Volcanological and geochemical evolution of the Diamante Caldera-Maipo volcano complex in the southern Andes of Argentina (34°10′S)

Autores
Sruoga, Patricia; Llambias, Eduardo Jorge; Fauqué, Luis; Schonwandt, David; Repol, David G.
Año de publicación
2005
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Two main stages are distinguished in the evolution of the Diamante Caldera-Maipo volcano complex. The 'Diamante stage' corresponds to the emplacement of large volume rhyolitic ignimbrites associated with a 20×16 km diameter collapse caldera. This ∼0.45 Ma catastrophic event was followed by the 'Maipo stage,' which represents the last 100 ka of the complex's lifetime. Fieldwork and Ar/Ar data support an eruptive record within the Maipo stage that consists of at least four pre-last glacial maximum (pre-LGM) large volume events and three postglacial small volume events. Historic activity remains uncertain. At present, neither fumarolic activity nor hydrothermal manifestations are detected. Dominantly effusive, the Maipo stage includes blocky and flow-banded lavas, a ring-fault dome, and subordinate pyroclastic deposits that define a high-K, calc-alkaline suite ranging in silica from 53 to 68% and encompassing two pyroxene with minor olivine andesites and two pyroxene and hornblende-bearing dacites. Within the volcanic complex, a general geochemical trend toward more evolved, potentially higher explosive products is recognized. Differentiation is strongly controlled by fractional crystallization, but disequilibrium textures suggest periodic magma mixing must be significant in the production of cyclic chemical variations.
Fil: Sruoga, Patricia. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Secretaría de Industria y Minería. Servicio Geológico Minero Argentino; 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: Fauqué, Luis. Secretaría de Industria y Minería. Servicio Geológico Minero Argentino; Argentina
Fil: Schonwandt, David. Secretaría de Industria y Minería. Servicio Geológico Minero Argentino; Argentina
Fil: Repol, David G.. University of Calgary; Canadá
Materia
Diamante Caldera
Geochemistry
Maipo Volcano Complex
Southern Andes
Volcanological Evolution
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:11336/75928
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/75928
network_acronym_str CONICETDig
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network_name_str CONICET Digital (CONICET)
spelling Volcanological and geochemical evolution of the Diamante Caldera-Maipo volcano complex in the southern Andes of Argentina (34°10′S)Sruoga, PatriciaLlambias, Eduardo JorgeFauqué, LuisSchonwandt, DavidRepol, David G.Diamante CalderaGeochemistryMaipo Volcano ComplexSouthern AndesVolcanological Evolutionhttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1Two main stages are distinguished in the evolution of the Diamante Caldera-Maipo volcano complex. The 'Diamante stage' corresponds to the emplacement of large volume rhyolitic ignimbrites associated with a 20×16 km diameter collapse caldera. This ∼0.45 Ma catastrophic event was followed by the 'Maipo stage,' which represents the last 100 ka of the complex's lifetime. Fieldwork and Ar/Ar data support an eruptive record within the Maipo stage that consists of at least four pre-last glacial maximum (pre-LGM) large volume events and three postglacial small volume events. Historic activity remains uncertain. At present, neither fumarolic activity nor hydrothermal manifestations are detected. Dominantly effusive, the Maipo stage includes blocky and flow-banded lavas, a ring-fault dome, and subordinate pyroclastic deposits that define a high-K, calc-alkaline suite ranging in silica from 53 to 68% and encompassing two pyroxene with minor olivine andesites and two pyroxene and hornblende-bearing dacites. Within the volcanic complex, a general geochemical trend toward more evolved, potentially higher explosive products is recognized. Differentiation is strongly controlled by fractional crystallization, but disequilibrium textures suggest periodic magma mixing must be significant in the production of cyclic chemical variations.Fil: Sruoga, Patricia. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Secretaría de Industria y Minería. Servicio Geológico Minero Argentino; 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: Fauqué, Luis. Secretaría de Industria y Minería. Servicio Geológico Minero Argentino; ArgentinaFil: Schonwandt, David. Secretaría de Industria y Minería. Servicio Geológico Minero Argentino; ArgentinaFil: Repol, David G.. University of Calgary; CanadáPergamon-Elsevier Science Ltd2005-09info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/75928Sruoga, Patricia; Llambias, Eduardo Jorge; Fauqué, Luis; Schonwandt, David; Repol, David G.; Volcanological and geochemical evolution of the Diamante Caldera-Maipo volcano complex in the southern Andes of Argentina (34°10′S); Pergamon-Elsevier Science Ltd; Journal of South American Earth Sciences; 19; 4; 9-2005; 399-4140895-9811CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.jsames.2005.06.003info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0895981105000878info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:00:25Zoai:ri.conicet.gov.ar:11336/75928instacron: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 10:00:25.83CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Volcanological and geochemical evolution of the Diamante Caldera-Maipo volcano complex in the southern Andes of Argentina (34°10′S)
title Volcanological and geochemical evolution of the Diamante Caldera-Maipo volcano complex in the southern Andes of Argentina (34°10′S)
spellingShingle Volcanological and geochemical evolution of the Diamante Caldera-Maipo volcano complex in the southern Andes of Argentina (34°10′S)
Sruoga, Patricia
Diamante Caldera
Geochemistry
Maipo Volcano Complex
Southern Andes
Volcanological Evolution
title_short Volcanological and geochemical evolution of the Diamante Caldera-Maipo volcano complex in the southern Andes of Argentina (34°10′S)
title_full Volcanological and geochemical evolution of the Diamante Caldera-Maipo volcano complex in the southern Andes of Argentina (34°10′S)
title_fullStr Volcanological and geochemical evolution of the Diamante Caldera-Maipo volcano complex in the southern Andes of Argentina (34°10′S)
title_full_unstemmed Volcanological and geochemical evolution of the Diamante Caldera-Maipo volcano complex in the southern Andes of Argentina (34°10′S)
title_sort Volcanological and geochemical evolution of the Diamante Caldera-Maipo volcano complex in the southern Andes of Argentina (34°10′S)
dc.creator.none.fl_str_mv Sruoga, Patricia
Llambias, Eduardo Jorge
Fauqué, Luis
Schonwandt, David
Repol, David G.
author Sruoga, Patricia
author_facet Sruoga, Patricia
Llambias, Eduardo Jorge
Fauqué, Luis
Schonwandt, David
Repol, David G.
author_role author
author2 Llambias, Eduardo Jorge
Fauqué, Luis
Schonwandt, David
Repol, David G.
author2_role author
author
author
author
dc.subject.none.fl_str_mv Diamante Caldera
Geochemistry
Maipo Volcano Complex
Southern Andes
Volcanological Evolution
topic Diamante Caldera
Geochemistry
Maipo Volcano Complex
Southern Andes
Volcanological Evolution
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Two main stages are distinguished in the evolution of the Diamante Caldera-Maipo volcano complex. The 'Diamante stage' corresponds to the emplacement of large volume rhyolitic ignimbrites associated with a 20×16 km diameter collapse caldera. This ∼0.45 Ma catastrophic event was followed by the 'Maipo stage,' which represents the last 100 ka of the complex's lifetime. Fieldwork and Ar/Ar data support an eruptive record within the Maipo stage that consists of at least four pre-last glacial maximum (pre-LGM) large volume events and three postglacial small volume events. Historic activity remains uncertain. At present, neither fumarolic activity nor hydrothermal manifestations are detected. Dominantly effusive, the Maipo stage includes blocky and flow-banded lavas, a ring-fault dome, and subordinate pyroclastic deposits that define a high-K, calc-alkaline suite ranging in silica from 53 to 68% and encompassing two pyroxene with minor olivine andesites and two pyroxene and hornblende-bearing dacites. Within the volcanic complex, a general geochemical trend toward more evolved, potentially higher explosive products is recognized. Differentiation is strongly controlled by fractional crystallization, but disequilibrium textures suggest periodic magma mixing must be significant in the production of cyclic chemical variations.
Fil: Sruoga, Patricia. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Secretaría de Industria y Minería. Servicio Geológico Minero Argentino; 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: Fauqué, Luis. Secretaría de Industria y Minería. Servicio Geológico Minero Argentino; Argentina
Fil: Schonwandt, David. Secretaría de Industria y Minería. Servicio Geológico Minero Argentino; Argentina
Fil: Repol, David G.. University of Calgary; Canadá
description Two main stages are distinguished in the evolution of the Diamante Caldera-Maipo volcano complex. The 'Diamante stage' corresponds to the emplacement of large volume rhyolitic ignimbrites associated with a 20×16 km diameter collapse caldera. This ∼0.45 Ma catastrophic event was followed by the 'Maipo stage,' which represents the last 100 ka of the complex's lifetime. Fieldwork and Ar/Ar data support an eruptive record within the Maipo stage that consists of at least four pre-last glacial maximum (pre-LGM) large volume events and three postglacial small volume events. Historic activity remains uncertain. At present, neither fumarolic activity nor hydrothermal manifestations are detected. Dominantly effusive, the Maipo stage includes blocky and flow-banded lavas, a ring-fault dome, and subordinate pyroclastic deposits that define a high-K, calc-alkaline suite ranging in silica from 53 to 68% and encompassing two pyroxene with minor olivine andesites and two pyroxene and hornblende-bearing dacites. Within the volcanic complex, a general geochemical trend toward more evolved, potentially higher explosive products is recognized. Differentiation is strongly controlled by fractional crystallization, but disequilibrium textures suggest periodic magma mixing must be significant in the production of cyclic chemical variations.
publishDate 2005
dc.date.none.fl_str_mv 2005-09
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/11336/75928
Sruoga, Patricia; Llambias, Eduardo Jorge; Fauqué, Luis; Schonwandt, David; Repol, David G.; Volcanological and geochemical evolution of the Diamante Caldera-Maipo volcano complex in the southern Andes of Argentina (34°10′S); Pergamon-Elsevier Science Ltd; Journal of South American Earth Sciences; 19; 4; 9-2005; 399-414
0895-9811
CONICET Digital
CONICET
url http://hdl.handle.net/11336/75928
identifier_str_mv Sruoga, Patricia; Llambias, Eduardo Jorge; Fauqué, Luis; Schonwandt, David; Repol, David G.; Volcanological and geochemical evolution of the Diamante Caldera-Maipo volcano complex in the southern Andes of Argentina (34°10′S); Pergamon-Elsevier Science Ltd; Journal of South American Earth Sciences; 19; 4; 9-2005; 399-414
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/doi/10.1016/j.jsames.2005.06.003
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0895981105000878
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
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 13.070432

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