Influence of oxygen fugacity on iron disproportionation in planetary magma oceans

ESRF Portal2028-01-01 更新2026-04-23 收录

行星岩浆海洋

高压地球化学

数据链接：

https://doi.esrf.fr/10.15151/ESRF-ES-2227849157 数据链接链接失效反馈

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资源简介：

The redox state established in deep magma oceans exerts a pronounced influence on planetary differentiation, including the formation of distinct geochemical domains and early atmospheres on Earth and other rocky planets [1]. The estimated mean pressure (P) of silicate-alloy equilibria in Earth’s magma ocean ranges up to more than 60 GPa [2], and it may be considerably greater in super-Earth exoplanets. Experimental constraints on the iron (Fe) redox speciation applicable to magma oceans are currently limited to below 28 GPa and a narrow range of composition variation. This results in conflicting predictions regarding the stabilization of oxidized species in deep magma oceans [3-6]. This study builds upon ES-1591 “Disproportion and spin crossover of iron in planetary magma oceans” and aims to examine the influence of oxygen fugacity (fO2) on Fe disproportionation reactions and spin crossovers in deep magma oceans up to 80 GPa during early evolution of rocky planets.

提供机构：

University of Minnesota, Experimental Petrology, Dept. of Earth Science John T. Tate Hall, Ro, Om 150 116 Church Street Se, Mn 55455 Minneapolis, Usa; University of Michigan, Department of Earth and Environmental Science, 1100 North University Ave, 48109, Ann arbor, US; HPSTAR, HPSTAR, 1690 Cailun Rd, Bldg #6 Pudong, 201203, Shanghai, CHINA; University of Hawaii at Manoa, HIGP-SOEST, 2525 Correa Road HI, 96822-2219, Honolulu, USA; University of Michigan, Department of Earth and Environmental Science, 1100 North University Ave, 48109, Ann arbor, USA; China University of Geosciences, School of the Earth Sciences and Resources, 312 building 2, No.29 Xueyuan Road, Haidian Distrct Beijing, 100083, Beijing, CHINA; University College London, Department of Earth Sciences, Gower Street, Bloomsbury, Wc1e 6bt London, United Kingdom

创建时间：

2028-01-01