillian-age rocks developed in central western Argentina represents the basement of an allochthonous terrane derived from Laurentia during the Early Paleozoic. The Las Matras pluton (36°46′S, 67°07′W) is located at the southern extension of this belt in the Las Matras Block. It consists of a low-Al tonalitic to trondhjemitic facies characteristic of an arc magmatism. Isotopic studies yielded Grenvillian Rb-Sr (1212 ± 47 Ma) and Sm-Nd (1188 = 47 Ma) ages which, due to the undeformed and non-metamorphosed character of the pluton, are interpreted to represent a crystallization age of around 1200 Ma. Although this age is slightly older than available dates from other exposures of the same belt, and the undeformed feature is also distinctive for Las Matras, the depleted Sr and Nd isotopic signatures of the pluton agree with those from other magmatic rocks involved in that belt. The differences found between Las Matras and the northern exposures indicate that this belt with Grenvillian-age rocks comprises regions of non-homogeneous evolution. Although the correlation of the Lower Paleozoic platform carbonates from the sedimentary cover of the Grenvillian-age basement rocks suggests the surroundings of the Southern Grenville Province (Texas and northern Mexico) as the probable detachment site for the Argentine belt, comparison of magmatic and tectonic processes involved in these basement rocks does not indicate similar evolutions. This fact can suggest an independent evolution of the Argentine belt prior to amalgamation to the Laurentian Grenville orogen. © 2000 Elsevier Science Ltd. All rights reserved.
Fil: Sato, Ana Maria. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigaciones Geológicas. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Centro de Investigaciones Geológicas; Argentina
Fil: Tickyj, Hugo. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de La Pampa; Argentina
Fil: Llambias, Eduardo Jorge. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigaciones Geológicas. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Centro de Investigaciones Geológicas; Argentina
Fil: Sato, K.. Universidade de Sao Paulo; Brasil
Materia
Central And Western Argentina
Grenvile Orogeny
Terrane Accretion
Trondhjemites
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:11336/72041
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/72041
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network_name_str CONICET Digital (CONICET)
spelling The Las Matras tonalitic-trondhjemitic pluton, Central Argentina: Grenvillian-age constraints, geochemical characteristics, and regional implicationsSato, Ana MariaTickyj, HugoLlambias, Eduardo JorgeSato, K.Central And Western ArgentinaGrenvile OrogenyTerrane AccretionTrondhjemiteshttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1The N-S trending belt with Grenvillian-age rocks developed in central western Argentina represents the basement of an allochthonous terrane derived from Laurentia during the Early Paleozoic. The Las Matras pluton (36°46′S, 67°07′W) is located at the southern extension of this belt in the Las Matras Block. It consists of a low-Al tonalitic to trondhjemitic facies characteristic of an arc magmatism. Isotopic studies yielded Grenvillian Rb-Sr (1212 ± 47 Ma) and Sm-Nd (1188 = 47 Ma) ages which, due to the undeformed and non-metamorphosed character of the pluton, are interpreted to represent a crystallization age of around 1200 Ma. Although this age is slightly older than available dates from other exposures of the same belt, and the undeformed feature is also distinctive for Las Matras, the depleted Sr and Nd isotopic signatures of the pluton agree with those from other magmatic rocks involved in that belt. The differences found between Las Matras and the northern exposures indicate that this belt with Grenvillian-age rocks comprises regions of non-homogeneous evolution. Although the correlation of the Lower Paleozoic platform carbonates from the sedimentary cover of the Grenvillian-age basement rocks suggests the surroundings of the Southern Grenville Province (Texas and northern Mexico) as the probable detachment site for the Argentine belt, comparison of magmatic and tectonic processes involved in these basement rocks does not indicate similar evolutions. This fact can suggest an independent evolution of the Argentine belt prior to amalgamation to the Laurentian Grenville orogen. © 2000 Elsevier Science Ltd. All rights reserved.Fil: Sato, Ana Maria. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigaciones Geológicas. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Centro de Investigaciones Geológicas; ArgentinaFil: Tickyj, Hugo. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de La Pampa; ArgentinaFil: Llambias, Eduardo Jorge. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigaciones Geológicas. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Centro de Investigaciones Geológicas; ArgentinaFil: Sato, K.. Universidade de Sao Paulo; BrasilPergamon-Elsevier Science Ltd2000-04info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/72041Sato, Ana Maria; Tickyj, Hugo; Llambias, Eduardo Jorge; Sato, K.; The Las Matras tonalitic-trondhjemitic pluton, Central Argentina: Grenvillian-age constraints, geochemical characteristics, and regional implications; Pergamon-Elsevier Science Ltd; Journal of South American Earth Sciences; 13; 7; 4-2000; 587-6100895-9811CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0895981100000535info:eu-repo/semantics/altIdentifier/doi/10.1016/S0895-9811(00)00053-5info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T09:44:57Zoai:ri.conicet.gov.ar:11336/72041instacron: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 09:44:58.15CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv The Las Matras tonalitic-trondhjemitic pluton, Central Argentina: Grenvillian-age constraints, geochemical characteristics, and regional implications
title The Las Matras tonalitic-trondhjemitic pluton, Central Argentina: Grenvillian-age constraints, geochemical characteristics, and regional implications
spellingShingle The Las Matras tonalitic-trondhjemitic pluton, Central Argentina: Grenvillian-age constraints, geochemical characteristics, and regional implications
Sato, Ana Maria
Central And Western Argentina
Grenvile Orogeny
Terrane Accretion
Trondhjemites
title_short The Las Matras tonalitic-trondhjemitic pluton, Central Argentina: Grenvillian-age constraints, geochemical characteristics, and regional implications
title_full The Las Matras tonalitic-trondhjemitic pluton, Central Argentina: Grenvillian-age constraints, geochemical characteristics, and regional implications
title_fullStr The Las Matras tonalitic-trondhjemitic pluton, Central Argentina: Grenvillian-age constraints, geochemical characteristics, and regional implications
title_full_unstemmed The Las Matras tonalitic-trondhjemitic pluton, Central Argentina: Grenvillian-age constraints, geochemical characteristics, and regional implications
title_sort The Las Matras tonalitic-trondhjemitic pluton, Central Argentina: Grenvillian-age constraints, geochemical characteristics, and regional implications
dc.creator.none.fl_str_mv Sato, Ana Maria
Tickyj, Hugo
Llambias, Eduardo Jorge
Sato, K.
author Sato, Ana Maria
author_facet Sato, Ana Maria
Tickyj, Hugo
Llambias, Eduardo Jorge
Sato, K.
author_role author
author2 Tickyj, Hugo
Llambias, Eduardo Jorge
Sato, K.
author2_role author
author
author
dc.subject.none.fl_str_mv Central And Western Argentina
Grenvile Orogeny
Terrane Accretion
Trondhjemites
topic Central And Western Argentina
Grenvile Orogeny
Terrane Accretion
Trondhjemites
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 N-S trending belt with Grenvillian-age rocks developed in central western Argentina represents the basement of an allochthonous terrane derived from Laurentia during the Early Paleozoic. The Las Matras pluton (36°46′S, 67°07′W) is located at the southern extension of this belt in the Las Matras Block. It consists of a low-Al tonalitic to trondhjemitic facies characteristic of an arc magmatism. Isotopic studies yielded Grenvillian Rb-Sr (1212 ± 47 Ma) and Sm-Nd (1188 = 47 Ma) ages which, due to the undeformed and non-metamorphosed character of the pluton, are interpreted to represent a crystallization age of around 1200 Ma. Although this age is slightly older than available dates from other exposures of the same belt, and the undeformed feature is also distinctive for Las Matras, the depleted Sr and Nd isotopic signatures of the pluton agree with those from other magmatic rocks involved in that belt. The differences found between Las Matras and the northern exposures indicate that this belt with Grenvillian-age rocks comprises regions of non-homogeneous evolution. Although the correlation of the Lower Paleozoic platform carbonates from the sedimentary cover of the Grenvillian-age basement rocks suggests the surroundings of the Southern Grenville Province (Texas and northern Mexico) as the probable detachment site for the Argentine belt, comparison of magmatic and tectonic processes involved in these basement rocks does not indicate similar evolutions. This fact can suggest an independent evolution of the Argentine belt prior to amalgamation to the Laurentian Grenville orogen. © 2000 Elsevier Science Ltd. All rights reserved.
Fil: Sato, Ana Maria. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigaciones Geológicas. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Centro de Investigaciones Geológicas; Argentina
Fil: Tickyj, Hugo. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de La Pampa; Argentina
Fil: Llambias, Eduardo Jorge. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigaciones Geológicas. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Centro de Investigaciones Geológicas; Argentina
Fil: Sato, K.. Universidade de Sao Paulo; Brasil
description The N-S trending belt with Grenvillian-age rocks developed in central western Argentina represents the basement of an allochthonous terrane derived from Laurentia during the Early Paleozoic. The Las Matras pluton (36°46′S, 67°07′W) is located at the southern extension of this belt in the Las Matras Block. It consists of a low-Al tonalitic to trondhjemitic facies characteristic of an arc magmatism. Isotopic studies yielded Grenvillian Rb-Sr (1212 ± 47 Ma) and Sm-Nd (1188 = 47 Ma) ages which, due to the undeformed and non-metamorphosed character of the pluton, are interpreted to represent a crystallization age of around 1200 Ma. Although this age is slightly older than available dates from other exposures of the same belt, and the undeformed feature is also distinctive for Las Matras, the depleted Sr and Nd isotopic signatures of the pluton agree with those from other magmatic rocks involved in that belt. The differences found between Las Matras and the northern exposures indicate that this belt with Grenvillian-age rocks comprises regions of non-homogeneous evolution. Although the correlation of the Lower Paleozoic platform carbonates from the sedimentary cover of the Grenvillian-age basement rocks suggests the surroundings of the Southern Grenville Province (Texas and northern Mexico) as the probable detachment site for the Argentine belt, comparison of magmatic and tectonic processes involved in these basement rocks does not indicate similar evolutions. This fact can suggest an independent evolution of the Argentine belt prior to amalgamation to the Laurentian Grenville orogen. © 2000 Elsevier Science Ltd. All rights reserved.
publishDate 2000
dc.date.none.fl_str_mv 2000-04
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/11336/72041
Sato, Ana Maria; Tickyj, Hugo; Llambias, Eduardo Jorge; Sato, K.; The Las Matras tonalitic-trondhjemitic pluton, Central Argentina: Grenvillian-age constraints, geochemical characteristics, and regional implications; Pergamon-Elsevier Science Ltd; Journal of South American Earth Sciences; 13; 7; 4-2000; 587-610
0895-9811
CONICET Digital
CONICET
url http://hdl.handle.net/11336/72041
identifier_str_mv Sato, Ana Maria; Tickyj, Hugo; Llambias, Eduardo Jorge; Sato, K.; The Las Matras tonalitic-trondhjemitic pluton, Central Argentina: Grenvillian-age constraints, geochemical characteristics, and regional implications; Pergamon-Elsevier Science Ltd; Journal of South American Earth Sciences; 13; 7; 4-2000; 587-610
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/S0895981100000535
info:eu-repo/semantics/altIdentifier/doi/10.1016/S0895-9811(00)00053-5
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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