Significance of Fracture-Filling Rose-Like Calcite Crystal Clusters in the SE Pyrenees

Fracture-filling rose-like clusters of bladed calcite crystals are found in the northern sector of the Cadí thrust sheet (SE Pyrenees). This unusual calcite crystal morphology has been characterized by using optical and electron microscope, X-ray diffraction, Raman spectroscopy, δ18O, δ13C, 87Sr/86S...

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Autores: Cruset, David, Ibáñez Insa, Jordi, Cantarero, Irene, John, Cédric M., Travé, A.
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2020
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:dnet:digitalcsic_::2b81ddc06489e1fbbff799ce8377b69c
Acceso en línea:http://hdl.handle.net/10261/214943
Access Level:acceso abierto
Palabra clave:Fluid migration
Fractures
Rose-like calcite clusters
Crystal morphology
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spelling Significance of Fracture-Filling Rose-Like Calcite Crystal Clusters in the SE PyreneesCruset, DavidIbáñez Insa, JordiCantarero, IreneJohn, Cédric M.Travé, A.Fluid migrationFracturesRose-like calcite clustersCrystal morphologyFracture-filling rose-like clusters of bladed calcite crystals are found in the northern sector of the Cadí thrust sheet (SE Pyrenees). This unusual calcite crystal morphology has been characterized by using optical and electron microscope, X-ray diffraction, Raman spectroscopy, δ18O, δ13C, 87Sr/86Sr, clumped isotopes, and major and rare earth elements + yttrium (REEs + Y) analysis. Petrographic observations and powder X-ray diffraction measurements indicate that these bladed crystals are mainly made of massive rhombic crystals with the conventional (104) faces, as well as of possibly younger, less abundant, and smaller laminar crystals displaying (108) and/or ( 1¯ 08) rhombic faces. Raman analysis of liquid fluid inclusions indicates the presence of aromatic hydrocarbons and occasionally alkanes. Clumped isotopes thermometry reflects that bladed calcite precipitated from meteoric fluids at ~60–65 °C. The 87Sr/86Sr ratios and major elements and REEs content of calcite indicate that these fluids interacted with Eocene marine carbonates. The presence of younger ‘nailhead’ calcite indicates later migration of shallow fresh groundwater. The results reveal that rose-like calcite clusters precipitated, at least in the studied area, due to a CO2 release by boiling of meteoric waters that mixed with benzene and aromatic hydrocarbons. This mixing decreased the boiling temperature at ~60–65 °C. The results also suggest that the high Sr content in calcite, and probably the presence of proteins within hydrocarbons trapped in fluid inclusions, controlled the precipitation of bladed crystals with (104) rhombohedral facesThis research was funded by DGICYT Spanish Project PGC2018-093903-B-C22 Ministerio de Ciencia, Innovación y Universidades/Agencia Estatal de Investigación/Fondo Europeo de Desarrollo Regional, Unión Europea, Grup Consolidat de Recerca ”Geologia Sedimentària” (2017SGR-824).Peer reviewedMultidisciplinary Digital Publishing InstituteDirección General de Investigación Científica y Técnica, DGICT (España)Ministerio de Ciencia, Innovación y Universidades (España)Ibáñez Insa, Jordi [0000-0002-8909-6541]Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]202020202020info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Publisher's versioninfo:eu-repo/semantics/publishedVersionhttp://hdl.handle.net/10261/214943reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Inglés#PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE#info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PGC2018-093903-B-C22PGC2018-093903-B-C22/AEI/10.13039/501100011033https://doi.org/10.3390/min10060522Síinfo:eu-repo/semantics/openAccessoai:dnet:digitalcsic_::2b81ddc06489e1fbbff799ce8377b69c2026-05-22T06:33:51Z
dc.title.none.fl_str_mv Significance of Fracture-Filling Rose-Like Calcite Crystal Clusters in the SE Pyrenees
title Significance of Fracture-Filling Rose-Like Calcite Crystal Clusters in the SE Pyrenees
spellingShingle Significance of Fracture-Filling Rose-Like Calcite Crystal Clusters in the SE Pyrenees
Cruset, David
Fluid migration
Fractures
Rose-like calcite clusters
Crystal morphology
title_short Significance of Fracture-Filling Rose-Like Calcite Crystal Clusters in the SE Pyrenees
title_full Significance of Fracture-Filling Rose-Like Calcite Crystal Clusters in the SE Pyrenees
title_fullStr Significance of Fracture-Filling Rose-Like Calcite Crystal Clusters in the SE Pyrenees
title_full_unstemmed Significance of Fracture-Filling Rose-Like Calcite Crystal Clusters in the SE Pyrenees
title_sort Significance of Fracture-Filling Rose-Like Calcite Crystal Clusters in the SE Pyrenees
dc.creator.none.fl_str_mv Cruset, David
Ibáñez Insa, Jordi
Cantarero, Irene
John, Cédric M.
Travé, A.
author Cruset, David
author_facet Cruset, David
Ibáñez Insa, Jordi
Cantarero, Irene
John, Cédric M.
Travé, A.
author_role author
author2 Ibáñez Insa, Jordi
Cantarero, Irene
John, Cédric M.
Travé, A.
author2_role author
author
author
author
dc.contributor.none.fl_str_mv Dirección General de Investigación Científica y Técnica, DGICT (España)
Ministerio de Ciencia, Innovación y Universidades (España)
Ibáñez Insa, Jordi [0000-0002-8909-6541]
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Fluid migration
Fractures
Rose-like calcite clusters
Crystal morphology
topic Fluid migration
Fractures
Rose-like calcite clusters
Crystal morphology
description Fracture-filling rose-like clusters of bladed calcite crystals are found in the northern sector of the Cadí thrust sheet (SE Pyrenees). This unusual calcite crystal morphology has been characterized by using optical and electron microscope, X-ray diffraction, Raman spectroscopy, δ18O, δ13C, 87Sr/86Sr, clumped isotopes, and major and rare earth elements + yttrium (REEs + Y) analysis. Petrographic observations and powder X-ray diffraction measurements indicate that these bladed crystals are mainly made of massive rhombic crystals with the conventional (104) faces, as well as of possibly younger, less abundant, and smaller laminar crystals displaying (108) and/or ( 1¯ 08) rhombic faces. Raman analysis of liquid fluid inclusions indicates the presence of aromatic hydrocarbons and occasionally alkanes. Clumped isotopes thermometry reflects that bladed calcite precipitated from meteoric fluids at ~60–65 °C. The 87Sr/86Sr ratios and major elements and REEs content of calcite indicate that these fluids interacted with Eocene marine carbonates. The presence of younger ‘nailhead’ calcite indicates later migration of shallow fresh groundwater. The results reveal that rose-like calcite clusters precipitated, at least in the studied area, due to a CO2 release by boiling of meteoric waters that mixed with benzene and aromatic hydrocarbons. This mixing decreased the boiling temperature at ~60–65 °C. The results also suggest that the high Sr content in calcite, and probably the presence of proteins within hydrocarbons trapped in fluid inclusions, controlled the precipitation of bladed crystals with (104) rhombohedral faces
publishDate 2020
dc.date.none.fl_str_mv 2020
2020
2020
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/10261/214943
url http://hdl.handle.net/10261/214943
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv #PLACEHOLDER_PARENT_METADATA_VALUE#
#PLACEHOLDER_PARENT_METADATA_VALUE#
info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PGC2018-093903-B-C22
PGC2018-093903-B-C22/AEI/10.13039/501100011033
https://doi.org/10.3390/min10060522
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Multidisciplinary Digital Publishing Institute
publisher.none.fl_str_mv Multidisciplinary Digital Publishing Institute
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
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