Meimechite-picrite associations in Siberia, Primorye, and Kamchatka (comparative analysis and petrogenesis)

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.