Andrault et al. Large oxygen excess in the

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Andrault et al. Large oxygen excess in the primitive mantle could be the source of the Great Oxygenation Event Andrault et al. (2018) Geochem. Persp. Let. 6, 5-10 doi: 10.7185geochemlet.1801 2018 The Authors Published by the European

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Andrault et al.
Large oxygen excess in the primitive mantle could be the source of the Great Oxygenation Event Andrault et al. (2018) Geochem. Persp. Let. 6, 5-10 | doi: 10.7185/geochemlet.1801 © 2018 The Authors
Published by the European Association of Geochemistry
under Creative Commons License CC BY-NC-ND 4.0 Figure  4 Change in the redox state of the deep mantle. During the Earth's accretion (left), the descending iron droplets equilibrated chemically in a partially molten mantle, which contained a major amount of Bg below the 660 km discontinuity. After loss of the Fe0, the lower mantle was left with a #Fe3+ of ~20 % (Fig. 3a) …<br>