• Study reveals low-degree melt metasomatic origin of heavy Fe isotope enrichment in mid-ocean ridge basalt mantle

    2 days ago - By Phys.org

    Studies of mid-ocean ridge basalts show a variable Fe isotope composition of the oceanic upper mantle, beyond explanation by processes of mantle melting from a uniform source and magma evolution, indicating Fe isotope heterogeneity in the oceanic upper mantle. However, the origin of upper mantle Fe isotope heterogeneity remains enigmatic.
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