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Oxidising agents in sub-arc mantle melts link slab devolatilisation and arc magmas

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dc.contributor.authorBenard, Antoine
dc.contributor.authorKlimm, Kevin
dc.contributor.authorWoodland, A. B.
dc.contributor.authorArculus, Richard
dc.contributor.authorWilke, Max
dc.contributor.authorBotcharnikov, Roman
dc.contributor.authorShimizu, Nobumichi
dc.contributor.authorNebel, Oliver
dc.contributor.authorRivard, C.
dc.contributor.authorIonov, Dmitri A.
dc.date.accessioned2020-04-14T04:29:04Z
dc.date.available2020-04-14T04:29:04Z
dc.date.issued2018-08-29
dc.date.updated2019-11-25T07:52:09Z
dc.description.abstractSubduction zone magmas are more oxidised on eruption than those at mid-ocean ridges. This is attributed either to oxidising components, derived from subducted lithosphere (slab) and added to the mantle wedge, or to oxidation processes occurring during magma ascent via differentiation. Here we provide direct evidence for contributions of oxidising slab agents to melts trapped in the sub-arc mantle. Measurements of sulfur (S) valence state in sub-arc mantle peridotites identify sulfate, both as crystalline anhydrite (CaSO4) and dissolved SO42− in spinel-hosted glass (formerly melt) inclusions. Copper-rich sulfide precipitates in the inclusions and increased Fe3+/ΣFe in spinel record a S6+–Fe2+ redox coupling during melt percolation through the sub-arc mantle. Sulfate-rich glass inclusions exhibit high U/Th, Pb/Ce, Sr/Nd and δ34S (+ 7 to + 11‰), indicating the involvement of dehydration products of serpentinised slab rocks in their parental melt sources. These observations provide a link between liberated slab components and oxidised arc magmas.en_AU
dc.description.sponsorshipWe acknowledge financial support by the Australian Research Council (DE120100513 and DP120104240) and the ESRF for beam time (EC1061 and ES238).en_AU
dc.format.extent10 pagesen_AU
dc.format.mimetypeapplication/pdfen_AU
dc.identifier.urihttp://hdl.handle.net/1885/202924
dc.language.isoen_AUen_AU
dc.publisherMacmillan Publishers Ltden_AU
dc.relationhttp://purl.org/au-research/grants/arc/DE120100513en_AU
dc.relationhttp://purl.org/au-research/grants/arc/DP120104240en_AU
dc.rights© The Author(s) 2018en_AU
dc.rights.licenseThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/ licenses/by/4.0/.en_AU
dc.rights.urihttp://creativecommons.org/ licenses/by/4.0/.en_AU
dc.sourceNature Communicationsen_AU
dc.titleOxidising agents in sub-arc mantle melts link slab devolatilisation and arc magmasen_AU
dc.typeJournal articleen_AU
dcterms.accessRightsOpen Accessen_AU
dcterms.dateAccepted2018-07-24
local.bibliographicCitation.startpage3500en_AU
local.contributor.affiliationBenard, Antoine, College of Science, The Australian National Universityen_AU
local.contributor.affiliationKlimm, Kevin, Goethe Universitat Frankfurten_AU
local.contributor.affiliationWoodland, A.B., Goethe Universitäten_AU
local.contributor.affiliationArculus, Richard, College of Science, The Australian National Universityen_AU
local.contributor.affiliationWilke, Max, Universitat Potsdamen_AU
local.contributor.affiliationBotcharnikov, Roman, Leibniz Universitat Hannoveren_AU
local.contributor.affiliationShimizu, Nobumichi , Woods Hole Oceanographic Institutionen_AU
local.contributor.affiliationNebel, Oliver, Monash Universityen_AU
local.contributor.affiliationRivard, C., European Synchrotron Radiation Facilityen_AU
local.contributor.affiliationIonov, Dmitri A., Universite Montpellieren_AU
local.contributor.authoruidBenard, Antoine, u5263619en_AU
local.contributor.authoruidArculus, Richard, u9401389en_AU
local.description.notesImported from ARIESen_AU
local.identifier.absfor040304 - Igneous and Metamorphic Petrologyen_AU
local.identifier.absfor040202 - Inorganic Geochemistryen_AU
local.identifier.absseo970104 - Expanding Knowledge in the Earth Sciencesen_AU
local.identifier.ariespublicationu4485658xPUB1708en_AU
local.identifier.citationvolume9en_AU
local.identifier.doi10.1038/s41467-018-05804-2en_AU
local.identifier.essn2041-1723en_AU
local.identifier.scopusID2-s2.0-85052674096
local.identifier.thomsonID000442998800005
local.publisher.urlhttps://www.nature.com/en_AU
local.type.statusPublished Versionen_AU

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