IDEAS home Printed from https://ideas.repec.org/a/nat/natcom/v9y2018i1d10.1038_s41467-018-05804-2.html
   My bibliography  Save this article

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

Author

Listed:
  • Antoine Bénard

    (The Australian National University
    Monash University
    Institute of Earth Sciences, Géopolis)

  • Kevin Klimm

    (Goethe Universität Frankfurt)

  • Alan B. Woodland

    (Goethe Universität Frankfurt)

  • Richard J. Arculus

    (The Australian National University)

  • Max Wilke

    (Universität Potsdam)

  • Roman E. Botcharnikov

    (Leibniz Universität Hannover
    Gutenberg Universität Mainz)

  • Nobumichi Shimizu

    (Woods Hole Oceanographic Institution)

  • Oliver Nebel

    (Monash University)

  • Camille Rivard

    (European Synchrotron Radiation Facility)

  • Dmitri A. Ionov

    (Université de Montpellier and UMR-CNRS 5243)

Abstract

Subduction 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+/∑Fe 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.

Suggested Citation

  • Antoine Bénard & Kevin Klimm & Alan B. Woodland & Richard J. Arculus & Max Wilke & Roman E. Botcharnikov & Nobumichi Shimizu & Oliver Nebel & Camille Rivard & Dmitri A. Ionov, 2018. "Oxidising agents in sub-arc mantle melts link slab devolatilisation and arc magmas," Nature Communications, Nature, vol. 9(1), pages 1-10, December.
    • Handle: RePEc:nat:natcom:v:9:y:2018:i:1:d:10.1038_s41467-018-05804-2
    DOI: 10.1038/s41467-018-05804-2
    as

    Download full text from publisher

    File URL: https://www.nature.com/articles/s41467-018-05804-2
    File Function: Abstract
    Download Restriction: no
    File URL: https://libkey.io/10.1038/s41467-018-05804-2?utm_source=ideas
    LibKey link: if access is restricted and if your library uses this service, LibKey will redirect you to where you can use your library subscription to access this item
    ---><---

    Citations

    Citations are extracted by the CitEc Project, subscribe to its RSS feed for this item.
    as


    Cited by:

    1. Carter Grondahl & Zoltán Zajacz, 2022. "Sulfur and chlorine budgets control the ore fertility of arc magmas," Nature Communications, Nature, vol. 13(1), pages 1-11, December.

    More about this item

    Statistics

    Access and download statistics

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:nat:natcom:v:9:y:2018:i:1:d:10.1038_s41467-018-05804-2. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    We have no bibliographic references for this item. You can help adding them by using this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: Sonal Shukla or Springer Nature Abstracting and Indexing (email available below). General contact details of provider: http://www.nature.com .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.