Opaline chert nodules in maar lake sediments from Camp dels Ninots (La Selva Basin, NE Spain)

Chert nodule samples from three different well cores (CC, CP1 & CA) from the lacustrine infill of the Camp dels Ninot maar-diatreme (La Selva Basin) have been studied by means of X-ray diffraction, and optical and electron microscope technique. The chert nodules replace diatomites and carbonates...

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Detalles Bibliográficos
Autores: Miró, Jordi, Martín-Martín, J., Ibáñez Insa, Jordi, Anadón, Pere, Oms, Oriol, Tritlla, J., Caja, M. A.
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2016
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/147267
Acceso en línea:http://hdl.handle.net/10261/147267
Access Level:acceso abierto
Palabra clave:chert nodules
maar
lacustrine
opal-A, opal-A/CT
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repository_id_str
spelling Opaline chert nodules in maar lake sediments from Camp dels Ninots (La Selva Basin, NE Spain)Miró, JordiMartín-Martín, J.Ibáñez Insa, JordiAnadón, PereOms, OriolTritlla, J.Caja, M. A.chert nodulesmaarlacustrineopal-A, opal-A/CTChert nodule samples from three different well cores (CC, CP1 & CA) from the lacustrine infill of the Camp dels Ninot maar-diatreme (La Selva Basin) have been studied by means of X-ray diffraction, and optical and electron microscope technique. The chert nodules replace diatomites and carbonates layers, and varies in mineralogy between opal-A to opal-A/CT. The microtexture of the opal-A rich nodules is characterized by smooth microspheres of ~2μm in diameter that forms aggregates of amalgamated microspheres. Commonly, the nodules contain diatoms and their moulds when replacing diatomites, and dolomite or ankerite crystals and their moulds when replacing carbonates. The opal-A/CT rich nodules exhibit a microtexture consisting of microspheres of ~8μm in diameter that form aggregates with botryoidal and finger-like morphologies. Results indicate that the early diagenetic transformation of opal-A to opal-CT is not complete in the studied sediments.Peer ReviewedSociedad Geológica de EspañaConsejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]2017201720162017info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Publisher's versioninfo:eu-repo/semantics/publishedVersionhttp://hdl.handle.net/10261/147267reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)InglésSíinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/1472672026-05-22T06:33:51Z
dc.title.none.fl_str_mv Opaline chert nodules in maar lake sediments from Camp dels Ninots (La Selva Basin, NE Spain)
title Opaline chert nodules in maar lake sediments from Camp dels Ninots (La Selva Basin, NE Spain)
spellingShingle Opaline chert nodules in maar lake sediments from Camp dels Ninots (La Selva Basin, NE Spain)
Miró, Jordi
chert nodules
maar
lacustrine
opal-A, opal-A/CT
title_short Opaline chert nodules in maar lake sediments from Camp dels Ninots (La Selva Basin, NE Spain)
title_full Opaline chert nodules in maar lake sediments from Camp dels Ninots (La Selva Basin, NE Spain)
title_fullStr Opaline chert nodules in maar lake sediments from Camp dels Ninots (La Selva Basin, NE Spain)
title_full_unstemmed Opaline chert nodules in maar lake sediments from Camp dels Ninots (La Selva Basin, NE Spain)
title_sort Opaline chert nodules in maar lake sediments from Camp dels Ninots (La Selva Basin, NE Spain)
dc.creator.none.fl_str_mv Miró, Jordi
Martín-Martín, J.
Ibáñez Insa, Jordi
Anadón, Pere
Oms, Oriol
Tritlla, J.
Caja, M. A.
author Miró, Jordi
author_facet Miró, Jordi
Martín-Martín, J.
Ibáñez Insa, Jordi
Anadón, Pere
Oms, Oriol
Tritlla, J.
Caja, M. A.
author_role author
author2 Martín-Martín, J.
Ibáñez Insa, Jordi
Anadón, Pere
Oms, Oriol
Tritlla, J.
Caja, M. A.
author2_role author
author
author
author
author
author
dc.contributor.none.fl_str_mv Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv chert nodules
maar
lacustrine
opal-A, opal-A/CT
topic chert nodules
maar
lacustrine
opal-A, opal-A/CT
description Chert nodule samples from three different well cores (CC, CP1 & CA) from the lacustrine infill of the Camp dels Ninot maar-diatreme (La Selva Basin) have been studied by means of X-ray diffraction, and optical and electron microscope technique. The chert nodules replace diatomites and carbonates layers, and varies in mineralogy between opal-A to opal-A/CT. The microtexture of the opal-A rich nodules is characterized by smooth microspheres of ~2μm in diameter that forms aggregates of amalgamated microspheres. Commonly, the nodules contain diatoms and their moulds when replacing diatomites, and dolomite or ankerite crystals and their moulds when replacing carbonates. The opal-A/CT rich nodules exhibit a microtexture consisting of microspheres of ~8μm in diameter that form aggregates with botryoidal and finger-like morphologies. Results indicate that the early diagenetic transformation of opal-A to opal-CT is not complete in the studied sediments.
publishDate 2016
dc.date.none.fl_str_mv 2016
2017
2017
2017
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Publisher's version
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/147267
url http://hdl.handle.net/10261/147267
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
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: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_ 1869402858394222592
score 15.81155

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