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Redox freezing and melting in the Earth’s deep mantle resulting from carbon–iron redox coupling

Author

Listed:
  • Arno Rohrbach

    (Institut für Geochemie und Petrologie, ETH Zürich, Sonneggstrasse 5, 8092 Zürich, Switzerland)

  • Max W. Schmidt

    (Institut für Geochemie und Petrologie, ETH Zürich, Sonneggstrasse 5, 8092 Zürich, Switzerland)

Abstract

Redox melting runs deep in Earth's mantle Rohrbach and Schmidt present an experimental study that defines how some of the deepest melts in Earth's mantle are generated. They show that carbonatite melts reduce to immobile diamond when recycled at depths greater than about 250 kilometres. They infer that when such carbon-enriched mantle heterogeneities become part of the upwelling mantle, diamond will inevitably react with Fe3+, leading to carbonatite 'redox melting' at depths of around 660 kilometres and 250 kilometres, to form deep-seated melts in Earth's mantle.

Suggested Citation

  • Arno Rohrbach & Max W. Schmidt, 2011. "Redox freezing and melting in the Earth’s deep mantle resulting from carbon–iron redox coupling," Nature, Nature, vol. 472(7342), pages 209-212, April.
    • Handle: RePEc:nat:nature:v:472:y:2011:i:7342:d:10.1038_nature09899
    DOI: 10.1038/nature09899
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    Cited by:

    1. Chunfei Chen & Stephen F. Foley & Svyatoslav S. Shcheka & Yongsheng Liu, 2024. "Copper isotopes track the Neoproterozoic oxidation of cratonic mantle roots," Nature Communications, Nature, vol. 15(1), pages 1-11, December.
    2. Yanzhang Li & Hongyu Wang & Yan Li & Huan Ye & Yanan Zhang & Rongzhang Yin & Haoning Jia & Bingxu Hou & Changqiu Wang & Hongrui Ding & Xiangzhi Bai & Anhuai Lu, 2023. "Electron transfer rules of minerals under pressure informed by machine learning," Nature Communications, Nature, vol. 14(1), pages 1-10, December.

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