Evaluation of petrogenetic models for intermediate and silicic plutonic rocks from the sierra de Valle Fértil-La Huerta: petrologic constraints on the origin of igneous rocks in th...

Autores
Otamendi, Carlos Fabian; Pinotti, Lucio Pedro; Basei,M. A. B; Tibaldi, Alina María
Año de publicación
2010
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The whole Valle Fértil-La Huerta section appears as a calc-alkaline plutonic suite typical of a destructive plate margin. New Sr and Nd isotopic whole-rock data and published whole-rock geochemistry suggest that the less-evolved intermediate (dioritic) rocks can be derived by magmatic differentiation, mainly by hornblende þ plagioclase FeeTi oxide fractional crystallization, from mafic (gabbroic) igneous precursors. Closed-system differentiation, however, cannot produce the typical intermediate (tonalitic) and silicic (granodioritic) plutonic rocks, which requires a preponderant contribution of crustal components. Intermediate and silicic plutonic rocks from Valle Fértil-La Huerta section have formed in a plate subduction setting where the thermal and material input of mantle-derived magmas promoted fusion of fertile metasedimentary rocks and favored mixing of gabbroic or dioritic magmas with crustal granitic melts. Magma mixing is observable in the field and evident in variations of chemical elemental parameters and isotopic ratios, revealing that hybridization coupled with fractionation of magmas took place in the crust. Consideration of the whole-rock geochemical and isotopic data in the context of the Famatinian-Puna magmatic belt as a whole demonstrates that the petrologic model postulated for the Sierra Valle Fértil e La Huerta section has the potential to explain the generation of plutonic and volcanic rocks across the Early Ordovician paleoarc from central and northwestern Argentina. As the petrologic model does not require the intervention of old Precambrian continental crust, the nature of the basement on which thick accretionary turbiditic sequences were deposited remains a puzzling aspect. Discussion in this paper provides insights into the nature of magmatic source rocks and mechanisms of magma generation in Cordilleran-type volcano-plutonic arcs of destructive plate margins.
Fil: Otamendi, Carlos Fabian. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas, Fisicoquímicas y Naturales. Departamento de Geología; Argentina
Fil: Pinotti, Lucio Pedro. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas, Fisicoquímicas y Naturales. Departamento de Geología; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; Argentina
Fil: Basei,M. A. B. No especifíca;
Fil: Tibaldi, Alina María. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas, Fisicoquímicas y Naturales. Departamento de Geología; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; Argentina
Materia
PETROGENESIS
MAGMATIC ARC
CORDILLERAN GRANITOID
FAMATINIAN
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:11336/281357
Acceder
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network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Evaluation of petrogenetic models for intermediate and silicic plutonic rocks from the sierra de Valle Fértil-La Huerta: petrologic constraints on the origin of igneous rocks in the Ordovician Famatinian-Puna paleoarcOtamendi, Carlos FabianPinotti, Lucio PedroBasei,M. A. BTibaldi, Alina MaríaPETROGENESISMAGMATIC ARCCORDILLERAN GRANITOIDFAMATINIANhttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1The whole Valle Fértil-La Huerta section appears as a calc-alkaline plutonic suite typical of a destructive plate margin. New Sr and Nd isotopic whole-rock data and published whole-rock geochemistry suggest that the less-evolved intermediate (dioritic) rocks can be derived by magmatic differentiation, mainly by hornblende þ plagioclase FeeTi oxide fractional crystallization, from mafic (gabbroic) igneous precursors. Closed-system differentiation, however, cannot produce the typical intermediate (tonalitic) and silicic (granodioritic) plutonic rocks, which requires a preponderant contribution of crustal components. Intermediate and silicic plutonic rocks from Valle Fértil-La Huerta section have formed in a plate subduction setting where the thermal and material input of mantle-derived magmas promoted fusion of fertile metasedimentary rocks and favored mixing of gabbroic or dioritic magmas with crustal granitic melts. Magma mixing is observable in the field and evident in variations of chemical elemental parameters and isotopic ratios, revealing that hybridization coupled with fractionation of magmas took place in the crust. Consideration of the whole-rock geochemical and isotopic data in the context of the Famatinian-Puna magmatic belt as a whole demonstrates that the petrologic model postulated for the Sierra Valle Fértil e La Huerta section has the potential to explain the generation of plutonic and volcanic rocks across the Early Ordovician paleoarc from central and northwestern Argentina. As the petrologic model does not require the intervention of old Precambrian continental crust, the nature of the basement on which thick accretionary turbiditic sequences were deposited remains a puzzling aspect. Discussion in this paper provides insights into the nature of magmatic source rocks and mechanisms of magma generation in Cordilleran-type volcano-plutonic arcs of destructive plate margins.Fil: Otamendi, Carlos Fabian. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas, Fisicoquímicas y Naturales. Departamento de Geología; ArgentinaFil: Pinotti, Lucio Pedro. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas, Fisicoquímicas y Naturales. Departamento de Geología; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; ArgentinaFil: Basei,M. A. B. No especifíca;Fil: Tibaldi, Alina María. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas, Fisicoquímicas y Naturales. Departamento de Geología; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; ArgentinaPergamon-Elsevier Science Ltd2010-07info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/281357Otamendi, Carlos Fabian; Pinotti, Lucio Pedro; Basei,M. A. B; Tibaldi, Alina María; Evaluation of petrogenetic models for intermediate and silicic plutonic rocks from the sierra de Valle Fértil-La Huerta: petrologic constraints on the origin of igneous rocks in the Ordovician Famatinian-Puna paleoarc; Pergamon-Elsevier Science Ltd; Journal of South American Earth Sciences; 30; 7-2010; 29-450895-9811CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/abs/pii/S0895981110000362info:eu-repo/semantics/altIdentifier/doi//10.1016/j.jsames.2010.07.004info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2026-02-26T10:21:45Zoai:ri.conicet.gov.ar:11336/281357instacron: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:34982026-02-26 10:21:46.222CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Evaluation of petrogenetic models for intermediate and silicic plutonic rocks from the sierra de Valle Fértil-La Huerta: petrologic constraints on the origin of igneous rocks in the Ordovician Famatinian-Puna paleoarc
title Evaluation of petrogenetic models for intermediate and silicic plutonic rocks from the sierra de Valle Fértil-La Huerta: petrologic constraints on the origin of igneous rocks in the Ordovician Famatinian-Puna paleoarc
spellingShingle Evaluation of petrogenetic models for intermediate and silicic plutonic rocks from the sierra de Valle Fértil-La Huerta: petrologic constraints on the origin of igneous rocks in the Ordovician Famatinian-Puna paleoarc
Otamendi, Carlos Fabian
PETROGENESIS
MAGMATIC ARC
CORDILLERAN GRANITOID
FAMATINIAN
title_short Evaluation of petrogenetic models for intermediate and silicic plutonic rocks from the sierra de Valle Fértil-La Huerta: petrologic constraints on the origin of igneous rocks in the Ordovician Famatinian-Puna paleoarc
title_full Evaluation of petrogenetic models for intermediate and silicic plutonic rocks from the sierra de Valle Fértil-La Huerta: petrologic constraints on the origin of igneous rocks in the Ordovician Famatinian-Puna paleoarc
title_fullStr Evaluation of petrogenetic models for intermediate and silicic plutonic rocks from the sierra de Valle Fértil-La Huerta: petrologic constraints on the origin of igneous rocks in the Ordovician Famatinian-Puna paleoarc
title_full_unstemmed Evaluation of petrogenetic models for intermediate and silicic plutonic rocks from the sierra de Valle Fértil-La Huerta: petrologic constraints on the origin of igneous rocks in the Ordovician Famatinian-Puna paleoarc
title_sort Evaluation of petrogenetic models for intermediate and silicic plutonic rocks from the sierra de Valle Fértil-La Huerta: petrologic constraints on the origin of igneous rocks in the Ordovician Famatinian-Puna paleoarc
dc.creator.none.fl_str_mv Otamendi, Carlos Fabian
Pinotti, Lucio Pedro
Basei,M. A. B
Tibaldi, Alina María
author Otamendi, Carlos Fabian
author_facet Otamendi, Carlos Fabian
Pinotti, Lucio Pedro
Basei,M. A. B
Tibaldi, Alina María
author_role author
author2 Pinotti, Lucio Pedro
Basei,M. A. B
Tibaldi, Alina María
author2_role author
author
author
dc.subject.none.fl_str_mv PETROGENESIS
MAGMATIC ARC
CORDILLERAN GRANITOID
FAMATINIAN
topic PETROGENESIS
MAGMATIC ARC
CORDILLERAN GRANITOID
FAMATINIAN
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 whole Valle Fértil-La Huerta section appears as a calc-alkaline plutonic suite typical of a destructive plate margin. New Sr and Nd isotopic whole-rock data and published whole-rock geochemistry suggest that the less-evolved intermediate (dioritic) rocks can be derived by magmatic differentiation, mainly by hornblende þ plagioclase FeeTi oxide fractional crystallization, from mafic (gabbroic) igneous precursors. Closed-system differentiation, however, cannot produce the typical intermediate (tonalitic) and silicic (granodioritic) plutonic rocks, which requires a preponderant contribution of crustal components. Intermediate and silicic plutonic rocks from Valle Fértil-La Huerta section have formed in a plate subduction setting where the thermal and material input of mantle-derived magmas promoted fusion of fertile metasedimentary rocks and favored mixing of gabbroic or dioritic magmas with crustal granitic melts. Magma mixing is observable in the field and evident in variations of chemical elemental parameters and isotopic ratios, revealing that hybridization coupled with fractionation of magmas took place in the crust. Consideration of the whole-rock geochemical and isotopic data in the context of the Famatinian-Puna magmatic belt as a whole demonstrates that the petrologic model postulated for the Sierra Valle Fértil e La Huerta section has the potential to explain the generation of plutonic and volcanic rocks across the Early Ordovician paleoarc from central and northwestern Argentina. As the petrologic model does not require the intervention of old Precambrian continental crust, the nature of the basement on which thick accretionary turbiditic sequences were deposited remains a puzzling aspect. Discussion in this paper provides insights into the nature of magmatic source rocks and mechanisms of magma generation in Cordilleran-type volcano-plutonic arcs of destructive plate margins.
Fil: Otamendi, Carlos Fabian. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas, Fisicoquímicas y Naturales. Departamento de Geología; Argentina
Fil: Pinotti, Lucio Pedro. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas, Fisicoquímicas y Naturales. Departamento de Geología; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; Argentina
Fil: Basei,M. A. B. No especifíca;
Fil: Tibaldi, Alina María. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas, Fisicoquímicas y Naturales. Departamento de Geología; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; Argentina
description The whole Valle Fértil-La Huerta section appears as a calc-alkaline plutonic suite typical of a destructive plate margin. New Sr and Nd isotopic whole-rock data and published whole-rock geochemistry suggest that the less-evolved intermediate (dioritic) rocks can be derived by magmatic differentiation, mainly by hornblende þ plagioclase FeeTi oxide fractional crystallization, from mafic (gabbroic) igneous precursors. Closed-system differentiation, however, cannot produce the typical intermediate (tonalitic) and silicic (granodioritic) plutonic rocks, which requires a preponderant contribution of crustal components. Intermediate and silicic plutonic rocks from Valle Fértil-La Huerta section have formed in a plate subduction setting where the thermal and material input of mantle-derived magmas promoted fusion of fertile metasedimentary rocks and favored mixing of gabbroic or dioritic magmas with crustal granitic melts. Magma mixing is observable in the field and evident in variations of chemical elemental parameters and isotopic ratios, revealing that hybridization coupled with fractionation of magmas took place in the crust. Consideration of the whole-rock geochemical and isotopic data in the context of the Famatinian-Puna magmatic belt as a whole demonstrates that the petrologic model postulated for the Sierra Valle Fértil e La Huerta section has the potential to explain the generation of plutonic and volcanic rocks across the Early Ordovician paleoarc from central and northwestern Argentina. As the petrologic model does not require the intervention of old Precambrian continental crust, the nature of the basement on which thick accretionary turbiditic sequences were deposited remains a puzzling aspect. Discussion in this paper provides insights into the nature of magmatic source rocks and mechanisms of magma generation in Cordilleran-type volcano-plutonic arcs of destructive plate margins.
publishDate 2010
dc.date.none.fl_str_mv 2010-07
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
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info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/281357
Otamendi, Carlos Fabian; Pinotti, Lucio Pedro; Basei,M. A. B; Tibaldi, Alina María; Evaluation of petrogenetic models for intermediate and silicic plutonic rocks from the sierra de Valle Fértil-La Huerta: petrologic constraints on the origin of igneous rocks in the Ordovician Famatinian-Puna paleoarc; Pergamon-Elsevier Science Ltd; Journal of South American Earth Sciences; 30; 7-2010; 29-45
0895-9811
CONICET Digital
CONICET
url http://hdl.handle.net/11336/281357
identifier_str_mv Otamendi, Carlos Fabian; Pinotti, Lucio Pedro; Basei,M. A. B; Tibaldi, Alina María; Evaluation of petrogenetic models for intermediate and silicic plutonic rocks from the sierra de Valle Fértil-La Huerta: petrologic constraints on the origin of igneous rocks in the Ordovician Famatinian-Puna paleoarc; Pergamon-Elsevier Science Ltd; Journal of South American Earth Sciences; 30; 7-2010; 29-45
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/abs/pii/S0895981110000362
info:eu-repo/semantics/altIdentifier/doi//10.1016/j.jsames.2010.07.004
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
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application/pdf
application/pdf
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dc.publisher.none.fl_str_mv Pergamon-Elsevier Science Ltd
publisher.none.fl_str_mv Pergamon-Elsevier Science Ltd
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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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