CONDITIONS OF MEIMECHITE MAGMAS FORMATION (POLAR SIBERIA) BASED ON THE GEOCHEMICAL DATA

New data obtained on petrogenic and REE elements distributions in the rocks of meimechite series (Polar Siberia). Comagmatic nature of meime chites, alkaline picrites, and khatangites has been shown. Composition of primitive melts of meimechite series have been estimated. Supposit ion has been made that the primary meimechite magmas were formed durin g melting of lithospheric harzburgites enriched in incompatible elemen ts due to infiltration of diapiric melts of low grade of partial melti ng.