IDEAS home Printed from https://ideas.repec.org/a/nat/natcom/v8y2017i1d10.1038_ncomms15960.html
   My bibliography  Save this article

Stability of iron-bearing carbonates in the deep Earth’s interior

Author

Listed:
  • Valerio Cerantola

    (European Synchrotron Radiation Facility
    Bayerisches Geoinstitut, Universität Bayreuth)

  • Elena Bykova

    (Bayerisches Geoinstitut, Universität Bayreuth
    P02.2 Extreme Conditions Beamline, Deutsches Elektronen-Synchrotron)

  • Ilya Kupenko

    (European Synchrotron Radiation Facility
    Present address: Institut für Mineralogie, Universität Münster, Corrensstraße 24, D-48149 Münster, Germany)

  • Marco Merlini

    (Università degli Studi di Milano)

  • Leyla Ismailova

    (Skolkovo Institute of Science and Technology, Center for Hydrocarbon recovery)

  • Catherine McCammon

    (Bayerisches Geoinstitut, Universität Bayreuth)

  • Maxim Bykov

    (Bayerisches Geoinstitut, Universität Bayreuth
    Material Modeling and Development Laboratory, National University of Science and Technology MSIS)

  • Alexandr I. Chumakov

    (European Synchrotron Radiation Facility)

  • Sylvain Petitgirard

    (Bayerisches Geoinstitut, Universität Bayreuth)

  • Innokenty Kantor

    (European Synchrotron Radiation Facility
    Present address: MAX IV Laboratory, Fotongatan 2, 225 94 Lund, Sweden)

  • Volodymyr Svitlyk

    (European Synchrotron Radiation Facility)

  • Jeroen Jacobs

    (European Synchrotron Radiation Facility)

  • Michael Hanfland

    (European Synchrotron Radiation Facility)

  • Mohamed Mezouar

    (European Synchrotron Radiation Facility)

  • Clemens Prescher

    (Institute of Geology and Mineralogy, Universität zu Köln)

  • Rudolf Rüffer

    (European Synchrotron Radiation Facility)

  • Vitali B. Prakapenka

    (GSECARS, Center for Advanced Radiation Sources, University of Chicago)

  • Leonid Dubrovinsky

    (Bayerisches Geoinstitut, Universität Bayreuth)

Abstract

The presence of carbonates in inclusions in diamonds coming from depths exceeding 670 km are obvious evidence that carbonates exist in the Earth’s lower mantle. However, their range of stability, crystal structures and the thermodynamic conditions of the decarbonation processes remain poorly constrained. Here we investigate the behaviour of pure iron carbonate at pressures over 100 GPa and temperatures over 2,500 K using single-crystal X-ray diffraction and Mössbauer spectroscopy in laser-heated diamond anvil cells. On heating to temperatures of the Earth’s geotherm at pressures to ∼50 GPa FeCO3 partially dissociates to form various iron oxides. At higher pressures FeCO3 forms two new structures—tetrairon(III) orthocarbonate Fe43+C3O12, and diiron(II) diiron(III) tetracarbonate Fe22+Fe23+C4O13, both phases containing CO4 tetrahedra. Fe4C4O13 is stable at conditions along the entire geotherm to depths of at least 2,500 km, thus demonstrating that self-oxidation-reduction reactions can preserve carbonates in the Earth’s lower mantle.

Suggested Citation

  • Valerio Cerantola & Elena Bykova & Ilya Kupenko & Marco Merlini & Leyla Ismailova & Catherine McCammon & Maxim Bykov & Alexandr I. Chumakov & Sylvain Petitgirard & Innokenty Kantor & Volodymyr Svitlyk, 2017. "Stability of iron-bearing carbonates in the deep Earth’s interior," Nature Communications, Nature, vol. 8(1), pages 1-9, December.
    • Handle: RePEc:nat:natcom:v:8:y:2017:i:1:d:10.1038_ncomms15960
    DOI: 10.1038/ncomms15960
    as

    Download full text from publisher

    File URL: https://www.nature.com/articles/ncomms15960
    File Function: Abstract
    Download Restriction: no
    File URL: https://libkey.io/10.1038/ncomms15960?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. Ekaterina S. Kiseeva & Nester Korolev & Iuliia Koemets & Dmitry A. Zedgenizov & Richard Unitt & Catherine McCammon & Alena Aslandukova & Saiana Khandarkhaeva & Timofey Fedotenko & Konstantin Glazyrin , 2022. "Subduction-related oxidation of the sublithospheric mantle evidenced by ferropericlase and magnesiowüstite diamond inclusions," Nature Communications, Nature, vol. 13(1), pages 1-8, 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:8:y:2017:i:1:d:10.1038_ncomms15960. 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.