The fracture system and the melt emplacement beneath the Deception Island active volcano, South Shetland Islands, Antarctica
A new magnetotelluric (MT) survey, along with new topographic parametric sonar (TOPAS) profiles and geological field observations, were carried out on the Deception Island active volcano. 3-D resistivity models reveal an ENE–WSW elongated conductor located at a depth between two and ten kilometres b...
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2011
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ftcsic:oai:digital.csic.es:10261/277025 2024-02-11T09:57:19+01:00 The fracture system and the melt emplacement beneath the Deception Island active volcano, South Shetland Islands, Antarctica Pedrera Parias, Antonio Ruiz Constán, Ana Heredia, N. Galindo Zaldívar, Jesús Bohoyo, Fernando Marín Lechado, Carlos Ruano, Patricia Somoza, Luis Estrecho de Bransfield, Isla Decepción, Antártida 2011-10-28 http://hdl.handle.net/10261/277025 https://doi.org/10.1017/S0954102011000794 en eng Cambridge University Press #PLACEHOLDER_PARENT_METADATA_VALUE# POL2006.13836.C03.01 CTM2008-06386-CO2/ANT CGL2009-13706-CO3-01 CSD2006-0041 P09-RNM-5388 CGL2010-21048 CTM2011-30241-C02-02 https://www.cambridge.org/core/journals/antarctic-science/article/fracture-system-and-the-melt-emplacement-beneath-the-deception-island-active-volcano-south-shetland-islands-antarctica/0A5EFE44D0976212E27FB2E0FE5BCF51 Antarctic Science, vol. 24, n.2, 2012, 173–182 1365-2079 http://hdl.handle.net/10261/277025 https://doi.org/10.1017/S0954102011000794 open Estrecho de Bransfield fault magnetotelluric stress field Isla Decepción Antártida materia fundida artículo 2011 ftcsic https://doi.org/10.1017/S0954102011000794 2024-01-16T11:27:50Z A new magnetotelluric (MT) survey, along with new topographic parametric sonar (TOPAS) profiles and geological field observations, were carried out on the Deception Island active volcano. 3-D resistivity models reveal an ENE–WSW elongated conductor located at a depth between two and ten kilometres beneath the south-eastern part of the island, which we interpret as a combination of partial melt and hot fluids. The emplacement of the melt in the upper crust occurs along the ENE–WSW oriented, SSE dipping regional normal fault zone, which facilitates melt intrusion at shallower levels with volcanic eruptions and associated seismicity. Most of the onshore and offshore volcanic rocks are deformed by high-angle normal and sub-vertical faults with dominant dip-slip kinematics, distributed in sets roughly parallel and orthogonal to the major ENE–WSW regional tectonic trends. Faults development is related to perturbations of the regional stress field associated with magma chamber overpressure and deflation in a regional setting dominated by NW–SE to NNW–SSE extension Instituto Geológico y Minero de España, España Departamento de Geodinámica, Universidad de Granada, España Instituto Andaluz de Ciencias de la Tierra, Consejo Superior de Investigaciones Científicas, España Instituto Andaluz de Ciencias de la Tierra, Universidad de Granada, España Article in Journal/Newspaper Antarc* Antarctic Science Antarctica Antártida Deception Island South Shetland Islands Digital.CSIC (Spanish National Research Council) Bransfield Isla ENVELOPE(-56.633,-56.633,-63.183,-63.183) Deception Island ENVELOPE(-60.633,-60.633,-62.950,-62.950) Estrecho ENVELOPE(-60.783,-60.783,-62.467,-62.467) isla Decepción ENVELOPE(-60.633,-60.633,-62.950,-62.950) South Shetland Islands Antarctic Science 24 2 173 182 |
institution |
Open Polar |
collection |
Digital.CSIC (Spanish National Research Council) |
op_collection_id |
ftcsic |
language |
English |
topic |
Estrecho de Bransfield fault magnetotelluric stress field Isla Decepción Antártida materia fundida |
spellingShingle |
Estrecho de Bransfield fault magnetotelluric stress field Isla Decepción Antártida materia fundida Pedrera Parias, Antonio Ruiz Constán, Ana Heredia, N. Galindo Zaldívar, Jesús Bohoyo, Fernando Marín Lechado, Carlos Ruano, Patricia Somoza, Luis The fracture system and the melt emplacement beneath the Deception Island active volcano, South Shetland Islands, Antarctica |
topic_facet |
Estrecho de Bransfield fault magnetotelluric stress field Isla Decepción Antártida materia fundida |
description |
A new magnetotelluric (MT) survey, along with new topographic parametric sonar (TOPAS) profiles and geological field observations, were carried out on the Deception Island active volcano. 3-D resistivity models reveal an ENE–WSW elongated conductor located at a depth between two and ten kilometres beneath the south-eastern part of the island, which we interpret as a combination of partial melt and hot fluids. The emplacement of the melt in the upper crust occurs along the ENE–WSW oriented, SSE dipping regional normal fault zone, which facilitates melt intrusion at shallower levels with volcanic eruptions and associated seismicity. Most of the onshore and offshore volcanic rocks are deformed by high-angle normal and sub-vertical faults with dominant dip-slip kinematics, distributed in sets roughly parallel and orthogonal to the major ENE–WSW regional tectonic trends. Faults development is related to perturbations of the regional stress field associated with magma chamber overpressure and deflation in a regional setting dominated by NW–SE to NNW–SSE extension Instituto Geológico y Minero de España, España Departamento de Geodinámica, Universidad de Granada, España Instituto Andaluz de Ciencias de la Tierra, Consejo Superior de Investigaciones Científicas, España Instituto Andaluz de Ciencias de la Tierra, Universidad de Granada, España |
format |
Article in Journal/Newspaper |
author |
Pedrera Parias, Antonio Ruiz Constán, Ana Heredia, N. Galindo Zaldívar, Jesús Bohoyo, Fernando Marín Lechado, Carlos Ruano, Patricia Somoza, Luis |
author_facet |
Pedrera Parias, Antonio Ruiz Constán, Ana Heredia, N. Galindo Zaldívar, Jesús Bohoyo, Fernando Marín Lechado, Carlos Ruano, Patricia Somoza, Luis |
author_sort |
Pedrera Parias, Antonio |
title |
The fracture system and the melt emplacement beneath the Deception Island active volcano, South Shetland Islands, Antarctica |
title_short |
The fracture system and the melt emplacement beneath the Deception Island active volcano, South Shetland Islands, Antarctica |
title_full |
The fracture system and the melt emplacement beneath the Deception Island active volcano, South Shetland Islands, Antarctica |
title_fullStr |
The fracture system and the melt emplacement beneath the Deception Island active volcano, South Shetland Islands, Antarctica |
title_full_unstemmed |
The fracture system and the melt emplacement beneath the Deception Island active volcano, South Shetland Islands, Antarctica |
title_sort |
fracture system and the melt emplacement beneath the deception island active volcano, south shetland islands, antarctica |
publisher |
Cambridge University Press |
publishDate |
2011 |
url |
http://hdl.handle.net/10261/277025 https://doi.org/10.1017/S0954102011000794 |
op_coverage |
Estrecho de Bransfield, Isla Decepción, Antártida |
long_lat |
ENVELOPE(-56.633,-56.633,-63.183,-63.183) ENVELOPE(-60.633,-60.633,-62.950,-62.950) ENVELOPE(-60.783,-60.783,-62.467,-62.467) ENVELOPE(-60.633,-60.633,-62.950,-62.950) |
geographic |
Bransfield Isla Deception Island Estrecho isla Decepción South Shetland Islands |
geographic_facet |
Bransfield Isla Deception Island Estrecho isla Decepción South Shetland Islands |
genre |
Antarc* Antarctic Science Antarctica Antártida Deception Island South Shetland Islands |
genre_facet |
Antarc* Antarctic Science Antarctica Antártida Deception Island South Shetland Islands |
op_relation |
#PLACEHOLDER_PARENT_METADATA_VALUE# POL2006.13836.C03.01 CTM2008-06386-CO2/ANT CGL2009-13706-CO3-01 CSD2006-0041 P09-RNM-5388 CGL2010-21048 CTM2011-30241-C02-02 https://www.cambridge.org/core/journals/antarctic-science/article/fracture-system-and-the-melt-emplacement-beneath-the-deception-island-active-volcano-south-shetland-islands-antarctica/0A5EFE44D0976212E27FB2E0FE5BCF51 Antarctic Science, vol. 24, n.2, 2012, 173–182 1365-2079 http://hdl.handle.net/10261/277025 https://doi.org/10.1017/S0954102011000794 |
op_rights |
open |
op_doi |
https://doi.org/10.1017/S0954102011000794 |
container_title |
Antarctic Science |
container_volume |
24 |
container_issue |
2 |
container_start_page |
173 |
op_container_end_page |
182 |
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1790609620997242880 |