Dynamics of caldera collapse during the Coranzulí eruption (6.6 Ma) (Central Andes, Argentina)

Autores
Seggiaro, Raul Eudocio; Guzman, Silvina Raquel; Martí, Joan
Año de publicación
2019
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The Coranzulí caldera (23°00′ S ? 66°15′ W) is one of the least known caldera complexes in the eastern part of the Argentinian Altiplano-Puna plateau (Central Andes). It lies at the intersection of N S, NW-SE and NE-SW fault systems and was formed about 6.6Ma ago; during the eruption, four main crystal-rich daciticignimbrites were emplaced in different directions around the caldera. Caldera collapse was not homogeneous, rather it occurred along different sectors of the ring fault as subsidence progressed. The location of co-ignimbrite lag breccias and the composition of the dominant lithic fragments within the different ignimbrite flow units reveal how the caldera collapse developed. According to the succession of deposits, in particular the lack of an initial fallout and the presence of co-ignimbrite lag breccias associated with the different ignimbriteunits, we interpret this caldera-forming eruption as a pulsating boiling-over event in which the caldera collapse developed immediately after the onset of the eruption, favored by a transtensive tectonic system. Within the central part of the caldera, there is Cerro Coranzulí, a resurgent dome that exposes a thick intracaldera ignimbrite succession covered by ~ 100-m-thick dacite lava flows that erupted at the end of caldera formation.
Fil: Seggiaro, Raul Eudocio. Secretaría de Industria y Minería. Servicio Geológico Minero Argentino; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Salta. Instituto de Bio y Geociencias del NOA. Universidad Nacional de Salta. Facultad de Ciencias Naturales. Museo de Ciencias Naturales. Instituto de Bio y Geociencias del NOA; Argentina
Fil: Guzman, Silvina Raquel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Salta. Instituto de Bio y Geociencias del NOA. Universidad Nacional de Salta. Facultad de Ciencias Naturales. Museo de Ciencias Naturales. Instituto de Bio y Geociencias del NOA; Argentina
Fil: Martí, Joan. Consejo Superior de Investigaciones Científicas. Instituto de Ciencias de la Tierra Jaume Almera; España
Materia
ALTIPLANO-PUNA VOLCANIC COMPLEX
CALDERA
CENTRAL ANDES
CORANZULÍ
CRYSTAL-RICH IGNIMBRITE
PUNA
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:11336/120683
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/120683
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Dynamics of caldera collapse during the Coranzulí eruption (6.6 Ma) (Central Andes, Argentina)Seggiaro, Raul EudocioGuzman, Silvina RaquelMartí, JoanALTIPLANO-PUNA VOLCANIC COMPLEXCALDERACENTRAL ANDESCORANZULÍCRYSTAL-RICH IGNIMBRITEPUNAhttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1The Coranzulí caldera (23°00′ S ? 66°15′ W) is one of the least known caldera complexes in the eastern part of the Argentinian Altiplano-Puna plateau (Central Andes). It lies at the intersection of N S, NW-SE and NE-SW fault systems and was formed about 6.6Ma ago; during the eruption, four main crystal-rich daciticignimbrites were emplaced in different directions around the caldera. Caldera collapse was not homogeneous, rather it occurred along different sectors of the ring fault as subsidence progressed. The location of co-ignimbrite lag breccias and the composition of the dominant lithic fragments within the different ignimbrite flow units reveal how the caldera collapse developed. According to the succession of deposits, in particular the lack of an initial fallout and the presence of co-ignimbrite lag breccias associated with the different ignimbriteunits, we interpret this caldera-forming eruption as a pulsating boiling-over event in which the caldera collapse developed immediately after the onset of the eruption, favored by a transtensive tectonic system. Within the central part of the caldera, there is Cerro Coranzulí, a resurgent dome that exposes a thick intracaldera ignimbrite succession covered by ~ 100-m-thick dacite lava flows that erupted at the end of caldera formation.Fil: Seggiaro, Raul Eudocio. Secretaría de Industria y Minería. Servicio Geológico Minero Argentino; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Salta. Instituto de Bio y Geociencias del NOA. Universidad Nacional de Salta. Facultad de Ciencias Naturales. Museo de Ciencias Naturales. Instituto de Bio y Geociencias del NOA; ArgentinaFil: Guzman, Silvina Raquel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Salta. Instituto de Bio y Geociencias del NOA. Universidad Nacional de Salta. Facultad de Ciencias Naturales. Museo de Ciencias Naturales. Instituto de Bio y Geociencias del NOA; ArgentinaFil: Martí, Joan. Consejo Superior de Investigaciones Científicas. Instituto de Ciencias de la Tierra Jaume Almera; EspañaElsevier Science2019-04info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/120683Seggiaro, Raul Eudocio; Guzman, Silvina Raquel; Martí, Joan; Dynamics of caldera collapse during the Coranzulí eruption (6.6 Ma) (Central Andes, Argentina); Elsevier Science; Journal of Volcanology and Geothermal Research; 374; 4-2019; 1-120377-0273CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://linkinghub.elsevier.com/retrieve/pii/S0377027318302543info:eu-repo/semantics/altIdentifier/doi/10.1016/j.jvolgeores.2019.02.003info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:46:05Zoai:ri.conicet.gov.ar:11336/120683instacron: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 09:46:06.035CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Dynamics of caldera collapse during the Coranzulí eruption (6.6 Ma) (Central Andes, Argentina)
title Dynamics of caldera collapse during the Coranzulí eruption (6.6 Ma) (Central Andes, Argentina)
spellingShingle Dynamics of caldera collapse during the Coranzulí eruption (6.6 Ma) (Central Andes, Argentina)
Seggiaro, Raul Eudocio
ALTIPLANO-PUNA VOLCANIC COMPLEX
CALDERA
CENTRAL ANDES
CORANZULÍ
CRYSTAL-RICH IGNIMBRITE
PUNA
title_short Dynamics of caldera collapse during the Coranzulí eruption (6.6 Ma) (Central Andes, Argentina)
title_full Dynamics of caldera collapse during the Coranzulí eruption (6.6 Ma) (Central Andes, Argentina)
title_fullStr Dynamics of caldera collapse during the Coranzulí eruption (6.6 Ma) (Central Andes, Argentina)
title_full_unstemmed Dynamics of caldera collapse during the Coranzulí eruption (6.6 Ma) (Central Andes, Argentina)
title_sort Dynamics of caldera collapse during the Coranzulí eruption (6.6 Ma) (Central Andes, Argentina)
dc.creator.none.fl_str_mv Seggiaro, Raul Eudocio
Guzman, Silvina Raquel
Martí, Joan
author Seggiaro, Raul Eudocio
author_facet Seggiaro, Raul Eudocio
Guzman, Silvina Raquel
Martí, Joan
author_role author
author2 Guzman, Silvina Raquel
Martí, Joan
author2_role author
author
dc.subject.none.fl_str_mv ALTIPLANO-PUNA VOLCANIC COMPLEX
CALDERA
CENTRAL ANDES
CORANZULÍ
CRYSTAL-RICH IGNIMBRITE
PUNA
topic ALTIPLANO-PUNA VOLCANIC COMPLEX
CALDERA
CENTRAL ANDES
CORANZULÍ
CRYSTAL-RICH IGNIMBRITE
PUNA
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 Coranzulí caldera (23°00′ S ? 66°15′ W) is one of the least known caldera complexes in the eastern part of the Argentinian Altiplano-Puna plateau (Central Andes). It lies at the intersection of N S, NW-SE and NE-SW fault systems and was formed about 6.6Ma ago; during the eruption, four main crystal-rich daciticignimbrites were emplaced in different directions around the caldera. Caldera collapse was not homogeneous, rather it occurred along different sectors of the ring fault as subsidence progressed. The location of co-ignimbrite lag breccias and the composition of the dominant lithic fragments within the different ignimbrite flow units reveal how the caldera collapse developed. According to the succession of deposits, in particular the lack of an initial fallout and the presence of co-ignimbrite lag breccias associated with the different ignimbriteunits, we interpret this caldera-forming eruption as a pulsating boiling-over event in which the caldera collapse developed immediately after the onset of the eruption, favored by a transtensive tectonic system. Within the central part of the caldera, there is Cerro Coranzulí, a resurgent dome that exposes a thick intracaldera ignimbrite succession covered by ~ 100-m-thick dacite lava flows that erupted at the end of caldera formation.
Fil: Seggiaro, Raul Eudocio. Secretaría de Industria y Minería. Servicio Geológico Minero Argentino; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Salta. Instituto de Bio y Geociencias del NOA. Universidad Nacional de Salta. Facultad de Ciencias Naturales. Museo de Ciencias Naturales. Instituto de Bio y Geociencias del NOA; Argentina
Fil: Guzman, Silvina Raquel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Salta. Instituto de Bio y Geociencias del NOA. Universidad Nacional de Salta. Facultad de Ciencias Naturales. Museo de Ciencias Naturales. Instituto de Bio y Geociencias del NOA; Argentina
Fil: Martí, Joan. Consejo Superior de Investigaciones Científicas. Instituto de Ciencias de la Tierra Jaume Almera; España
description The Coranzulí caldera (23°00′ S ? 66°15′ W) is one of the least known caldera complexes in the eastern part of the Argentinian Altiplano-Puna plateau (Central Andes). It lies at the intersection of N S, NW-SE and NE-SW fault systems and was formed about 6.6Ma ago; during the eruption, four main crystal-rich daciticignimbrites were emplaced in different directions around the caldera. Caldera collapse was not homogeneous, rather it occurred along different sectors of the ring fault as subsidence progressed. The location of co-ignimbrite lag breccias and the composition of the dominant lithic fragments within the different ignimbrite flow units reveal how the caldera collapse developed. According to the succession of deposits, in particular the lack of an initial fallout and the presence of co-ignimbrite lag breccias associated with the different ignimbriteunits, we interpret this caldera-forming eruption as a pulsating boiling-over event in which the caldera collapse developed immediately after the onset of the eruption, favored by a transtensive tectonic system. Within the central part of the caldera, there is Cerro Coranzulí, a resurgent dome that exposes a thick intracaldera ignimbrite succession covered by ~ 100-m-thick dacite lava flows that erupted at the end of caldera formation.
publishDate 2019
dc.date.none.fl_str_mv 2019-04
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/11336/120683
Seggiaro, Raul Eudocio; Guzman, Silvina Raquel; Martí, Joan; Dynamics of caldera collapse during the Coranzulí eruption (6.6 Ma) (Central Andes, Argentina); Elsevier Science; Journal of Volcanology and Geothermal Research; 374; 4-2019; 1-12
0377-0273
CONICET Digital
CONICET
url http://hdl.handle.net/11336/120683
identifier_str_mv Seggiaro, Raul Eudocio; Guzman, Silvina Raquel; Martí, Joan; Dynamics of caldera collapse during the Coranzulí eruption (6.6 Ma) (Central Andes, Argentina); Elsevier Science; Journal of Volcanology and Geothermal Research; 374; 4-2019; 1-12
0377-0273
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://linkinghub.elsevier.com/retrieve/pii/S0377027318302543
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.jvolgeores.2019.02.003
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 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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score 13.069144

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