Mineralogy of the Hydrothermal Alteration in the Námafjall Geothermal Field (Iceland)

Present-day rift zones in Iceland commonly develop high-temperature geothermal systems related to central volcanoes (Trønnes, 2003). This study was developed at the high-temperature geothermal field of Námafjall, located at the Iceland Northern Rift Zone, near the Krafla central volcano. In this are...

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Detalles Bibliográficos
Autores: Albert Mínguez, Helena, Ortega, Lorena, Lunar, Rosario, Martínez-Frías, J., Piña, Rubén
Tipo de recurso: artículo
Fecha de publicación:2011
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/61903
Acceso en línea:http://hdl.handle.net/10261/61903
Access Level:acceso abierto
Palabra clave:Alteración hidrotermal
Campo geotérmico
Esmectita
Caolinita
Islandia
Námafjall
Hydrothermal alteration
Geothermal field
Smectite
Kaolinite
Iceland
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spelling Mineralogy of the Hydrothermal Alteration in the Námafjall Geothermal Field (Iceland)Albert Mínguez, HelenaOrtega, LorenaLunar, RosarioMartínez-Frías, J.Piña, RubénAlteración hidrotermalCampo geotérmicoEsmectitaCaolinitaIslandiaNámafjallHydrothermal alterationGeothermal fieldSmectiteKaoliniteIcelandPresent-day rift zones in Iceland commonly develop high-temperature geothermal systems related to central volcanoes (Trønnes, 2003). This study was developed at the high-temperature geothermal field of Námafjall, located at the Iceland Northern Rift Zone, near the Krafla central volcano. In this area, the constant hydrothermal activity alters Pleistocene hyaloclastites sequences and Holocene lavas and scoria cones especially to clay minerals. Different degrees of alteration, anisotropic distribution of fissures, faults and permeable zones, and accumulation of different minerals, generates a spotty distribution of red, brown, yellow, pink and white patches, reflecting the mosaic character of hydrothermal alteration (Geptner et al., 2005, 2007). A detailed mineralogical study of the altered volcanic rocks from the outer edge of the Námafjall geothermal field has been carried out in order to determine the surface alteration processes associated with geothermal activity, inferring pH conditions and, where appropriate, the temperature of the alteration processes.Peer reviewedSociedad Española de Mineralogía201220122011info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501http://hdl.handle.net/10261/61903reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Ingléshttp://www.ehu.es/sem/macla_pdf/macla15/Macla15_025.pdfinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/619032026-05-22T06:33:51Z
dc.title.none.fl_str_mv Mineralogy of the Hydrothermal Alteration in the Námafjall Geothermal Field (Iceland)
title Mineralogy of the Hydrothermal Alteration in the Námafjall Geothermal Field (Iceland)
spellingShingle Mineralogy of the Hydrothermal Alteration in the Námafjall Geothermal Field (Iceland)
Albert Mínguez, Helena
Alteración hidrotermal
Campo geotérmico
Esmectita
Caolinita
Islandia
Námafjall
Hydrothermal alteration
Geothermal field
Smectite
Kaolinite
Iceland
title_short Mineralogy of the Hydrothermal Alteration in the Námafjall Geothermal Field (Iceland)
title_full Mineralogy of the Hydrothermal Alteration in the Námafjall Geothermal Field (Iceland)
title_fullStr Mineralogy of the Hydrothermal Alteration in the Námafjall Geothermal Field (Iceland)
title_full_unstemmed Mineralogy of the Hydrothermal Alteration in the Námafjall Geothermal Field (Iceland)
title_sort Mineralogy of the Hydrothermal Alteration in the Námafjall Geothermal Field (Iceland)
dc.creator.none.fl_str_mv Albert Mínguez, Helena
Ortega, Lorena
Lunar, Rosario
Martínez-Frías, J.
Piña, Rubén
author Albert Mínguez, Helena
author_facet Albert Mínguez, Helena
Ortega, Lorena
Lunar, Rosario
Martínez-Frías, J.
Piña, Rubén
author_role author
author2 Ortega, Lorena
Lunar, Rosario
Martínez-Frías, J.
Piña, Rubén
author2_role author
author
author
author
dc.subject.none.fl_str_mv Alteración hidrotermal
Campo geotérmico
Esmectita
Caolinita
Islandia
Námafjall
Hydrothermal alteration
Geothermal field
Smectite
Kaolinite
Iceland
topic Alteración hidrotermal
Campo geotérmico
Esmectita
Caolinita
Islandia
Námafjall
Hydrothermal alteration
Geothermal field
Smectite
Kaolinite
Iceland
description Present-day rift zones in Iceland commonly develop high-temperature geothermal systems related to central volcanoes (Trønnes, 2003). This study was developed at the high-temperature geothermal field of Námafjall, located at the Iceland Northern Rift Zone, near the Krafla central volcano. In this area, the constant hydrothermal activity alters Pleistocene hyaloclastites sequences and Holocene lavas and scoria cones especially to clay minerals. Different degrees of alteration, anisotropic distribution of fissures, faults and permeable zones, and accumulation of different minerals, generates a spotty distribution of red, brown, yellow, pink and white patches, reflecting the mosaic character of hydrothermal alteration (Geptner et al., 2005, 2007). A detailed mineralogical study of the altered volcanic rocks from the outer edge of the Námafjall geothermal field has been carried out in order to determine the surface alteration processes associated with geothermal activity, inferring pH conditions and, where appropriate, the temperature of the alteration processes.
publishDate 2011
dc.date.none.fl_str_mv 2011
2012
2012
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
format article
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/61903
url http://hdl.handle.net/10261/61903
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv http://www.ehu.es/sem/macla_pdf/macla15/Macla15_025.pdf
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Sociedad Española de Mineralogía
publisher.none.fl_str_mv Sociedad Española de Mineralogía
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
_version_ 1869403767428874240
score 15,811543

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