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Metasomatic oxidation of subduction zone mantle: Implication for arc metallogeny
thesisposted on 20.03.2018, 00:18 authored by ANDREA RIELLI
This thesis investigates redox processes taking place during metasomatic alteration of the Earth’s mantle by slab fluids, and the subsequent partial melting of metasomatised mantle, by applying different geochemical and petrological techniques to orogenic garnet peridotites from the Western Gneiss Region of Norway and peridotite xenoliths from Lake Bullen Merri (Victoria, Australia). The results are used to investigate the genesis of oxidised magmas at convergent margins and the relationship between metasomatism, oxidation and genesis of arc-related ore deposits.