橄榄石中的铁镁互扩散及其对上地幔化学不均一性的影响

Key Points

• Fe-Mg diffusion coefficient shows significant variation influenced by iron content changes.
• The diffusion was measured under high-pressure and high-temperature conditions, specifically at 6 GPa and 1373–1673 K.
• Data analysis was performed using the Boltzmann-Matano method and confirmed by the Arrhenius equation model.
• Results indicate solid-state Fe-Mg diffusion is limited over geological timescales, affecting mantle geochemical homogeneity.