Two-Phase Mechanism of the Formation of Platinum-Metal Basites of the Fedorova Tundra Intrusion on the Kola Peninsula: New Data on Geology and Isotope Geochronology

摘要

This report contains the results of the authors" studies on geology and isotope geochronology, which allowed them to formulate the thesis of a two-phase mechanism of the formation of rock associations in the Fedorova Tundra massif. During the former phase (2526-2507 My), a laminated series of the massif was formed, with shows of platinum-metal mineralization of reef type. During the later phase (2493-2485 My), a taxitic zone of the massif appeared, with a highly developed basal platinum-metal mineralization.