Molybdenum isotope systematics in subduction zones

This study presents Mo isotope data for arc lavas from different subduction zones that range between δ98/95Mo=−0.72 and +0.07‰. Heaviest isotope values are observed for the most slab fluid dominated samples. Isotopically lighter signatures are related to increasing relevance of terrigenous sediment...

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Detalles Bibliográficos
Autores: König, Stephan, Wille, Martin, Voegelin, Andrea, Schoenberg, Ronny
Tipo de recurso: artículo
Estado:Versión aceptada para publicación
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:10261/414671
Acceso en línea:http://hdl.handle.net/10261/414671
https://doi.org/10.1016/j.epsl.2016.04.033
Access Level:acceso abierto
Palabra clave:Mo isotopes
Molybdenum
Subduction
Arc
Slab fluid
Sediments
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spelling Molybdenum isotope systematics in subduction zonesKönig, StephanWille, MartinVoegelin, AndreaSchoenberg, RonnyMo isotopesMolybdenumSubductionArcSlab fluidSedimentsThis study presents Mo isotope data for arc lavas from different subduction zones that range between δ98/95Mo=−0.72 and +0.07‰. Heaviest isotope values are observed for the most slab fluid dominated samples. Isotopically lighter signatures are related to increasing relevance of terrigenous sediment subduction and sediment melt components. Our observation complements previous conclusions that an isotopically heavy Mo fluid flux likely mirrors selective incorporation of isotopically light Mo in secondary minerals within the subducting slab. Analogue to this interpretation, low δ98/95Mo flux that coincides with terrigenous sediment subduction and sediment melting cannot be simply related to a recycled input signature. Instead, breakdown of the controlling secondary minerals during sediment melting may release the light component and lead to decreasing δ98/95Mo influx into subarc mantle sources. The natural range between slab dehydration and hydrous sediment melting may thus cause a large spread of δ98/95Mo in global subduction zone magmas.S.K. acknowledges a Starting Grant of the European Research Council (ERC STG O2RIGIN ). M.W. is supported by grant WI3870/2-1 from the Deutsche Forschungsgemeinschaft (DFG). The DFG is also thanked for funding sampling campaigns through Mu 1406/2 and Mu 1406/7.Peer reviewedElsevier BVEuropean Research CouncilEuropean CommissionGerman Research FoundationConsejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]202620262016info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Postprintinfo:eu-repo/semantics/acceptedVersionhttp://hdl.handle.net/10261/414671https://doi.org/10.1016/j.epsl.2016.04.033reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Inglés#PLACEHOLDER_PARENT_METADATA_VALUE#info:eu-repo/grantAgreement/EC/H2020/636808https://doi.org/10.1016/j.epsl.2016.04.033Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/4146712026-05-22T06:33:51Z
dc.title.none.fl_str_mv Molybdenum isotope systematics in subduction zones
title Molybdenum isotope systematics in subduction zones
spellingShingle Molybdenum isotope systematics in subduction zones
König, Stephan
Mo isotopes
Molybdenum
Subduction
Arc
Slab fluid
Sediments
title_short Molybdenum isotope systematics in subduction zones
title_full Molybdenum isotope systematics in subduction zones
title_fullStr Molybdenum isotope systematics in subduction zones
title_full_unstemmed Molybdenum isotope systematics in subduction zones
title_sort Molybdenum isotope systematics in subduction zones
dc.creator.none.fl_str_mv König, Stephan
Wille, Martin
Voegelin, Andrea
Schoenberg, Ronny
author König, Stephan
author_facet König, Stephan
Wille, Martin
Voegelin, Andrea
Schoenberg, Ronny
author_role author
author2 Wille, Martin
Voegelin, Andrea
Schoenberg, Ronny
author2_role author
author
author
dc.contributor.none.fl_str_mv European Research Council
European Commission
German Research Foundation
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Mo isotopes
Molybdenum
Subduction
Arc
Slab fluid
Sediments
topic Mo isotopes
Molybdenum
Subduction
Arc
Slab fluid
Sediments
description This study presents Mo isotope data for arc lavas from different subduction zones that range between δ98/95Mo=−0.72 and +0.07‰. Heaviest isotope values are observed for the most slab fluid dominated samples. Isotopically lighter signatures are related to increasing relevance of terrigenous sediment subduction and sediment melt components. Our observation complements previous conclusions that an isotopically heavy Mo fluid flux likely mirrors selective incorporation of isotopically light Mo in secondary minerals within the subducting slab. Analogue to this interpretation, low δ98/95Mo flux that coincides with terrigenous sediment subduction and sediment melting cannot be simply related to a recycled input signature. Instead, breakdown of the controlling secondary minerals during sediment melting may release the light component and lead to decreasing δ98/95Mo influx into subarc mantle sources. The natural range between slab dehydration and hydrous sediment melting may thus cause a large spread of δ98/95Mo in global subduction zone magmas.
publishDate 2016
dc.date.none.fl_str_mv 2016
2026
2026
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Postprint
info:eu-repo/semantics/acceptedVersion
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/414671
https://doi.org/10.1016/j.epsl.2016.04.033
url http://hdl.handle.net/10261/414671
https://doi.org/10.1016/j.epsl.2016.04.033
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv #PLACEHOLDER_PARENT_METADATA_VALUE#
info:eu-repo/grantAgreement/EC/H2020/636808
https://doi.org/10.1016/j.epsl.2016.04.033
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Elsevier BV
publisher.none.fl_str_mv Elsevier BV
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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