Geochemistry of fluid discharges from Peteroa volcano (Argentina-Chile) in 2010-2015: Insights into compositional changes related to the fluid source region(s)

Autores: Tassi, Franco; Aguilera, F.; Benavente, O.; Paonita, A.; Chiodini, Giovanni; Caliro, S.; Agusto, Mariano Roberto; Gutierrez, F.; Capaccioni, B.; Vaselli, O.; Caselli, Alberto Tomás; Saltori, O.
Año de publicación: 2016
Idioma: inglés
Tipo de recurso: artículo
Estado: versión publicada
Descripción: This study presents the first geochemical data of fluid discharges collected from February 2010 to March 2015 from the Planchón–Peteroa–Azufre Volcanic Complex (PPAVC), located in the Transitional Southern Volcanic Zone (TSVZ) at the border between Argentina and Chile. During the study period, from January 2010 to July 2011, Peteroa volcano experienced phreatic to phreatomagmatic eruption possibly related to the devastating Maule earthquake occurred on February 27, 2010. The compositional dataset includes low temperature (from 43.2 to 102 °C) gas discharges from (i) the summit of Peteroa volcano and (ii) the SE flank of Azufre volcano, both marked by a significant magmatic fluid contribution, as well as bubbling gases located at the foothill of the Peteroa volcanic edifice, which showed a chemical signature typical of hydrothermal fluids. In 2012, strong compositional changes affected the Peteroa gases from the summit area: the acidic gas species, especially SO2, increased, suggesting an input of fluids from magma degassing. Nevertheless, the R/Ra and δ13C–CO2 values decreased, which would imply an enhanced contribution from a meteoric-hydrothermal source. In 2014–2015, the chemical and isotopic compositions of the 2010–2011 gases were partially restored. The anomalous decoupling between the chemical and the isotopic parameters was tentatively interpreted as produced by degassing activity from a small batch of dacitic magma that in 2012 masked the compositional signature of the magmatic fluids released from a basaltic magma that dominated the gas chemistry in 2010–2011. This explanation reliably justifies the observed geochemical data, although the mechanisms leading to the change in time of the dominating magmatic fluid source are not clear. At this regard, a geophysical survey able to provide information on the location of the two magma batches could be useful to clarify the possible relationships between the compositional changes that affected the Peteroa fluid discharges and the 2010–2011 eruptive activity.
Fil: Tassi, Franco. Universita Degli Studi Di Firenze; Italia
Fil: Aguilera, F.. Servicio Nacional de Geología y Minería; Chile
Fil: Benavente, O.. Universidad de Chile; Chile
Fil: Paonita, A.. Istituto Nazionale Di Geofisica E Vulcanologia; Italia
Fil: Chiodini, Giovanni. Istituto Nazionale Di Geofisica E Vulcanologia; Italia
Fil: Caliro, S.. Istituto Nazionale Di Geofisica E Vulcanologia; Italia
Fil: Agusto, Mariano Roberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Estudios Andinos "Don Pablo Groeber". Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Estudios Andinos "Don Pablo Groeber"; Argentina
Fil: Gutierrez, F.. Universidad de Chile; Chile. Advanced Mining Technology Center; Chile
Fil: Capaccioni, B.. Department of Earth and Geological -Environmental Science; Italia
Fil: Vaselli, O.. Universita Degli Studi Di Firenze; Italia
Fil: Caselli, Alberto Tomás. Universidad Nacional de Rio Negro; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Saltori, O.. Universidad de Chile; Chile
Materia: Gas
Geochemistry
Peteroa
Volcano
Nivel de accesibilidad: acceso abierto
Condiciones de uso: https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
Repositorio
Institución: Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador: oai:ri.conicet.gov.ar:11336/21490

Acceder

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repository_id_str	3498
network_name_str	CONICET Digital (CONICET)
spelling	Geochemistry of fluid discharges from Peteroa volcano (Argentina-Chile) in 2010-2015: Insights into compositional changes related to the fluid source region(s)Tassi, FrancoAguilera, F.Benavente, O.Paonita, A.Chiodini, GiovanniCaliro, S.Agusto, Mariano RobertoGutierrez, F.Capaccioni, B.Vaselli, O.Caselli, Alberto TomásSaltori, O.GasGeochemistryPeteroaVolcanohttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1This study presents the first geochemical data of fluid discharges collected from February 2010 to March 2015 from the Planchón–Peteroa–Azufre Volcanic Complex (PPAVC), located in the Transitional Southern Volcanic Zone (TSVZ) at the border between Argentina and Chile. During the study period, from January 2010 to July 2011, Peteroa volcano experienced phreatic to phreatomagmatic eruption possibly related to the devastating Maule earthquake occurred on February 27, 2010. The compositional dataset includes low temperature (from 43.2 to 102 °C) gas discharges from (i) the summit of Peteroa volcano and (ii) the SE flank of Azufre volcano, both marked by a significant magmatic fluid contribution, as well as bubbling gases located at the foothill of the Peteroa volcanic edifice, which showed a chemical signature typical of hydrothermal fluids. In 2012, strong compositional changes affected the Peteroa gases from the summit area: the acidic gas species, especially SO2, increased, suggesting an input of fluids from magma degassing. Nevertheless, the R/Ra and δ13C–CO2 values decreased, which would imply an enhanced contribution from a meteoric-hydrothermal source. In 2014–2015, the chemical and isotopic compositions of the 2010–2011 gases were partially restored. The anomalous decoupling between the chemical and the isotopic parameters was tentatively interpreted as produced by degassing activity from a small batch of dacitic magma that in 2012 masked the compositional signature of the magmatic fluids released from a basaltic magma that dominated the gas chemistry in 2010–2011. This explanation reliably justifies the observed geochemical data, although the mechanisms leading to the change in time of the dominating magmatic fluid source are not clear. At this regard, a geophysical survey able to provide information on the location of the two magma batches could be useful to clarify the possible relationships between the compositional changes that affected the Peteroa fluid discharges and the 2010–2011 eruptive activity.Fil: Tassi, Franco. Universita Degli Studi Di Firenze; ItaliaFil: Aguilera, F.. Servicio Nacional de Geología y Minería; ChileFil: Benavente, O.. Universidad de Chile; ChileFil: Paonita, A.. Istituto Nazionale Di Geofisica E Vulcanologia; ItaliaFil: Chiodini, Giovanni. Istituto Nazionale Di Geofisica E Vulcanologia; ItaliaFil: Caliro, S.. Istituto Nazionale Di Geofisica E Vulcanologia; ItaliaFil: Agusto, Mariano Roberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Estudios Andinos "Don Pablo Groeber". Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Estudios Andinos "Don Pablo Groeber"; ArgentinaFil: Gutierrez, F.. Universidad de Chile; Chile. Advanced Mining Technology Center; ChileFil: Capaccioni, B.. Department of Earth and Geological -Environmental Science; ItaliaFil: Vaselli, O.. Universita Degli Studi Di Firenze; ItaliaFil: Caselli, Alberto Tomás. Universidad Nacional de Rio Negro; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Saltori, O.. Universidad de Chile; ChileElsevier Science2016-04info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/21490Tassi, Franco; Aguilera, F.; Benavente, O.; Paonita, A.; Chiodini, Giovanni; et al.; Geochemistry of fluid discharges from Peteroa volcano (Argentina-Chile) in 2010-2015: Insights into compositional changes related to the fluid source region(s); Elsevier Science; Chemical Geology; 432; 4-2016; 41-530009-2541CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.chemgeo.2016.04.007info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0009254116301826info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-nd/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-15T14:38:58Zoai:ri.conicet.gov.ar:11336/21490instacron: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:34982025-10-15 14:38:58.461CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv	Geochemistry of fluid discharges from Peteroa volcano (Argentina-Chile) in 2010-2015: Insights into compositional changes related to the fluid source region(s)
title	Geochemistry of fluid discharges from Peteroa volcano (Argentina-Chile) in 2010-2015: Insights into compositional changes related to the fluid source region(s)
spellingShingle	Geochemistry of fluid discharges from Peteroa volcano (Argentina-Chile) in 2010-2015: Insights into compositional changes related to the fluid source region(s) Tassi, Franco Gas Geochemistry Peteroa Volcano
title_short	Geochemistry of fluid discharges from Peteroa volcano (Argentina-Chile) in 2010-2015: Insights into compositional changes related to the fluid source region(s)
title_full	Geochemistry of fluid discharges from Peteroa volcano (Argentina-Chile) in 2010-2015: Insights into compositional changes related to the fluid source region(s)
title_fullStr	Geochemistry of fluid discharges from Peteroa volcano (Argentina-Chile) in 2010-2015: Insights into compositional changes related to the fluid source region(s)
title_full_unstemmed	Geochemistry of fluid discharges from Peteroa volcano (Argentina-Chile) in 2010-2015: Insights into compositional changes related to the fluid source region(s)
title_sort	Geochemistry of fluid discharges from Peteroa volcano (Argentina-Chile) in 2010-2015: Insights into compositional changes related to the fluid source region(s)
dc.creator.none.fl_str_mv	Tassi, Franco Aguilera, F. Benavente, O. Paonita, A. Chiodini, Giovanni Caliro, S. Agusto, Mariano Roberto Gutierrez, F. Capaccioni, B. Vaselli, O. Caselli, Alberto Tomás Saltori, O.
author	Tassi, Franco
author_facet	Tassi, Franco Aguilera, F. Benavente, O. Paonita, A. Chiodini, Giovanni Caliro, S. Agusto, Mariano Roberto Gutierrez, F. Capaccioni, B. Vaselli, O. Caselli, Alberto Tomás Saltori, O.
author_role	author
author2	Aguilera, F. Benavente, O. Paonita, A. Chiodini, Giovanni Caliro, S. Agusto, Mariano Roberto Gutierrez, F. Capaccioni, B. Vaselli, O. Caselli, Alberto Tomás Saltori, O.
author2_role	author author author author author author author author author author author
dc.subject.none.fl_str_mv	Gas Geochemistry Peteroa Volcano
topic	Gas Geochemistry Peteroa Volcano
purl_subject.fl_str_mv	https://purl.org/becyt/ford/1.5 https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv	This study presents the first geochemical data of fluid discharges collected from February 2010 to March 2015 from the Planchón–Peteroa–Azufre Volcanic Complex (PPAVC), located in the Transitional Southern Volcanic Zone (TSVZ) at the border between Argentina and Chile. During the study period, from January 2010 to July 2011, Peteroa volcano experienced phreatic to phreatomagmatic eruption possibly related to the devastating Maule earthquake occurred on February 27, 2010. The compositional dataset includes low temperature (from 43.2 to 102 °C) gas discharges from (i) the summit of Peteroa volcano and (ii) the SE flank of Azufre volcano, both marked by a significant magmatic fluid contribution, as well as bubbling gases located at the foothill of the Peteroa volcanic edifice, which showed a chemical signature typical of hydrothermal fluids. In 2012, strong compositional changes affected the Peteroa gases from the summit area: the acidic gas species, especially SO2, increased, suggesting an input of fluids from magma degassing. Nevertheless, the R/Ra and δ13C–CO2 values decreased, which would imply an enhanced contribution from a meteoric-hydrothermal source. In 2014–2015, the chemical and isotopic compositions of the 2010–2011 gases were partially restored. The anomalous decoupling between the chemical and the isotopic parameters was tentatively interpreted as produced by degassing activity from a small batch of dacitic magma that in 2012 masked the compositional signature of the magmatic fluids released from a basaltic magma that dominated the gas chemistry in 2010–2011. This explanation reliably justifies the observed geochemical data, although the mechanisms leading to the change in time of the dominating magmatic fluid source are not clear. At this regard, a geophysical survey able to provide information on the location of the two magma batches could be useful to clarify the possible relationships between the compositional changes that affected the Peteroa fluid discharges and the 2010–2011 eruptive activity. Fil: Tassi, Franco. Universita Degli Studi Di Firenze; Italia Fil: Aguilera, F.. Servicio Nacional de Geología y Minería; Chile Fil: Benavente, O.. Universidad de Chile; Chile Fil: Paonita, A.. Istituto Nazionale Di Geofisica E Vulcanologia; Italia Fil: Chiodini, Giovanni. Istituto Nazionale Di Geofisica E Vulcanologia; Italia Fil: Caliro, S.. Istituto Nazionale Di Geofisica E Vulcanologia; Italia Fil: Agusto, Mariano Roberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Estudios Andinos "Don Pablo Groeber". Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Estudios Andinos "Don Pablo Groeber"; Argentina Fil: Gutierrez, F.. Universidad de Chile; Chile. Advanced Mining Technology Center; Chile Fil: Capaccioni, B.. Department of Earth and Geological -Environmental Science; Italia Fil: Vaselli, O.. Universita Degli Studi Di Firenze; Italia Fil: Caselli, Alberto Tomás. Universidad Nacional de Rio Negro; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina Fil: Saltori, O.. Universidad de Chile; Chile
description	This study presents the first geochemical data of fluid discharges collected from February 2010 to March 2015 from the Planchón–Peteroa–Azufre Volcanic Complex (PPAVC), located in the Transitional Southern Volcanic Zone (TSVZ) at the border between Argentina and Chile. During the study period, from January 2010 to July 2011, Peteroa volcano experienced phreatic to phreatomagmatic eruption possibly related to the devastating Maule earthquake occurred on February 27, 2010. The compositional dataset includes low temperature (from 43.2 to 102 °C) gas discharges from (i) the summit of Peteroa volcano and (ii) the SE flank of Azufre volcano, both marked by a significant magmatic fluid contribution, as well as bubbling gases located at the foothill of the Peteroa volcanic edifice, which showed a chemical signature typical of hydrothermal fluids. In 2012, strong compositional changes affected the Peteroa gases from the summit area: the acidic gas species, especially SO2, increased, suggesting an input of fluids from magma degassing. Nevertheless, the R/Ra and δ13C–CO2 values decreased, which would imply an enhanced contribution from a meteoric-hydrothermal source. In 2014–2015, the chemical and isotopic compositions of the 2010–2011 gases were partially restored. The anomalous decoupling between the chemical and the isotopic parameters was tentatively interpreted as produced by degassing activity from a small batch of dacitic magma that in 2012 masked the compositional signature of the magmatic fluids released from a basaltic magma that dominated the gas chemistry in 2010–2011. This explanation reliably justifies the observed geochemical data, although the mechanisms leading to the change in time of the dominating magmatic fluid source are not clear. At this regard, a geophysical survey able to provide information on the location of the two magma batches could be useful to clarify the possible relationships between the compositional changes that affected the Peteroa fluid discharges and the 2010–2011 eruptive activity.
publishDate	2016
dc.date.none.fl_str_mv	2016-04
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/11336/21490 Tassi, Franco; Aguilera, F.; Benavente, O.; Paonita, A.; Chiodini, Giovanni; et al.; Geochemistry of fluid discharges from Peteroa volcano (Argentina-Chile) in 2010-2015: Insights into compositional changes related to the fluid source region(s); Elsevier Science; Chemical Geology; 432; 4-2016; 41-53 0009-2541 CONICET Digital CONICET
url	http://hdl.handle.net/11336/21490
identifier_str_mv	Tassi, Franco; Aguilera, F.; Benavente, O.; Paonita, A.; Chiodini, Giovanni; et al.; Geochemistry of fluid discharges from Peteroa volcano (Argentina-Chile) in 2010-2015: Insights into compositional changes related to the fluid source region(s); Elsevier Science; Chemical Geology; 432; 4-2016; 41-53 0009-2541 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.chemgeo.2016.04.007 info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0009254116301826
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
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)
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repository.mail.fl_str_mv	dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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Geochemistry of fluid discharges from Peteroa volcano (Argentina-Chile) in 2010-2015: Insights into compositional changes related to the fluid source region(s)

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