Glauconitic laminated crusts from Jurassic pillow-lava deposits (Betic Cordillera, South Spain)

An exceptional record of Jurassic glauconitic laminated crusts is reported from veins of spaces among pillow-lava bodies in the Middle Subbetic (Betic Cordillera). The veins are composed by green crusts with planar (<36 mm thick), columnar (<130 mm length) and oncoid-like morphologies...

Descripción completa

Detalles Bibliográficos
Autores: Reolid, Matías, Abad, Isabel
Tipo de recurso: artículo
Fecha de publicación:2013
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:10272/7795
Acceso en línea:http://hdl.handle.net/10272/7795
Access Level:acceso abierto
Palabra clave:Clay minerals
Hydrothermal alteration
Jurassic
Middle Subbetic
Minerales de la arcilla
Alteración hidrotermal
Jurásico
Subbético Medio
id ES_bc88e3f3adf73ce42e1c8a7ceeb89ddf
oai_identifier_str oai:ariasmontano.uhu.es:10272/7795
network_acronym_str ES
network_name_str España
repository_id_str
spelling Glauconitic laminated crusts from Jurassic pillow-lava deposits (Betic Cordillera, South Spain)Costras laminadas glauconíticas de depósitos de lavas almohadilladas del Jurásico (Cordillera Bética, Sur de España)Reolid, MatíasAbad, IsabelClay mineralsHydrothermal alterationJurassicMiddle SubbeticMinerales de la arcillaAlteración hidrotermalJurásicoSubbético MedioAn exceptional record of Jurassic glauconitic laminated crusts is reported from veins of spaces among pillow-lava bodies in the Middle Subbetic (Betic Cordillera). The veins are composed by green crusts with planar (<36 mm thick), columnar (<130 mm length) and oncoid-like morphologies growing from the pillow-lava walls. Mineralogical and geochemical analyses of the green crusts led us to identify lath-like crystals of glauconite and minority filmy veil-like smectites (saponite and beidellite), calcite and iron oxides. The composition of clay minerals and their association with carbonates reveal whether the alteration occurred under oxidizing or reducing conditions. The main phase of hydrothermal alteration occurred under low temperature oxidizing conditions with a high sea-water/rock ratio, in an open-circulation regime, with precipitation of glauconite. The late phase of alteration is typified by the formation of saponite and calcite, and took place under confined conditions due to the burial of pillow-lava by marine sediment20132013-01-0120132013-01-01journal articlehttp://purl.org/coar/resource_type/c_6501info:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10272/7795reponame: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:10272/77952026-06-02T14:58:11Z
dc.title.none.fl_str_mv Glauconitic laminated crusts from Jurassic pillow-lava deposits (Betic Cordillera, South Spain)
Costras laminadas glauconíticas de depósitos de lavas almohadilladas del Jurásico (Cordillera Bética, Sur de España)
title Glauconitic laminated crusts from Jurassic pillow-lava deposits (Betic Cordillera, South Spain)
spellingShingle Glauconitic laminated crusts from Jurassic pillow-lava deposits (Betic Cordillera, South Spain)
Reolid, Matías
Clay minerals
Hydrothermal alteration
Jurassic
Middle Subbetic
Minerales de la arcilla
Alteración hidrotermal
Jurásico
Subbético Medio
title_short Glauconitic laminated crusts from Jurassic pillow-lava deposits (Betic Cordillera, South Spain)
title_full Glauconitic laminated crusts from Jurassic pillow-lava deposits (Betic Cordillera, South Spain)
title_fullStr Glauconitic laminated crusts from Jurassic pillow-lava deposits (Betic Cordillera, South Spain)
title_full_unstemmed Glauconitic laminated crusts from Jurassic pillow-lava deposits (Betic Cordillera, South Spain)
title_sort Glauconitic laminated crusts from Jurassic pillow-lava deposits (Betic Cordillera, South Spain)
dc.creator.none.fl_str_mv Reolid, Matías
Abad, Isabel
author Reolid, Matías
author_facet Reolid, Matías
Abad, Isabel
author_role author
author2 Abad, Isabel
author2_role author
dc.contributor.none.fl_str_mv
dc.subject.none.fl_str_mv Clay minerals
Hydrothermal alteration
Jurassic
Middle Subbetic
Minerales de la arcilla
Alteración hidrotermal
Jurásico
Subbético Medio
topic Clay minerals
Hydrothermal alteration
Jurassic
Middle Subbetic
Minerales de la arcilla
Alteración hidrotermal
Jurásico
Subbético Medio
description An exceptional record of Jurassic glauconitic laminated crusts is reported from veins of spaces among pillow-lava bodies in the Middle Subbetic (Betic Cordillera). The veins are composed by green crusts with planar (<36 mm thick), columnar (<130 mm length) and oncoid-like morphologies growing from the pillow-lava walls. Mineralogical and geochemical analyses of the green crusts led us to identify lath-like crystals of glauconite and minority filmy veil-like smectites (saponite and beidellite), calcite and iron oxides. The composition of clay minerals and their association with carbonates reveal whether the alteration occurred under oxidizing or reducing conditions. The main phase of hydrothermal alteration occurred under low temperature oxidizing conditions with a high sea-water/rock ratio, in an open-circulation regime, with precipitation of glauconite. The late phase of alteration is typified by the formation of saponite and calcite, and took place under confined conditions due to the burial of pillow-lava by marine sediment
publishDate 2013
dc.date.none.fl_str_mv 2013
2013-01-01
2013
2013-01-01
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/10272/7795
url http://hdl.handle.net/10272/7795
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.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
_version_ 1869418122188947456
score 15,81155

Similares en LA Referencia