Open AccessNon-subduction petrological mechanisms for the growth of the neoarcheam continental crust of the Kola–Norwegian terrane, Fennoscandian shield: geological and isotope-geochemical evidence
Author(s) -
A. B. Vrevskii
Publication year - 2019
Publication title -
petrologiâ
Language(s) - English
Resource type - Journals
ISSN - 0869-5903
DOI - 10.31857/s0869-59032161-186
Subject(s) - geology , geochemistry , terrane , subduction , andesite , baltic shield , volcanic rock , continental crust , basalt , dacite , oceanic crust , crust , adakite , greenstone belt , petrology , earth science , volcano , archean , tectonics , paleontology
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.