Spatial-temporal distribution of volcanism in the 25-28°s segment of the andean central volcanic zone

Autores
Guzman, Silvina Raquel; Grosse, Pablo; Montero Lopez, Maria Carolina; Hongn, Fernando Daniel; Pilger, Rex; Petrinovic, Ivan Alejandro; Seggiaro, Raul Eudocio; Aramayo, Alejandro José
Año de publicación
2014
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The present contribution describes and analyses the spatial–temporal distribution and main features of the volcanic rocks, with emphasis in pyroclastic deposits, located in the 25–28°S segment of the Central Andes. We built a new database, based on our own field studies and compilation from the literature, where we discriminate the different pyroclastic units. We find that the pyroclastic deposits cover an area of at least 7770 km2 and are distributed mainly along N–S to NNE–SSW, NW–SE to WNW–ESE and NE–SW trends. The spatial distribution of these deposits has varied with time: those > 14.5 Ma are concentrated west of 69°W; during 14.5–11.5 Ma explosive magmatism shifted east of 67°W; the deposits < 11.5 Ma became more dispersed. The main explosive activity occurred during the 26–18 Ma, 14.5–11.5 Ma and ≤ 5.3 Ma intervals. For pyroclastic deposits, dacitic compositions dominate during the Miocene, whereas rhyodacitic and rhyolitic compositions are more abundant since the Pliocene. In the 25–28°S segment of the CVZ there is no clear migration pattern of the magmatism, except for the well-known eastward migration occurred at ca. 26 Ma.Moreover, we find that a) basement lithology or composition or mechanical features influenced distribution of volcanic activity; b) the NE–SW alignment of < 2.5 Ma caldera complexes coincides with the maximum depth of the Moho discontinuity and may be a further indicator of delamination processes in the Puna–Eastern Cordillera/Pampean Ranges border; and c) intense explosive volcanism concentrated during the 14–11.5 Ma interval along the eastern Puna border, which coincides in time with a peak in deformation and in space with the contact between basement units with different mechanical properties. No relationship between magmatic activity and azimuth or convergence rate between South American and Nazca plates are found, except for a peak in convergence rate at ~ 26 Ma.
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: Grosse, Pablo. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Fundación Miguel Lillo; Argentina
Fil: Montero Lopez, Maria Carolina. 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: Hongn, Fernando Daniel. 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: Pilger, Rex. Pilger G3; Estados Unidos
Fil: Petrinovic, Ivan Alejandro. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Centro de Investigaciones en Ciencias de la Tierra. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Centro de Investigaciones en Ciencias de la Tierra; Argentina
Fil: Seggiaro, Raul Eudocio. 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. Secretaría de Industria y Minería. Servicio Geológico Minero Argentino; Argentina
Fil: Aramayo, Alejandro José. 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
Ignimbrites
Explosive Volcanism
Calderas
Central Volcanic Zone
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:11336/32061
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/32061
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Spatial-temporal distribution of volcanism in the 25-28°s segment of the andean central volcanic zoneGuzman, Silvina RaquelGrosse, PabloMontero Lopez, Maria CarolinaHongn, Fernando DanielPilger, RexPetrinovic, Ivan AlejandroSeggiaro, Raul EudocioAramayo, Alejandro JoséIgnimbritesExplosive VolcanismCalderasCentral Volcanic Zonehttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1The present contribution describes and analyses the spatial–temporal distribution and main features of the volcanic rocks, with emphasis in pyroclastic deposits, located in the 25–28°S segment of the Central Andes. We built a new database, based on our own field studies and compilation from the literature, where we discriminate the different pyroclastic units. We find that the pyroclastic deposits cover an area of at least 7770 km2 and are distributed mainly along N–S to NNE–SSW, NW–SE to WNW–ESE and NE–SW trends. The spatial distribution of these deposits has varied with time: those > 14.5 Ma are concentrated west of 69°W; during 14.5–11.5 Ma explosive magmatism shifted east of 67°W; the deposits < 11.5 Ma became more dispersed. The main explosive activity occurred during the 26–18 Ma, 14.5–11.5 Ma and ≤ 5.3 Ma intervals. For pyroclastic deposits, dacitic compositions dominate during the Miocene, whereas rhyodacitic and rhyolitic compositions are more abundant since the Pliocene. In the 25–28°S segment of the CVZ there is no clear migration pattern of the magmatism, except for the well-known eastward migration occurred at ca. 26 Ma.Moreover, we find that a) basement lithology or composition or mechanical features influenced distribution of volcanic activity; b) the NE–SW alignment of < 2.5 Ma caldera complexes coincides with the maximum depth of the Moho discontinuity and may be a further indicator of delamination processes in the Puna–Eastern Cordillera/Pampean Ranges border; and c) intense explosive volcanism concentrated during the 14–11.5 Ma interval along the eastern Puna border, which coincides in time with a peak in deformation and in space with the contact between basement units with different mechanical properties. No relationship between magmatic activity and azimuth or convergence rate between South American and Nazca plates are found, except for a peak in convergence rate at ~ 26 Ma.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: Grosse, Pablo. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Fundación Miguel Lillo; ArgentinaFil: Montero Lopez, Maria Carolina. 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: Hongn, Fernando Daniel. 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: Pilger, Rex. Pilger G3; Estados UnidosFil: Petrinovic, Ivan Alejandro. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Centro de Investigaciones en Ciencias de la Tierra. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Centro de Investigaciones en Ciencias de la Tierra; ArgentinaFil: Seggiaro, Raul Eudocio. 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. Secretaría de Industria y Minería. Servicio Geológico Minero Argentino; ArgentinaFil: Aramayo, Alejandro José. 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; ArgentinaElsevier2014-12info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/32061Guzman, Silvina Raquel; Grosse, Pablo; Montero Lopez, Maria Carolina; Hongn, Fernando Daniel; Pilger, Rex; et al.; Spatial-temporal distribution of volcanism in the 25-28°s segment of the andean central volcanic zone; Elsevier; Tectonophysics; 636; 12-2014; 170-1890040-1951CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0040195114004715info:eu-repo/semantics/altIdentifier/doi/10.1016/j.tecto.2014.08.013info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T10:11:37Zoai:ri.conicet.gov.ar:11336/32061instacron: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 10:11:37.872CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Spatial-temporal distribution of volcanism in the 25-28°s segment of the andean central volcanic zone
title Spatial-temporal distribution of volcanism in the 25-28°s segment of the andean central volcanic zone
spellingShingle Spatial-temporal distribution of volcanism in the 25-28°s segment of the andean central volcanic zone
Guzman, Silvina Raquel
Ignimbrites
Explosive Volcanism
Calderas
Central Volcanic Zone
title_short Spatial-temporal distribution of volcanism in the 25-28°s segment of the andean central volcanic zone
title_full Spatial-temporal distribution of volcanism in the 25-28°s segment of the andean central volcanic zone
title_fullStr Spatial-temporal distribution of volcanism in the 25-28°s segment of the andean central volcanic zone
title_full_unstemmed Spatial-temporal distribution of volcanism in the 25-28°s segment of the andean central volcanic zone
title_sort Spatial-temporal distribution of volcanism in the 25-28°s segment of the andean central volcanic zone
dc.creator.none.fl_str_mv Guzman, Silvina Raquel
Grosse, Pablo
Montero Lopez, Maria Carolina
Hongn, Fernando Daniel
Pilger, Rex
Petrinovic, Ivan Alejandro
Seggiaro, Raul Eudocio
Aramayo, Alejandro José
author Guzman, Silvina Raquel
author_facet Guzman, Silvina Raquel
Grosse, Pablo
Montero Lopez, Maria Carolina
Hongn, Fernando Daniel
Pilger, Rex
Petrinovic, Ivan Alejandro
Seggiaro, Raul Eudocio
Aramayo, Alejandro José
author_role author
author2 Grosse, Pablo
Montero Lopez, Maria Carolina
Hongn, Fernando Daniel
Pilger, Rex
Petrinovic, Ivan Alejandro
Seggiaro, Raul Eudocio
Aramayo, Alejandro José
author2_role author
author
author
author
author
author
author
dc.subject.none.fl_str_mv Ignimbrites
Explosive Volcanism
Calderas
Central Volcanic Zone
topic Ignimbrites
Explosive Volcanism
Calderas
Central Volcanic Zone
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 present contribution describes and analyses the spatial–temporal distribution and main features of the volcanic rocks, with emphasis in pyroclastic deposits, located in the 25–28°S segment of the Central Andes. We built a new database, based on our own field studies and compilation from the literature, where we discriminate the different pyroclastic units. We find that the pyroclastic deposits cover an area of at least 7770 km2 and are distributed mainly along N–S to NNE–SSW, NW–SE to WNW–ESE and NE–SW trends. The spatial distribution of these deposits has varied with time: those > 14.5 Ma are concentrated west of 69°W; during 14.5–11.5 Ma explosive magmatism shifted east of 67°W; the deposits < 11.5 Ma became more dispersed. The main explosive activity occurred during the 26–18 Ma, 14.5–11.5 Ma and ≤ 5.3 Ma intervals. For pyroclastic deposits, dacitic compositions dominate during the Miocene, whereas rhyodacitic and rhyolitic compositions are more abundant since the Pliocene. In the 25–28°S segment of the CVZ there is no clear migration pattern of the magmatism, except for the well-known eastward migration occurred at ca. 26 Ma.Moreover, we find that a) basement lithology or composition or mechanical features influenced distribution of volcanic activity; b) the NE–SW alignment of < 2.5 Ma caldera complexes coincides with the maximum depth of the Moho discontinuity and may be a further indicator of delamination processes in the Puna–Eastern Cordillera/Pampean Ranges border; and c) intense explosive volcanism concentrated during the 14–11.5 Ma interval along the eastern Puna border, which coincides in time with a peak in deformation and in space with the contact between basement units with different mechanical properties. No relationship between magmatic activity and azimuth or convergence rate between South American and Nazca plates are found, except for a peak in convergence rate at ~ 26 Ma.
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: Grosse, Pablo. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Fundación Miguel Lillo; Argentina
Fil: Montero Lopez, Maria Carolina. 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: Hongn, Fernando Daniel. 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: Pilger, Rex. Pilger G3; Estados Unidos
Fil: Petrinovic, Ivan Alejandro. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Centro de Investigaciones en Ciencias de la Tierra. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Centro de Investigaciones en Ciencias de la Tierra; Argentina
Fil: Seggiaro, Raul Eudocio. 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. Secretaría de Industria y Minería. Servicio Geológico Minero Argentino; Argentina
Fil: Aramayo, Alejandro José. 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 The present contribution describes and analyses the spatial–temporal distribution and main features of the volcanic rocks, with emphasis in pyroclastic deposits, located in the 25–28°S segment of the Central Andes. We built a new database, based on our own field studies and compilation from the literature, where we discriminate the different pyroclastic units. We find that the pyroclastic deposits cover an area of at least 7770 km2 and are distributed mainly along N–S to NNE–SSW, NW–SE to WNW–ESE and NE–SW trends. The spatial distribution of these deposits has varied with time: those > 14.5 Ma are concentrated west of 69°W; during 14.5–11.5 Ma explosive magmatism shifted east of 67°W; the deposits < 11.5 Ma became more dispersed. The main explosive activity occurred during the 26–18 Ma, 14.5–11.5 Ma and ≤ 5.3 Ma intervals. For pyroclastic deposits, dacitic compositions dominate during the Miocene, whereas rhyodacitic and rhyolitic compositions are more abundant since the Pliocene. In the 25–28°S segment of the CVZ there is no clear migration pattern of the magmatism, except for the well-known eastward migration occurred at ca. 26 Ma.Moreover, we find that a) basement lithology or composition or mechanical features influenced distribution of volcanic activity; b) the NE–SW alignment of < 2.5 Ma caldera complexes coincides with the maximum depth of the Moho discontinuity and may be a further indicator of delamination processes in the Puna–Eastern Cordillera/Pampean Ranges border; and c) intense explosive volcanism concentrated during the 14–11.5 Ma interval along the eastern Puna border, which coincides in time with a peak in deformation and in space with the contact between basement units with different mechanical properties. No relationship between magmatic activity and azimuth or convergence rate between South American and Nazca plates are found, except for a peak in convergence rate at ~ 26 Ma.
publishDate 2014
dc.date.none.fl_str_mv 2014-12
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/11336/32061
Guzman, Silvina Raquel; Grosse, Pablo; Montero Lopez, Maria Carolina; Hongn, Fernando Daniel; Pilger, Rex; et al.; Spatial-temporal distribution of volcanism in the 25-28°s segment of the andean central volcanic zone; Elsevier; Tectonophysics; 636; 12-2014; 170-189
0040-1951
CONICET Digital
CONICET
url http://hdl.handle.net/11336/32061
identifier_str_mv Guzman, Silvina Raquel; Grosse, Pablo; Montero Lopez, Maria Carolina; Hongn, Fernando Daniel; Pilger, Rex; et al.; Spatial-temporal distribution of volcanism in the 25-28°s segment of the andean central volcanic zone; Elsevier; Tectonophysics; 636; 12-2014; 170-189
0040-1951
CONICET Digital
CONICET
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/S0040195114004715
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.tecto.2014.08.013
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
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
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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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