The oxidation state of the mantle and the extraction of carbon from Earth’s interior

Vincenzo Stagno, Dickson O. Ojwang, Catherine A. McCammon and Daniel J. Frost ()
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Vincenzo Stagno: Bayerisches Geoinstitut, University of Bayreuth
Dickson O. Ojwang: Bayerisches Geoinstitut, University of Bayreuth
Catherine A. McCammon: Bayerisches Geoinstitut, University of Bayreuth
Daniel J. Frost: Bayerisches Geoinstitut, University of Bayreuth

Nature, 2013, vol. 493, issue 7430, 84-88

Abstract: The oxygen fugacity of the deepest rock samples from Earth’s mantle is found to be more oxidized than previously thought, with the result that carbon in the asthenospheric mantle will be hosted as graphite or diamond but will be oxidized to produce carbonate melt through the reduction of Fe3+ in silicate minerals during upwelling.

Date: 2013
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DOI: 10.1038/nature11679

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