The evolution of a mid-crustal thermal aureole at Cerro Toro, Sierra de Famatina, NW Argentina

Autores
Alasino, Pablo Horacio; Casquet, C.; Larrovere, Mariano Alexis; Pankhurst, R. J.; Galindo, C.; Dahlquist, J. A.; Baldo, Edgardo Gaspar Agustin; Rapela, Carlos Washington
Año de publicación
2014
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
A more than 12 km wide sheeted tonalite complex in western Sierra de Famatina, NW Argentina, was emplaced at middle crust levels (ca 5 kbar), coeval with regional metamorphism during an early phase of the Ordovician Famatinian orogeny (ca. 480 Ma). Advective heat from the tonalite complex caused a rise in the host regional temperatures (≤ 700ºC) by a maximum of ca. 100ºC, developing an aureole (~3 km wide) parallel to the igneous contact. This was accompanied by significant melting (ca 40 %) of the host rocks that hybridized to a variable extent with the tonalitic magmas. Three metamorphic zones were distinguished in a cross-section through the aureole: (1) an external zone consisting of metatexitic gneisses, amphibolites and minor tonalites, (2) an intermediate zone formed by screens of highly melted gneisses, amphibolites and metagabbros lying between tonalite and newly formed leucogranitoid and hybrid rock sheets, (3) an internal zone formed almost exclusively of massive tonalite and minor hybrid rocks. Incongruent melting of biotite in gneisses of the intermediate zone produced peritectic cordierite and garnet. Hybrids resulting from variable mixing of anatectic granitoids and tonalite magma developed in the innermost part of the aureole at 750-800ºC. Increased water activity within this zone eventually promoted increased melting of plagioclase + quartz in the gneisses. Leucogranitoid magmas formed in part by extraction from the hybrid magmas led to heterogeneity of the Sr-isotope composition. The Cerro Toro contact aureole shows that assimilation of metasedimentary rocks through partial melting can play an important role during emplacement of tonalitic magmas at mid-crustal levels.
Fil: Alasino, Pablo Horacio. Universidad Nacional de la Rioja; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Regional de Investigaciones Cientificas y Transferencia Tecnológica de Anillaco; Argentina
Fil: Casquet, C.. Consejo Superior de Investigaciones Cientificas; España. Universidad Complutense de Madrid; España
Fil: Larrovere, Mariano Alexis. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Regional de Investigaciones Cientificas y Transferencia Tecnológica de Anillaco; Argentina. Universidad Nacional de la Rioja; Argentina
Fil: Pankhurst, R. J.. British Geological Survey; Reino Unido
Fil: Galindo, C.. Consejo Superior de Investigaciones Cientificas; España. Universidad Complutense de Madrid; España
Fil: Dahlquist, J. A.. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Córdoba. Centro de Investigaciones en Ciencias de la Tierra; Argentina. Universidad Nacional de Córdoba; Argentina
Fil: Baldo, Edgardo Gaspar Agustin. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Córdoba. Centro de Investigaciones en Ciencias de la Tierra; Argentina. Universidad Nacional de Córdoba; Argentina
Fil: Rapela, Carlos Washington. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico La Plata. Centro de Investigaciones Geológicas (i); Argentina. Universidad Nacional de La Plata; Argentina
Materia
I-Type Magmatism
Middle Crust Emplacement
Anatexis
Hybridization
Sierra de Famatina
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:11336/12099
Acceder
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repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling The evolution of a mid-crustal thermal aureole at Cerro Toro, Sierra de Famatina, NW ArgentinaAlasino, Pablo HoracioCasquet, C.Larrovere, Mariano AlexisPankhurst, R. J.Galindo, C.Dahlquist, J. A.Baldo, Edgardo Gaspar AgustinRapela, Carlos WashingtonI-Type MagmatismMiddle Crust EmplacementAnatexisHybridizationSierra de Famatinahttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1A more than 12 km wide sheeted tonalite complex in western Sierra de Famatina, NW Argentina, was emplaced at middle crust levels (ca 5 kbar), coeval with regional metamorphism during an early phase of the Ordovician Famatinian orogeny (ca. 480 Ma). Advective heat from the tonalite complex caused a rise in the host regional temperatures (≤ 700ºC) by a maximum of ca. 100ºC, developing an aureole (~3 km wide) parallel to the igneous contact. This was accompanied by significant melting (ca 40 %) of the host rocks that hybridized to a variable extent with the tonalitic magmas. Three metamorphic zones were distinguished in a cross-section through the aureole: (1) an external zone consisting of metatexitic gneisses, amphibolites and minor tonalites, (2) an intermediate zone formed by screens of highly melted gneisses, amphibolites and metagabbros lying between tonalite and newly formed leucogranitoid and hybrid rock sheets, (3) an internal zone formed almost exclusively of massive tonalite and minor hybrid rocks. Incongruent melting of biotite in gneisses of the intermediate zone produced peritectic cordierite and garnet. Hybrids resulting from variable mixing of anatectic granitoids and tonalite magma developed in the innermost part of the aureole at 750-800ºC. Increased water activity within this zone eventually promoted increased melting of plagioclase + quartz in the gneisses. Leucogranitoid magmas formed in part by extraction from the hybrid magmas led to heterogeneity of the Sr-isotope composition. The Cerro Toro contact aureole shows that assimilation of metasedimentary rocks through partial melting can play an important role during emplacement of tonalitic magmas at mid-crustal levels.Fil: Alasino, Pablo Horacio. Universidad Nacional de la Rioja; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Regional de Investigaciones Cientificas y Transferencia Tecnológica de Anillaco; ArgentinaFil: Casquet, C.. Consejo Superior de Investigaciones Cientificas; España. Universidad Complutense de Madrid; EspañaFil: Larrovere, Mariano Alexis. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Regional de Investigaciones Cientificas y Transferencia Tecnológica de Anillaco; Argentina. Universidad Nacional de la Rioja; ArgentinaFil: Pankhurst, R. J.. British Geological Survey; Reino UnidoFil: Galindo, C.. Consejo Superior de Investigaciones Cientificas; España. Universidad Complutense de Madrid; EspañaFil: Dahlquist, J. A.. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Córdoba. Centro de Investigaciones en Ciencias de la Tierra; Argentina. Universidad Nacional de Córdoba; ArgentinaFil: Baldo, Edgardo Gaspar Agustin. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Córdoba. Centro de Investigaciones en Ciencias de la Tierra; Argentina. Universidad Nacional de Córdoba; ArgentinaFil: Rapela, Carlos Washington. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico La Plata. Centro de Investigaciones Geológicas (i); Argentina. Universidad Nacional de La Plata; ArgentinaElsevier Science2014-03info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/12099Alasino, Pablo Horacio; Casquet, C.; Larrovere, Mariano Alexis; Pankhurst, R. J.; Galindo, C.; et al.; The evolution of a mid-crustal thermal aureole at Cerro Toro, Sierra de Famatina, NW Argentina; Elsevier Science; Lithos; 190-191; 3-2014; 154-1720024-4937enginfo:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0024493713004088info:eu-repo/semantics/altIdentifier/doi/10.1016/j.lithos.2013.12.006info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-nd/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:53:08Zoai:ri.conicet.gov.ar:11336/12099instacron: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:34982025-09-29 09:53:08.659CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv The evolution of a mid-crustal thermal aureole at Cerro Toro, Sierra de Famatina, NW Argentina
title The evolution of a mid-crustal thermal aureole at Cerro Toro, Sierra de Famatina, NW Argentina
spellingShingle The evolution of a mid-crustal thermal aureole at Cerro Toro, Sierra de Famatina, NW Argentina
Alasino, Pablo Horacio
I-Type Magmatism
Middle Crust Emplacement
Anatexis
Hybridization
Sierra de Famatina
title_short The evolution of a mid-crustal thermal aureole at Cerro Toro, Sierra de Famatina, NW Argentina
title_full The evolution of a mid-crustal thermal aureole at Cerro Toro, Sierra de Famatina, NW Argentina
title_fullStr The evolution of a mid-crustal thermal aureole at Cerro Toro, Sierra de Famatina, NW Argentina
title_full_unstemmed The evolution of a mid-crustal thermal aureole at Cerro Toro, Sierra de Famatina, NW Argentina
title_sort The evolution of a mid-crustal thermal aureole at Cerro Toro, Sierra de Famatina, NW Argentina
dc.creator.none.fl_str_mv Alasino, Pablo Horacio
Casquet, C.
Larrovere, Mariano Alexis
Pankhurst, R. J.
Galindo, C.
Dahlquist, J. A.
Baldo, Edgardo Gaspar Agustin
Rapela, Carlos Washington
author Alasino, Pablo Horacio
author_facet Alasino, Pablo Horacio
Casquet, C.
Larrovere, Mariano Alexis
Pankhurst, R. J.
Galindo, C.
Dahlquist, J. A.
Baldo, Edgardo Gaspar Agustin
Rapela, Carlos Washington
author_role author
author2 Casquet, C.
Larrovere, Mariano Alexis
Pankhurst, R. J.
Galindo, C.
Dahlquist, J. A.
Baldo, Edgardo Gaspar Agustin
Rapela, Carlos Washington
author2_role author
author
author
author
author
author
author
dc.subject.none.fl_str_mv I-Type Magmatism
Middle Crust Emplacement
Anatexis
Hybridization
Sierra de Famatina
topic I-Type Magmatism
Middle Crust Emplacement
Anatexis
Hybridization
Sierra de Famatina
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv A more than 12 km wide sheeted tonalite complex in western Sierra de Famatina, NW Argentina, was emplaced at middle crust levels (ca 5 kbar), coeval with regional metamorphism during an early phase of the Ordovician Famatinian orogeny (ca. 480 Ma). Advective heat from the tonalite complex caused a rise in the host regional temperatures (≤ 700ºC) by a maximum of ca. 100ºC, developing an aureole (~3 km wide) parallel to the igneous contact. This was accompanied by significant melting (ca 40 %) of the host rocks that hybridized to a variable extent with the tonalitic magmas. Three metamorphic zones were distinguished in a cross-section through the aureole: (1) an external zone consisting of metatexitic gneisses, amphibolites and minor tonalites, (2) an intermediate zone formed by screens of highly melted gneisses, amphibolites and metagabbros lying between tonalite and newly formed leucogranitoid and hybrid rock sheets, (3) an internal zone formed almost exclusively of massive tonalite and minor hybrid rocks. Incongruent melting of biotite in gneisses of the intermediate zone produced peritectic cordierite and garnet. Hybrids resulting from variable mixing of anatectic granitoids and tonalite magma developed in the innermost part of the aureole at 750-800ºC. Increased water activity within this zone eventually promoted increased melting of plagioclase + quartz in the gneisses. Leucogranitoid magmas formed in part by extraction from the hybrid magmas led to heterogeneity of the Sr-isotope composition. The Cerro Toro contact aureole shows that assimilation of metasedimentary rocks through partial melting can play an important role during emplacement of tonalitic magmas at mid-crustal levels.
Fil: Alasino, Pablo Horacio. Universidad Nacional de la Rioja; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Regional de Investigaciones Cientificas y Transferencia Tecnológica de Anillaco; Argentina
Fil: Casquet, C.. Consejo Superior de Investigaciones Cientificas; España. Universidad Complutense de Madrid; España
Fil: Larrovere, Mariano Alexis. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Regional de Investigaciones Cientificas y Transferencia Tecnológica de Anillaco; Argentina. Universidad Nacional de la Rioja; Argentina
Fil: Pankhurst, R. J.. British Geological Survey; Reino Unido
Fil: Galindo, C.. Consejo Superior de Investigaciones Cientificas; España. Universidad Complutense de Madrid; España
Fil: Dahlquist, J. A.. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Córdoba. Centro de Investigaciones en Ciencias de la Tierra; Argentina. Universidad Nacional de Córdoba; Argentina
Fil: Baldo, Edgardo Gaspar Agustin. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Córdoba. Centro de Investigaciones en Ciencias de la Tierra; Argentina. Universidad Nacional de Córdoba; Argentina
Fil: Rapela, Carlos Washington. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico La Plata. Centro de Investigaciones Geológicas (i); Argentina. Universidad Nacional de La Plata; Argentina
description A more than 12 km wide sheeted tonalite complex in western Sierra de Famatina, NW Argentina, was emplaced at middle crust levels (ca 5 kbar), coeval with regional metamorphism during an early phase of the Ordovician Famatinian orogeny (ca. 480 Ma). Advective heat from the tonalite complex caused a rise in the host regional temperatures (≤ 700ºC) by a maximum of ca. 100ºC, developing an aureole (~3 km wide) parallel to the igneous contact. This was accompanied by significant melting (ca 40 %) of the host rocks that hybridized to a variable extent with the tonalitic magmas. Three metamorphic zones were distinguished in a cross-section through the aureole: (1) an external zone consisting of metatexitic gneisses, amphibolites and minor tonalites, (2) an intermediate zone formed by screens of highly melted gneisses, amphibolites and metagabbros lying between tonalite and newly formed leucogranitoid and hybrid rock sheets, (3) an internal zone formed almost exclusively of massive tonalite and minor hybrid rocks. Incongruent melting of biotite in gneisses of the intermediate zone produced peritectic cordierite and garnet. Hybrids resulting from variable mixing of anatectic granitoids and tonalite magma developed in the innermost part of the aureole at 750-800ºC. Increased water activity within this zone eventually promoted increased melting of plagioclase + quartz in the gneisses. Leucogranitoid magmas formed in part by extraction from the hybrid magmas led to heterogeneity of the Sr-isotope composition. The Cerro Toro contact aureole shows that assimilation of metasedimentary rocks through partial melting can play an important role during emplacement of tonalitic magmas at mid-crustal levels.
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
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/11336/12099
Alasino, Pablo Horacio; Casquet, C.; Larrovere, Mariano Alexis; Pankhurst, R. J.; Galindo, C.; et al.; The evolution of a mid-crustal thermal aureole at Cerro Toro, Sierra de Famatina, NW Argentina; Elsevier Science; Lithos; 190-191; 3-2014; 154-172
0024-4937
url http://hdl.handle.net/11336/12099
identifier_str_mv Alasino, Pablo Horacio; Casquet, C.; Larrovere, Mariano Alexis; Pankhurst, R. J.; Galindo, C.; et al.; The evolution of a mid-crustal thermal aureole at Cerro Toro, Sierra de Famatina, NW Argentina; Elsevier Science; Lithos; 190-191; 3-2014; 154-172
0024-4937
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/S0024493713004088
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.lithos.2013.12.006
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
application/pdf
application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv Elsevier Science
publisher.none.fl_str_mv Elsevier Science
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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