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The Norfolk Ridge: A Proximal Record of the Tonga‐Kermadec Subduction Initiation

dc.rights.licenseopenen_US
hal.structure.identifierDIMENC/SGNC [SGNC]
dc.contributor.authorCOLLOT, J
hal.structure.identifierVictoria University of Wellington
dc.contributor.authorSUTHERLAND, R
hal.structure.identifierEnvironnements et Paléoenvironnements OCéaniques [EPOC]
dc.contributor.authorETIENNE, Samuel
hal.structure.identifierGeo-Ocean [GEO-OCEAN]
dc.contributor.authorPATRIAT, M
hal.structure.identifierGeo-Ocean [GEO-OCEAN]
dc.contributor.authorROEST, W
hal.structure.identifierObservatoire de la Côte d'Azur
dc.contributor.authorMARCAILLOU, B.
hal.structure.identifierEnvironnement Méditerranéen et Modélisation des Agro-Hydrosystèmes [EMMAH]
dc.contributor.authorCLERC, C
hal.structure.identifierGNS Science [Lower Hutt]
dc.contributor.authorSTRATFORD, W
hal.structure.identifierGNS Science [Lower Hutt]
dc.contributor.authorMORTIMER, N
hal.structure.identifierDIMENC/SGNC [SGNC]
dc.contributor.authorJUAN, C
hal.structure.identifierDIMENC/SGNC [SGNC]
dc.contributor.authorBORDENAVE, Aurélien
hal.structure.identifierGeo-Ocean [GEO-OCEAN]
dc.contributor.authorSCHNURLE, P
hal.structure.identifierGNS Science [Lower Hutt]
dc.contributor.authorBARKER, D
hal.structure.identifierState Key Laboratory of Continental Dynamics, Department of Geology
dc.contributor.authorWILLIAMS, S
hal.structure.identifierInstitut des Sciences de la Terre de Paris [iSTeP]
dc.contributor.authorWOLF, Sylvie
hal.structure.identifierGNS Science [Lower Hutt]
dc.contributor.authorCRUNDWELL, M
dc.date.accessioned2024-03-07T09:00:53Z
dc.date.available2024-03-07T09:00:53Z
dc.date.issued2023-03
dc.identifier.issn1525-2027en_US
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/188613
dc.description.abstractEnNorfolk Ridge bounds the northeastern edge of the continent of Zealandia and is proximal to where Cenozoic Tonga-Kermadec subduction initiation occurred. We present and analyze new seismic reflection, bathymetric and rock data from Norfolk Ridge that show it is composed of a thick sedimentary succession and that it was formed and acquired its present-day ridge physiography and architecture during Eocene to Oligocene uplift, emergence and erosion. Contemporaneous subsidence of the adjacent New Caledonia Trough shaped the western slope of Norfolk Ridge and was accompanied by volcanism. Neogene extension along the eastern slope of Norfolk Ridge led to the opening of the Norfolk Basin. Our observations reveal little or no contractional deformation, in contrast to observations elsewhere in Zealandia, and are hence significant for understanding the mechanics of subduction initiation. We suggest that subduction nucleated north of Norfolk Ridge and propagated rapidly along the ridge during the period 40-35 Ma, giving it a linear and narrow shape. Slab roll-back following subduction initiation may have preserved the ridge and created its eastern flank. Our observations suggest that pre-existing structures, which were likely inherited from Cretaceous Gondwana subduction, were well-oriented to propagate rupture and create self-sustaining subduction.
dc.language.isoENen_US
dc.rights.urihttp://creativecommons.org/licenses/by-nc/
dc.title.enThe Norfolk Ridge: A Proximal Record of the Tonga‐Kermadec Subduction Initiation
dc.typeArticle de revueen_US
dc.identifier.doi10.1029/2022gc010721en_US
dc.subject.halPlanète et Univers [physics]en_US
bordeaux.journalGeochemistry, Geophysics, Geosystemsen_US
bordeaux.page1-23en_US
bordeaux.volume24en_US
bordeaux.hal.laboratoriesEPOC : Environnements et Paléoenvironnements Océaniques et Continentaux - UMR 5805en_US
bordeaux.issue3en_US
bordeaux.institutionUniversité de Bordeauxen_US
bordeaux.institutionCNRSen_US
bordeaux.teamGEOLSEDen_US
bordeaux.peerReviewedouien_US
bordeaux.inpressnonen_US
bordeaux.import.sourcehal
hal.identifierhal-04034635
hal.version1
hal.popularnonen_US
hal.audienceInternationaleen_US
hal.exportfalse
workflow.import.sourcehal
dc.rights.ccCC BY-NCen_US
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Geochemistry,%20Geophysics,%20Geosystems&rft.date=2023-03&rft.volume=24&rft.issue=3&rft.spage=1-23&rft.epage=1-23&rft.eissn=1525-2027&rft.issn=1525-2027&rft.au=COLLOT,%20J&SUTHERLAND,%20R&ETIENNE,%20Samuel&PATRIAT,%20M&ROEST,%20W&rft.genre=article


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