Geochemistry of fluid discharges from Peteroa volcano (Argentina-Chile) in 2010–2015: Insights into compositional changes related to the fluid source region(s).
Saved in:
| Title: | Geochemistry of fluid discharges from Peteroa volcano (Argentina-Chile) in 2010–2015: Insights into compositional changes related to the fluid source region(s). |
|---|---|
| Authors: | Tassi, F.1,2 franco.tassi@unifi.it, Aguilera, F.3, Benavente, O.4,5, Paonita, A.6, Chiodini, G.7, Caliro, S.7, Agusto, M.8, Gutierrez, F.4,5,9, Capaccioni, B.10, Vaselli, O.1,2, Caselli, A.11, Saltori, O.4,5 |
| Source: | Chemical Geology. Aug2016, Vol. 432, p41-53. 13p. |
| Subjects: | Geochemistry, Fluid flow, Magmatism, Earthquakes, Hydrothermal deposits |
| Geographic Terms: | Lanín Volcano (Argentina & Chile) |
| Abstract: | 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 SO 2 , increased, suggesting an input of fluids from magma degassing. Nevertheless, the R/Ra and δ 13 C–CO 2 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. [ABSTRACT FROM AUTHOR] |
| Copyright of Chemical Geology is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
| FullText | Text: Availability: 0 |
|---|---|
| Header | DbId: egs DbLabel: Engineering Source An: 115067870 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
| IllustrationInfo | |
| Items | – Name: Title Label: Title Group: Ti Data: Geochemistry of fluid discharges from Peteroa volcano (Argentina-Chile) in 2010–2015: Insights into compositional changes related to the fluid source region(s). – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Tassi%2C+F%2E%22">Tassi, F.</searchLink><relatesTo>1,2</relatesTo><i> franco.tassi@unifi.it</i><br /><searchLink fieldCode="AR" term="%22Aguilera%2C+F%2E%22">Aguilera, F.</searchLink><relatesTo>3</relatesTo><br /><searchLink fieldCode="AR" term="%22Benavente%2C+O%2E%22">Benavente, O.</searchLink><relatesTo>4,5</relatesTo><br /><searchLink fieldCode="AR" term="%22Paonita%2C+A%2E%22">Paonita, A.</searchLink><relatesTo>6</relatesTo><br /><searchLink fieldCode="AR" term="%22Chiodini%2C+G%2E%22">Chiodini, G.</searchLink><relatesTo>7</relatesTo><br /><searchLink fieldCode="AR" term="%22Caliro%2C+S%2E%22">Caliro, S.</searchLink><relatesTo>7</relatesTo><br /><searchLink fieldCode="AR" term="%22Agusto%2C+M%2E%22">Agusto, M.</searchLink><relatesTo>8</relatesTo><br /><searchLink fieldCode="AR" term="%22Gutierrez%2C+F%2E%22">Gutierrez, F.</searchLink><relatesTo>4,5,9</relatesTo><br /><searchLink fieldCode="AR" term="%22Capaccioni%2C+B%2E%22">Capaccioni, B.</searchLink><relatesTo>10</relatesTo><br /><searchLink fieldCode="AR" term="%22Vaselli%2C+O%2E%22">Vaselli, O.</searchLink><relatesTo>1,2</relatesTo><br /><searchLink fieldCode="AR" term="%22Caselli%2C+A%2E%22">Caselli, A.</searchLink><relatesTo>11</relatesTo><br /><searchLink fieldCode="AR" term="%22Saltori%2C+O%2E%22">Saltori, O.</searchLink><relatesTo>4,5</relatesTo> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Chemical+Geology%22">Chemical Geology</searchLink>. Aug2016, Vol. 432, p41-53. 13p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Geochemistry%22">Geochemistry</searchLink><br /><searchLink fieldCode="DE" term="%22Fluid+flow%22">Fluid flow</searchLink><br /><searchLink fieldCode="DE" term="%22Magmatism%22">Magmatism</searchLink><br /><searchLink fieldCode="DE" term="%22Earthquakes%22">Earthquakes</searchLink><br /><searchLink fieldCode="DE" term="%22Hydrothermal+deposits%22">Hydrothermal deposits</searchLink> – Name: SubjectGeographic Label: Geographic Terms Group: Su Data: <searchLink fieldCode="DE" term="%22Lanín+Volcano+%28Argentina+%26+Chile%29%22">Lanín Volcano (Argentina & Chile)</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: 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 SO 2 , increased, suggesting an input of fluids from magma degassing. Nevertheless, the R/Ra and δ 13 C–CO 2 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. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Chemical Geology is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
| PLink | https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=egs&AN=115067870 |
| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1016/j.chemgeo.2016.04.007 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 13 StartPage: 41 Subjects: – SubjectFull: Geochemistry Type: general – SubjectFull: Fluid flow Type: general – SubjectFull: Magmatism Type: general – SubjectFull: Earthquakes Type: general – SubjectFull: Hydrothermal deposits Type: general – SubjectFull: Lanín Volcano (Argentina & Chile) Type: general Titles: – TitleFull: Geochemistry of fluid discharges from Peteroa volcano (Argentina-Chile) in 2010–2015: Insights into compositional changes related to the fluid source region(s). Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Tassi, F. – PersonEntity: Name: NameFull: Aguilera, F. – PersonEntity: Name: NameFull: Benavente, O. – PersonEntity: Name: NameFull: Paonita, A. – PersonEntity: Name: NameFull: Chiodini, G. – PersonEntity: Name: NameFull: Caliro, S. – PersonEntity: Name: NameFull: Agusto, M. – PersonEntity: Name: NameFull: Gutierrez, F. – PersonEntity: Name: NameFull: Capaccioni, B. – PersonEntity: Name: NameFull: Vaselli, O. – PersonEntity: Name: NameFull: Caselli, A. – PersonEntity: Name: NameFull: Saltori, O. IsPartOfRelationships: – BibEntity: Dates: – D: 15 M: 08 Text: Aug2016 Type: published Y: 2016 Identifiers: – Type: issn-print Value: 00092541 Numbering: – Type: volume Value: 432 Titles: – TitleFull: Chemical Geology Type: main |
| ResultId | 1 |
