Non-Subduction Petrological Mechanisms for the Growth of the Neoarcheam Continental Crust of the Kola–Norwegian Terrane, Fennoscandian Shield: Geological and Isotope-Geochemical Evidence

Abstract

The paper reports new data on the composition and age of the Neoarchean calc-alkaline volcanic rocks of the Uraguba–Kolmozero–Voron’ya greenstone belt (UKV GB). Petrological-geochemical modeling indicates a polygenetic origin of primary melts of the basalt–andesite–dacite association and non-subduction geodynamic mechanisms for the crustal growth in the largest greenstone belt of the Kola–Norwegian Block of the Fennoscandian shield.