Zircon Dates Long-Lived Plume Dynamics in Oceanic Islands

In this contribution we report the first systematic study of zircon U-Pb geochronology and δO-εHf isotope geochemistry from 10 islands of the hot-spot related Galapagos Archipelago. The data extracted from the zircons allow them to be grouped into three types: (a) young zircons (0–∼4 Ma) with εHf (∼...

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Autores: Rojas-Agramonte, Yamirka, Kaus, Boris J. P., Piccolo, A., Williams, Ian S., Gerdes, Axel, Wong, Jean, Xie, Hang Xian, Buhre, Stephan, Toulkeridis, Theofilos, Montero, Pilar, García-Casco, Antonio
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2022
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/359472
Acceso en línea:http://hdl.handle.net/10261/359472
Access Level:acceso abierto
Palabra clave:Asthenospheric zircon
Galapagos zircon ages
Mantle plume
Oceanic islands
Thermo-mechanical numerical experiments
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spelling Zircon Dates Long-Lived Plume Dynamics in Oceanic IslandsRojas-Agramonte, YamirkaKaus, Boris J. P.Piccolo, A.Williams, Ian S.Gerdes, AxelWong, JeanXie, Hang XianBuhre, StephanToulkeridis, TheofilosMontero, PilarGarcía-Casco, AntonioAsthenospheric zirconGalapagos zircon agesMantle plumeOceanic islandsThermo-mechanical numerical experimentsIn this contribution we report the first systematic study of zircon U-Pb geochronology and δO-εHf isotope geochemistry from 10 islands of the hot-spot related Galapagos Archipelago. The data extracted from the zircons allow them to be grouped into three types: (a) young zircons (0–∼4 Ma) with εHf (∼5–13) and δO (∼4–7) isotopic mantle signature with crystallization ages dating the islands, (b) zircons with εHf (∼5–13) and δO (∼5–7) isotopic mantle signature (∼4–164 Ma) which are interpreted to date the time of plume activity below the islands (∼164 Ma is the minimum time of impingement of the plume below the lithosphere), and (c) very old zircons (∼213–3,000 Ma) with mostly continental (but also juvenile) εHf (∼−28–8) and δO (∼5–11) isotopic values documenting potential contamination from a number of sources. The first two types with similar isotopic mantle signature define what we call the Galápagos Plume Array (GPA). Given lithospheric plate motion, this result implies that GPA zircon predating the Galápagos lithosphere (i.e., >14–164 Ma) formed and were stored at sublithospheric depths for extended periods of time. In order to explain these observations, we performed 2D and 3D thermo-mechanical numerical experiments of plume-lithosphere interaction which show that dynamic plume activity gives rise to complex asthenospheric flow patterns and results in distinct long-lasting mantle domains beneath a moving lithosphere. This demonstrates that it is physically plausible that old plume-derived zircons survive at asthenospheric depths below ocean islands.This study was supported by the Deutsche Forschungsgemeinschaft Grant RO4174/3‐1 and RO4174/3‐3 to YR‐A and SB, MICINN PID2019‐105625RB‐C21, PY20_00550 to AG‐C. BK acknowledges funding from ERC Consolidator Grant MAGMA 771143.Wiley-VCHAmerican Geophysical UnionMinisterio de Ciencia e Innovación (España)European CommissionEuropean Research CouncilConsejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]2024202420222024info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Publisher's versioninfo:eu-repo/semantics/publishedVersionhttp://hdl.handle.net/10261/359472reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Inglés#PLACEHOLDER_PARENT_METADATA_VALUE#info:eu-repo/grantAgreement/MICINN//PID2019‐105625RB‐C21http://dx.doi.org/10.1029/2022GC010485Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/3594722026-05-22T06:33:51Z
dc.title.none.fl_str_mv Zircon Dates Long-Lived Plume Dynamics in Oceanic Islands
title Zircon Dates Long-Lived Plume Dynamics in Oceanic Islands
spellingShingle Zircon Dates Long-Lived Plume Dynamics in Oceanic Islands
Rojas-Agramonte, Yamirka
Asthenospheric zircon
Galapagos zircon ages
Mantle plume
Oceanic islands
Thermo-mechanical numerical experiments
title_short Zircon Dates Long-Lived Plume Dynamics in Oceanic Islands
title_full Zircon Dates Long-Lived Plume Dynamics in Oceanic Islands
title_fullStr Zircon Dates Long-Lived Plume Dynamics in Oceanic Islands
title_full_unstemmed Zircon Dates Long-Lived Plume Dynamics in Oceanic Islands
title_sort Zircon Dates Long-Lived Plume Dynamics in Oceanic Islands
dc.creator.none.fl_str_mv Rojas-Agramonte, Yamirka
Kaus, Boris J. P.
Piccolo, A.
Williams, Ian S.
Gerdes, Axel
Wong, Jean
Xie, Hang Xian
Buhre, Stephan
Toulkeridis, Theofilos
Montero, Pilar
García-Casco, Antonio
author Rojas-Agramonte, Yamirka
author_facet Rojas-Agramonte, Yamirka
Kaus, Boris J. P.
Piccolo, A.
Williams, Ian S.
Gerdes, Axel
Wong, Jean
Xie, Hang Xian
Buhre, Stephan
Toulkeridis, Theofilos
Montero, Pilar
García-Casco, Antonio
author_role author
author2 Kaus, Boris J. P.
Piccolo, A.
Williams, Ian S.
Gerdes, Axel
Wong, Jean
Xie, Hang Xian
Buhre, Stephan
Toulkeridis, Theofilos
Montero, Pilar
García-Casco, Antonio
author2_role author
author
author
author
author
author
author
author
author
author
dc.contributor.none.fl_str_mv Ministerio de Ciencia e Innovación (España)
European Commission
European Research Council
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Asthenospheric zircon
Galapagos zircon ages
Mantle plume
Oceanic islands
Thermo-mechanical numerical experiments
topic Asthenospheric zircon
Galapagos zircon ages
Mantle plume
Oceanic islands
Thermo-mechanical numerical experiments
description In this contribution we report the first systematic study of zircon U-Pb geochronology and δO-εHf isotope geochemistry from 10 islands of the hot-spot related Galapagos Archipelago. The data extracted from the zircons allow them to be grouped into three types: (a) young zircons (0–∼4 Ma) with εHf (∼5–13) and δO (∼4–7) isotopic mantle signature with crystallization ages dating the islands, (b) zircons with εHf (∼5–13) and δO (∼5–7) isotopic mantle signature (∼4–164 Ma) which are interpreted to date the time of plume activity below the islands (∼164 Ma is the minimum time of impingement of the plume below the lithosphere), and (c) very old zircons (∼213–3,000 Ma) with mostly continental (but also juvenile) εHf (∼−28–8) and δO (∼5–11) isotopic values documenting potential contamination from a number of sources. The first two types with similar isotopic mantle signature define what we call the Galápagos Plume Array (GPA). Given lithospheric plate motion, this result implies that GPA zircon predating the Galápagos lithosphere (i.e., >14–164 Ma) formed and were stored at sublithospheric depths for extended periods of time. In order to explain these observations, we performed 2D and 3D thermo-mechanical numerical experiments of plume-lithosphere interaction which show that dynamic plume activity gives rise to complex asthenospheric flow patterns and results in distinct long-lasting mantle domains beneath a moving lithosphere. This demonstrates that it is physically plausible that old plume-derived zircons survive at asthenospheric depths below ocean islands.
publishDate 2022
dc.date.none.fl_str_mv 2022
2024
2024
2024
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/10261/359472
url http://hdl.handle.net/10261/359472
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/MICINN//PID2019‐105625RB‐C21
http://dx.doi.org/10.1029/2022GC010485
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Wiley-VCH
American Geophysical Union
publisher.none.fl_str_mv Wiley-VCH
American Geophysical Union
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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