Auflistung Geochemie, Mineralogie, Petrologie nach Schlagwort "bridgmanite"
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Effect of Fe3+ on Phase Relations in the Lower Mantle: Implications for Redox Melting in Stagnant Slabs
(Journal of Geophysical Research: Solid Earth, 2019)Recent studies have revealed that Earth's deep mantle may have a wider range of oxygen fugacities than previously thought. Such a large heterogeneity might be caused by material subducted into the deep mantle. However, ... -
Oxygen Vacancy Substitution Linked to Ferric Iron in Bridgmanite at 27 GPa
(Geophysical Research Letters, 2020)Ferric iron can be incorporated into the crystal structure of bridgmanite by either oxygen vacancy substitution (MgFeO2.5 component) or charge-coupled substitution (FeFeO3 component) mechanisms. We investigated the ... -
Stability and Solubility of the FeAlO3 Component in Bridgmanite at Uppermost Lower Mantle Conditions
(Journal of Geophysical Research: Solid Earth, 2020)We report the stability and solubility of the FeAlO3 component in bridgmanite based on phase relations in the system MgSiO3-FeAlO3 at 27 GPa and 2000 K using a multi-anvil apparatus combined with in situ synchrotron X-ray ...