The oxidation state of the Earth's mantle during formation remains an unresolved question, whether it was constant throughout planetary accretion, transitioned from reduced to oxidized, or from oxidized to reduced. We investigate the stability of Fe3(+) at depth, in order to constrain processes (water, late accretion, dissociation of FeO) which may reduce or oxidize the Earth's mantle. In our previous experiments on shergottite compositions, variable fO2, T, and P less than 4 GPa, Fe3(+)/sigma Fe decreased slightly with increasing P, similar to terrestrial basalt. For oxidizing experiments less than 7GPa, Fe3(+)/sigma Fe decreased as well, but it's unclear from previous modelling whether the deeper mantle could retain significant Fe3(+). Ou...
In subduction environments the fluid phases released by the subducting plates are vehicles for the s...
The oxygenation of Earth’s atmosphere 2.43 billion years ago (Ga) in the ‘Great Oxidation Event’ (GO...
The oxygen fugacity of the upper mantle is 3–4 orders of magnitude higher than that of the lower man...
The oxidation state of the Earth's mantle during formation remains an unresolved question, whether i...
It is widely known that the oxidation state of the mantle strongly influence phase relations, fluids...
The uppermost mantle as sampled by xenoliths, peridotite massifs and primitive basaltic melts appear...
Theoretical and planetary studies show that the Earth’s upper mantle is more oxidised than it should...
Theoretical and planetary studies show that the Earth's upper mantle is more oxidised than it should...
The oxygen fugacity (f)(O2) of the Earth's mantle is one of the fundamental variables in mantle petr...
International audienceA study of cerium in zircon minerals has allowed an assessment of the redox co...
Spinel peridotites from a variety of island arcs have been utilised to calculate the redox state of ...
Samples of olivine, wadsleyite, ringwoodite and majorite with Mg/(Mg + Fe) = 0.85–0.90 were synthes...
The uppermost mantle as sampled by xenoliths, peridotite massifs and primitive basaltic melts appear...
The distribution of volatile elements between Earth's core, mantle, and atmosphere over the last 4.5...
Recent studies have revealed that Earth's deep mantle may have a wider range of oxygen fugacities th...
In subduction environments the fluid phases released by the subducting plates are vehicles for the s...
The oxygenation of Earth’s atmosphere 2.43 billion years ago (Ga) in the ‘Great Oxidation Event’ (GO...
The oxygen fugacity of the upper mantle is 3–4 orders of magnitude higher than that of the lower man...
The oxidation state of the Earth's mantle during formation remains an unresolved question, whether i...
It is widely known that the oxidation state of the mantle strongly influence phase relations, fluids...
The uppermost mantle as sampled by xenoliths, peridotite massifs and primitive basaltic melts appear...
Theoretical and planetary studies show that the Earth’s upper mantle is more oxidised than it should...
Theoretical and planetary studies show that the Earth's upper mantle is more oxidised than it should...
The oxygen fugacity (f)(O2) of the Earth's mantle is one of the fundamental variables in mantle petr...
International audienceA study of cerium in zircon minerals has allowed an assessment of the redox co...
Spinel peridotites from a variety of island arcs have been utilised to calculate the redox state of ...
Samples of olivine, wadsleyite, ringwoodite and majorite with Mg/(Mg + Fe) = 0.85–0.90 were synthes...
The uppermost mantle as sampled by xenoliths, peridotite massifs and primitive basaltic melts appear...
The distribution of volatile elements between Earth's core, mantle, and atmosphere over the last 4.5...
Recent studies have revealed that Earth's deep mantle may have a wider range of oxygen fugacities th...
In subduction environments the fluid phases released by the subducting plates are vehicles for the s...
The oxygenation of Earth’s atmosphere 2.43 billion years ago (Ga) in the ‘Great Oxidation Event’ (GO...
The oxygen fugacity of the upper mantle is 3–4 orders of magnitude higher than that of the lower man...