The Holocene volcanism at El Hierro: insights from petrology and geochemistry

The Holocene volcanism at El Hierro consists of basaltic monogenetic volcanic fields associated with o the three rift systems present in this island. In this work we report preliminary petrological and geochemical data of Holocene lava flows belonging to the WNW-striking rift. Sampling was focused i...

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Autores: Aulinas, Maritxell, Domínguez, Diego, Rodríguez González, Alejandro, Carmona, Héctor, Fernández Turiel, José Luis, Pérez Torrado, Francisco J., Carracedo, J. C., Arienzo, Ilenia, D’Antonio, Massimo
Tipo de recurso: artículo
Fecha de publicación:2019
País:España
Institución:Universidad de Huelva (UHU)
Repositorio:Arias Montano. Repositorio Institucional de la Universidad de Huelva
Idioma:inglés
OAI Identifier:oai:ariasmontano.uhu.es:10272/17287
Acceso en línea:http://hdl.handle.net/10272/17287
Access Level:acceso abierto
Palabra clave:El Hierro
Holocene
Volcanism
Petrology
Geochemistry
Holoceno
Volcanismo
Petrología
Geoquímica
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spelling The Holocene volcanism at El Hierro: insights from petrology and geochemistryEl volcanismo holoceno en El Hierro: petrología y geoquímicaAulinas, MaritxellDomínguez, DiegoRodríguez González, AlejandroCarmona, HéctorFernández Turiel, José LuisPérez Torrado, Francisco J.Carracedo, J. C.Arienzo, IleniaD’Antonio, MassimoEl HierroHoloceneVolcanismPetrologyGeochemistryHolocenoVolcanismoPetrologíaGeoquímicaThe Holocene volcanism at El Hierro consists of basaltic monogenetic volcanic fields associated with o the three rift systems present in this island. In this work we report preliminary petrological and geochemical data of Holocene lava flows belonging to the WNW-striking rift. Sampling was focused in three zones: Orchilla, Verodal-Sabinosa, and Tanganasoga. Petrography of the studied lavas shows that they are homogeneous. All samples are porphyritic with macrocrysts of clinopyroxene and olivine immersed in a groundmass formed by microcrysts of plagioclase, Fe-Ti oxides and clinopyroxene. Clinopyroxenes are diopsides, olivines have forsterite contents ranging from 74 to 84 % and anorthite in plagioclase varies from 66 to 76% (labradorite). Whole-rock geochemical results evidence that all magmas are basic in composition, ranging from picrobasalts to phonotephrites. Major, trace elements and isotope support fractional crystallization as the main process of magma evolution. However, petrography and chemistry of clinopyroxene cores agree with a xenocrystic nature of some of them. We suggest that these clinopyroxene cores crystallized from a genetically related magma and subsequently were entrapped or cannibalized by the basic rising magmasSociedad Geológica de España20192019-01-0120192019-01-01journal articlehttp://purl.org/coar/resource_type/c_6501info:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10272/17287reponame:Arias Montano. Repositorio Institucional de la Universidad de Huelvainstname:Universidad de Huelva (UHU)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2Atribución-NoComercial-SinDerivadas 3.0 Españahttp://creativecommons.org/licenses/by-nc-nd/3.0/es/info:eu-repo/semantics/openAccessoai:ariasmontano.uhu.es:10272/172872026-06-02T14:58:11Z
dc.title.none.fl_str_mv The Holocene volcanism at El Hierro: insights from petrology and geochemistry
El volcanismo holoceno en El Hierro: petrología y geoquímica
title The Holocene volcanism at El Hierro: insights from petrology and geochemistry
spellingShingle The Holocene volcanism at El Hierro: insights from petrology and geochemistry
Aulinas, Maritxell
El Hierro
Holocene
Volcanism
Petrology
Geochemistry
Holoceno
Volcanismo
Petrología
Geoquímica
title_short The Holocene volcanism at El Hierro: insights from petrology and geochemistry
title_full The Holocene volcanism at El Hierro: insights from petrology and geochemistry
title_fullStr The Holocene volcanism at El Hierro: insights from petrology and geochemistry
title_full_unstemmed The Holocene volcanism at El Hierro: insights from petrology and geochemistry
title_sort The Holocene volcanism at El Hierro: insights from petrology and geochemistry
dc.creator.none.fl_str_mv Aulinas, Maritxell
Domínguez, Diego
Rodríguez González, Alejandro
Carmona, Héctor
Fernández Turiel, José Luis
Pérez Torrado, Francisco J.
Carracedo, J. C.
Arienzo, Ilenia
D’Antonio, Massimo
author Aulinas, Maritxell
author_facet Aulinas, Maritxell
Domínguez, Diego
Rodríguez González, Alejandro
Carmona, Héctor
Fernández Turiel, José Luis
Pérez Torrado, Francisco J.
Carracedo, J. C.
Arienzo, Ilenia
D’Antonio, Massimo
author_role author
author2 Domínguez, Diego
Rodríguez González, Alejandro
Carmona, Héctor
Fernández Turiel, José Luis
Pérez Torrado, Francisco J.
Carracedo, J. C.
Arienzo, Ilenia
D’Antonio, Massimo
author2_role author
author
author
author
author
author
author
author
dc.contributor.none.fl_str_mv
dc.subject.none.fl_str_mv El Hierro
Holocene
Volcanism
Petrology
Geochemistry
Holoceno
Volcanismo
Petrología
Geoquímica
topic El Hierro
Holocene
Volcanism
Petrology
Geochemistry
Holoceno
Volcanismo
Petrología
Geoquímica
description The Holocene volcanism at El Hierro consists of basaltic monogenetic volcanic fields associated with o the three rift systems present in this island. In this work we report preliminary petrological and geochemical data of Holocene lava flows belonging to the WNW-striking rift. Sampling was focused in three zones: Orchilla, Verodal-Sabinosa, and Tanganasoga. Petrography of the studied lavas shows that they are homogeneous. All samples are porphyritic with macrocrysts of clinopyroxene and olivine immersed in a groundmass formed by microcrysts of plagioclase, Fe-Ti oxides and clinopyroxene. Clinopyroxenes are diopsides, olivines have forsterite contents ranging from 74 to 84 % and anorthite in plagioclase varies from 66 to 76% (labradorite). Whole-rock geochemical results evidence that all magmas are basic in composition, ranging from picrobasalts to phonotephrites. Major, trace elements and isotope support fractional crystallization as the main process of magma evolution. However, petrography and chemistry of clinopyroxene cores agree with a xenocrystic nature of some of them. We suggest that these clinopyroxene cores crystallized from a genetically related magma and subsequently were entrapped or cannibalized by the basic rising magmas
publishDate 2019
dc.date.none.fl_str_mv 2019
2019-01-01
2019
2019-01-01
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv http://hdl.handle.net/10272/17287
url http://hdl.handle.net/10272/17287
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
Atribución-NoComercial-SinDerivadas 3.0 España
http://creativecommons.org/licenses/by-nc-nd/3.0/es/
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
Atribución-NoComercial-SinDerivadas 3.0 España
http://creativecommons.org/licenses/by-nc-nd/3.0/es/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Sociedad Geológica de España
publisher.none.fl_str_mv Sociedad Geológica de España
dc.source.none.fl_str_mv reponame:Arias Montano. Repositorio Institucional de la Universidad de Huelva
instname:Universidad de Huelva (UHU)
instname_str Universidad de Huelva (UHU)
reponame_str Arias Montano. Repositorio Institucional de la Universidad de Huelva
collection Arias Montano. Repositorio Institucional de la Universidad de Huelva
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,812455

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