Characteristics and emplacement mechanisms of the Coranzulí ignimbrites (Central Andes)

Autores
Guzman, Silvina Raquel; Doronzo, Domenico M.; Martí, Joan; Seggiaro, Raúl
Año de publicación
2020
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We present a detailed stratigraphy of the Coranzulí caldera-forming deposits. This caldera, located in the Altiplano-Puna Volcanic Complex (Central Andes), generated four ignimbrite deposits with similar field characteristics and facies that differ from each other in, above all, the nature of the lithic fragments they contain. Three different lithofacies (fine-grained cross-stratified facies, massive lithic breccia facies and massive ignimbrite facies) are found in all the ignimbrite deposits, which occasionally also contain a lenticular lithic-rich facies and/or a pumice-rich facies. These field characteristics and, in particular, local deposit thicknesses were used to develop a theoretical model of the dynamics and emplacement mode of the Coranzulí pyroclastic flows. Our results show that these ignimbrites were emplaced by dense pyroclastic density currents subjected to high accumulation rates and velocities, thereby indicating rapid en masse emplacement that was also influenced by local paleotopography as deduced from facies analysis.
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: Doronzo, Domenico M.. Consejo Superior de Investigaciones Científicas. Instituto de Ciencias de la Tierra Jaume Almera; España
Fil: Martí, Joan. Consejo Superior de Investigaciones Científicas. Instituto de Ciencias de la Tierra Jaume Almera; España
Fil: Seggiaro, Raúl. 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
Materia
ALTIPLANO-PUNA VOLCANIC COMPLEX
CENTRAL ANDES
CORANZULÍ
CRYSTAL-RICH IGNIMBRITES
PUNA
PYROCLASTIC DENSITY CURRENT
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:11336/140101
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/140101
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Characteristics and emplacement mechanisms of the Coranzulí ignimbrites (Central Andes)Guzman, Silvina RaquelDoronzo, Domenico M.Martí, JoanSeggiaro, RaúlALTIPLANO-PUNA VOLCANIC COMPLEXCENTRAL ANDESCORANZULÍCRYSTAL-RICH IGNIMBRITESPUNAPYROCLASTIC DENSITY CURRENThttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1We present a detailed stratigraphy of the Coranzulí caldera-forming deposits. This caldera, located in the Altiplano-Puna Volcanic Complex (Central Andes), generated four ignimbrite deposits with similar field characteristics and facies that differ from each other in, above all, the nature of the lithic fragments they contain. Three different lithofacies (fine-grained cross-stratified facies, massive lithic breccia facies and massive ignimbrite facies) are found in all the ignimbrite deposits, which occasionally also contain a lenticular lithic-rich facies and/or a pumice-rich facies. These field characteristics and, in particular, local deposit thicknesses were used to develop a theoretical model of the dynamics and emplacement mode of the Coranzulí pyroclastic flows. Our results show that these ignimbrites were emplaced by dense pyroclastic density currents subjected to high accumulation rates and velocities, thereby indicating rapid en masse emplacement that was also influenced by local paleotopography as deduced from facies analysis.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; ArgentinaFil: Doronzo, Domenico M.. Consejo Superior de Investigaciones Científicas. Instituto de Ciencias de la Tierra Jaume Almera; EspañaFil: Martí, Joan. Consejo Superior de Investigaciones Científicas. Instituto de Ciencias de la Tierra Jaume Almera; EspañaFil: Seggiaro, Raúl. 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; ArgentinaElsevier Science2020-07-15info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/140101Guzman, Silvina Raquel; Doronzo, Domenico M.; Martí, Joan; Seggiaro, Raúl; Characteristics and emplacement mechanisms of the Coranzulí ignimbrites (Central Andes); Elsevier Science; Sedimentary Geology; 405; 105699; 15-7-2020; 1-520037-0738CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://linkinghub.elsevier.com/retrieve/pii/S0037073820301147info:eu-repo/semantics/altIdentifier/doi/10.1016/j.sedgeo.2020.105699info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T10:10:48Zoai:ri.conicet.gov.ar:11336/140101instacron: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 10:10:49.212CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Characteristics and emplacement mechanisms of the Coranzulí ignimbrites (Central Andes)
title Characteristics and emplacement mechanisms of the Coranzulí ignimbrites (Central Andes)
spellingShingle Characteristics and emplacement mechanisms of the Coranzulí ignimbrites (Central Andes)
Guzman, Silvina Raquel
ALTIPLANO-PUNA VOLCANIC COMPLEX
CENTRAL ANDES
CORANZULÍ
CRYSTAL-RICH IGNIMBRITES
PUNA
PYROCLASTIC DENSITY CURRENT
title_short Characteristics and emplacement mechanisms of the Coranzulí ignimbrites (Central Andes)
title_full Characteristics and emplacement mechanisms of the Coranzulí ignimbrites (Central Andes)
title_fullStr Characteristics and emplacement mechanisms of the Coranzulí ignimbrites (Central Andes)
title_full_unstemmed Characteristics and emplacement mechanisms of the Coranzulí ignimbrites (Central Andes)
title_sort Characteristics and emplacement mechanisms of the Coranzulí ignimbrites (Central Andes)
dc.creator.none.fl_str_mv Guzman, Silvina Raquel
Doronzo, Domenico M.
Martí, Joan
Seggiaro, Raúl
author Guzman, Silvina Raquel
author_facet Guzman, Silvina Raquel
Doronzo, Domenico M.
Martí, Joan
Seggiaro, Raúl
author_role author
author2 Doronzo, Domenico M.
Martí, Joan
Seggiaro, Raúl
author2_role author
author
author
dc.subject.none.fl_str_mv ALTIPLANO-PUNA VOLCANIC COMPLEX
CENTRAL ANDES
CORANZULÍ
CRYSTAL-RICH IGNIMBRITES
PUNA
PYROCLASTIC DENSITY CURRENT
topic ALTIPLANO-PUNA VOLCANIC COMPLEX
CENTRAL ANDES
CORANZULÍ
CRYSTAL-RICH IGNIMBRITES
PUNA
PYROCLASTIC DENSITY CURRENT
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv We present a detailed stratigraphy of the Coranzulí caldera-forming deposits. This caldera, located in the Altiplano-Puna Volcanic Complex (Central Andes), generated four ignimbrite deposits with similar field characteristics and facies that differ from each other in, above all, the nature of the lithic fragments they contain. Three different lithofacies (fine-grained cross-stratified facies, massive lithic breccia facies and massive ignimbrite facies) are found in all the ignimbrite deposits, which occasionally also contain a lenticular lithic-rich facies and/or a pumice-rich facies. These field characteristics and, in particular, local deposit thicknesses were used to develop a theoretical model of the dynamics and emplacement mode of the Coranzulí pyroclastic flows. Our results show that these ignimbrites were emplaced by dense pyroclastic density currents subjected to high accumulation rates and velocities, thereby indicating rapid en masse emplacement that was also influenced by local paleotopography as deduced from facies analysis.
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: Doronzo, Domenico M.. Consejo Superior de Investigaciones Científicas. Instituto de Ciencias de la Tierra Jaume Almera; España
Fil: Martí, Joan. Consejo Superior de Investigaciones Científicas. Instituto de Ciencias de la Tierra Jaume Almera; España
Fil: Seggiaro, Raúl. 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
description We present a detailed stratigraphy of the Coranzulí caldera-forming deposits. This caldera, located in the Altiplano-Puna Volcanic Complex (Central Andes), generated four ignimbrite deposits with similar field characteristics and facies that differ from each other in, above all, the nature of the lithic fragments they contain. Three different lithofacies (fine-grained cross-stratified facies, massive lithic breccia facies and massive ignimbrite facies) are found in all the ignimbrite deposits, which occasionally also contain a lenticular lithic-rich facies and/or a pumice-rich facies. These field characteristics and, in particular, local deposit thicknesses were used to develop a theoretical model of the dynamics and emplacement mode of the Coranzulí pyroclastic flows. Our results show that these ignimbrites were emplaced by dense pyroclastic density currents subjected to high accumulation rates and velocities, thereby indicating rapid en masse emplacement that was also influenced by local paleotopography as deduced from facies analysis.
publishDate 2020
dc.date.none.fl_str_mv 2020-07-15
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/11336/140101
Guzman, Silvina Raquel; Doronzo, Domenico M.; Martí, Joan; Seggiaro, Raúl; Characteristics and emplacement mechanisms of the Coranzulí ignimbrites (Central Andes); Elsevier Science; Sedimentary Geology; 405; 105699; 15-7-2020; 1-52
0037-0738
CONICET Digital
CONICET
url http://hdl.handle.net/11336/140101
identifier_str_mv Guzman, Silvina Raquel; Doronzo, Domenico M.; Martí, Joan; Seggiaro, Raúl; Characteristics and emplacement mechanisms of the Coranzulí ignimbrites (Central Andes); Elsevier Science; Sedimentary Geology; 405; 105699; 15-7-2020; 1-52
0037-0738
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/S0037073820301147
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.sedgeo.2020.105699
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 13.13397

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