Evolution of granite formation in the tectonomorphic cycles of the early Precambrian (According to results of structural-petrological and thermobarogeochemical studies)

Materials are presented on all known examples of tectonic-metamorphic cycles in the early Precambrian, investigated via detailed structural-petrological studies of granite-forming processes. These materials are systematized into a general scheme showing the sequence of manifestations of the magmatite and granite formation. Using thermobarogeochemical methods, some regularities are noted in the compositions of granitoids and in the migration of foci of granite formation in the development of these foci.