δD and δ18O variations of the magmatic system beneath Deception Island volcano (Antarctica): Implications for magma ascent and eruption forecasting
Geochemistry of volatiles in active volcanoes provides insights into the magmatic processes and evolution at depth, such as magma evolution and degassing, which can be implemented into volcanic hazards assessment. Deception Island is one of the most active volcanoes in Antarctica, with more than twe...
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ftcsic:oai:digital.csic.es:10261/208392 2024-02-11T09:57:50+01:00 δD and δ18O variations of the magmatic system beneath Deception Island volcano (Antarctica): Implications for magma ascent and eruption forecasting Álvarez-Valero, A. M. Gisbert, G. Aulinas, M. Geyer, Adelina Kereszturi, G. Polo-Sánchez, A. Núñez-Guerrero, E. Sumino, H. Borrajo, J. Ministerio de Economía y Competitividad (España) Geyer, Adelina 2020-04 http://hdl.handle.net/10261/208392 https://doi.org/10.1016/j.chemgeo.2020.119595 https://doi.org/10.13039/501100003329 en eng Elsevier #PLACEHOLDER_PARENT_METADATA_VALUE# info:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/CTM2016-79617-P info:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/PGC2018-095693-B-I00 Postprint https://doi.org/10.1016/j.chemgeo.2020.119595 Sí Chemical Geology, 542: 119595 (2020) 0009-2541 http://hdl.handle.net/10261/208392 doi:10.1016/j.chemgeo.2020.119595 http://dx.doi.org/10.13039/501100003329 open Pre-eruptive magmatic conditions Volcanic hazard Antarctica Deception Island Magma degassing Active volcano Stable isotopes artículo http://purl.org/coar/resource_type/c_6501 2020 ftcsic https://doi.org/10.1016/j.chemgeo.2020.11959510.13039/501100003329 2024-01-16T10:52:22Z Geochemistry of volatiles in active volcanoes provides insights into the magmatic processes and evolution at depth, such as magma evolution and degassing, which can be implemented into volcanic hazards assessment. Deception Island is one of the most active volcanoes in Antarctica, with more than twenty explosive eruptions documented over the past two centuries. Hydrogen and oxygen isotopic variations in the volatiles trapped in the Deception Island rocks (glass and melt inclusions in phenocrysts) provide essential information on the mechanisms controlling the eruptive history in this volcanic suite. Thus, understanding the petrological and related isotopic variations in the island, has the potential to foresee the possible occurrence and its main eruptive features of a future eruption. The new isotopic results of this study combined with exhaustive petrologic knowledge reveal in Deception Island (i) fast ascent and quenching of most magmas, preserving pre-eruptive magmatic signal of water contents and isotopic ratios, with local modification by rehydration due to glass exposition to seawater, and by meteoric and fumarolic waters; (ii) a plumbing system(s) variable with time and currently dominated by closed-system degassing leading to explosive eruptions; (iii) control on the interactions of ascending magmas with the surface waters producing hydrovolcanic activity throughout the two main fault systems in Deception Island and at different magma stagnation depths. These results can be considered in further studies of volcanic monitoring to improve the capability to interpret geophysical data and signals recorded during volcanic unrest episodes, and hence, forecast volcanic eruptions and related hazards. This research was supported by the Spanish Government (MINECO projects) RECALDEC (CTM2009-05919-E/ANT), PEVOLDEC (CTM2011-13578-E/ANT), POSVOLDEC (CTM2016-79617-P)(AEI/FEDER, UE), VOLGASDEC (PGC2018-095693-B-I00)(AEI/FEDER, UE), and USAL-2019 project (Programa Propio - mod. 1B). A.G. is grateful for her Ramón y ... Article in Journal/Newspaper Antarc* Antarctica Deception Island Digital.CSIC (Spanish National Research Council) Deception Island ENVELOPE(-60.633,-60.633,-62.950,-62.950) |
institution |
Open Polar |
collection |
Digital.CSIC (Spanish National Research Council) |
op_collection_id |
ftcsic |
language |
English |
topic |
Pre-eruptive magmatic conditions Volcanic hazard Antarctica Deception Island Magma degassing Active volcano Stable isotopes |
spellingShingle |
Pre-eruptive magmatic conditions Volcanic hazard Antarctica Deception Island Magma degassing Active volcano Stable isotopes Álvarez-Valero, A. M. Gisbert, G. Aulinas, M. Geyer, Adelina Kereszturi, G. Polo-Sánchez, A. Núñez-Guerrero, E. Sumino, H. Borrajo, J. δD and δ18O variations of the magmatic system beneath Deception Island volcano (Antarctica): Implications for magma ascent and eruption forecasting |
topic_facet |
Pre-eruptive magmatic conditions Volcanic hazard Antarctica Deception Island Magma degassing Active volcano Stable isotopes |
description |
Geochemistry of volatiles in active volcanoes provides insights into the magmatic processes and evolution at depth, such as magma evolution and degassing, which can be implemented into volcanic hazards assessment. Deception Island is one of the most active volcanoes in Antarctica, with more than twenty explosive eruptions documented over the past two centuries. Hydrogen and oxygen isotopic variations in the volatiles trapped in the Deception Island rocks (glass and melt inclusions in phenocrysts) provide essential information on the mechanisms controlling the eruptive history in this volcanic suite. Thus, understanding the petrological and related isotopic variations in the island, has the potential to foresee the possible occurrence and its main eruptive features of a future eruption. The new isotopic results of this study combined with exhaustive petrologic knowledge reveal in Deception Island (i) fast ascent and quenching of most magmas, preserving pre-eruptive magmatic signal of water contents and isotopic ratios, with local modification by rehydration due to glass exposition to seawater, and by meteoric and fumarolic waters; (ii) a plumbing system(s) variable with time and currently dominated by closed-system degassing leading to explosive eruptions; (iii) control on the interactions of ascending magmas with the surface waters producing hydrovolcanic activity throughout the two main fault systems in Deception Island and at different magma stagnation depths. These results can be considered in further studies of volcanic monitoring to improve the capability to interpret geophysical data and signals recorded during volcanic unrest episodes, and hence, forecast volcanic eruptions and related hazards. This research was supported by the Spanish Government (MINECO projects) RECALDEC (CTM2009-05919-E/ANT), PEVOLDEC (CTM2011-13578-E/ANT), POSVOLDEC (CTM2016-79617-P)(AEI/FEDER, UE), VOLGASDEC (PGC2018-095693-B-I00)(AEI/FEDER, UE), and USAL-2019 project (Programa Propio - mod. 1B). A.G. is grateful for her Ramón y ... |
author2 |
Ministerio de Economía y Competitividad (España) Geyer, Adelina |
format |
Article in Journal/Newspaper |
author |
Álvarez-Valero, A. M. Gisbert, G. Aulinas, M. Geyer, Adelina Kereszturi, G. Polo-Sánchez, A. Núñez-Guerrero, E. Sumino, H. Borrajo, J. |
author_facet |
Álvarez-Valero, A. M. Gisbert, G. Aulinas, M. Geyer, Adelina Kereszturi, G. Polo-Sánchez, A. Núñez-Guerrero, E. Sumino, H. Borrajo, J. |
author_sort |
Álvarez-Valero, A. M. |
title |
δD and δ18O variations of the magmatic system beneath Deception Island volcano (Antarctica): Implications for magma ascent and eruption forecasting |
title_short |
δD and δ18O variations of the magmatic system beneath Deception Island volcano (Antarctica): Implications for magma ascent and eruption forecasting |
title_full |
δD and δ18O variations of the magmatic system beneath Deception Island volcano (Antarctica): Implications for magma ascent and eruption forecasting |
title_fullStr |
δD and δ18O variations of the magmatic system beneath Deception Island volcano (Antarctica): Implications for magma ascent and eruption forecasting |
title_full_unstemmed |
δD and δ18O variations of the magmatic system beneath Deception Island volcano (Antarctica): Implications for magma ascent and eruption forecasting |
title_sort |
δd and δ18o variations of the magmatic system beneath deception island volcano (antarctica): implications for magma ascent and eruption forecasting |
publisher |
Elsevier |
publishDate |
2020 |
url |
http://hdl.handle.net/10261/208392 https://doi.org/10.1016/j.chemgeo.2020.119595 https://doi.org/10.13039/501100003329 |
long_lat |
ENVELOPE(-60.633,-60.633,-62.950,-62.950) |
geographic |
Deception Island |
geographic_facet |
Deception Island |
genre |
Antarc* Antarctica Deception Island |
genre_facet |
Antarc* Antarctica Deception Island |
op_relation |
#PLACEHOLDER_PARENT_METADATA_VALUE# info:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/CTM2016-79617-P info:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/PGC2018-095693-B-I00 Postprint https://doi.org/10.1016/j.chemgeo.2020.119595 Sí Chemical Geology, 542: 119595 (2020) 0009-2541 http://hdl.handle.net/10261/208392 doi:10.1016/j.chemgeo.2020.119595 http://dx.doi.org/10.13039/501100003329 |
op_rights |
open |
op_doi |
https://doi.org/10.1016/j.chemgeo.2020.11959510.13039/501100003329 |
_version_ |
1790593381597970432 |