The effect of alumina on phase transformations at the 660-kilometer discontinuity from Fe-Mg partitioning experiments
Experimental data on the partitioning of Fe and Mg between coexisting silicate perovskite, magnesiowustite, and γ-(Mg,Fe)2SiO4 demonstrate that Fe substitution in perovskite is strongly coupled to Al2O3 concentration. In Al2O3-free compositions, perovskite has a low Fe/(Fe+Mg) ratio: for a bulk Fe/(...
| Main Authors: | , |
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| Format: | Journal article |
| Language: | English |
| Published: |
1996
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