Abstract

Analysis of petrochemical and geochemical information on rocks and primary melt inclusions from olivines of meimechite–picrite associations of different ages in Siberia (Maimecha–Kotui province), Primorye (Sikhote-Alin), and Kamchatka was made. It showed that the rocks, despite their similar appearance and identical structural patterns, differ considerably in the contents and distribution of incompatible and rare-earth elements and in the composition and evolution trends of parental high-temperature highly magnesian melts.

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