Oxidation of La Réunion lavas with MORB-like fO2 by assimilation
نویسندگان
چکیده
منابع مشابه
Geochemistry of Lavas from Mauritius, Indian Ocean: Mantle Sources and Petrogenesis
Trace-element and Nd-Sr-Pb isotopic data for mafic lavas from the Mascarene island of Mauritius reveal that the shield-stage Older Series (with 143Nd/144Nd = 0.512827 to 0.512853, 87Sr/86Sr = 0.70412 to 0.70433, and 206Pb/204Pb = 18.771 to 19.024) is geochemically very similar to the shield-building lavas of the younger island of Réunion. The post-shield Intermediate and Younger Series lavas of...
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V/Sc systematics in peridotites, mid-ocean ridge basalts and arc basalts are investigated to constrain the variation of fO2 in the asthenospheric mantle. V/Sc ratios are used here to ‘ see through’ those processes that can modify barometric fO2 determinations in mantle rocks and/or magmas: early fractional crystallization, degassing, crustal assimilation and mantle metasomatism. Melting models ...
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ژورنال
عنوان ژورنال: Geochemical perspectives letters
سال: 2022
ISSN: ['2410-339X', '2410-3403']
DOI: https://doi.org/10.7185/geochemlet.2205