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GENESIS OF GRANITOID (GABBRO-GRANITE) PLUTONS AND ASSOCIATED MINERALIZATION

V. L. Khomichev

Siberian Research Institute of Geology, Geophysics and Mineral Resources, Novosibirsk, Russia

Deep geological and geophysical modeling by a large number of granitoid plutons for the first time showed a completely different nature than was commonly believed. As a result, ideas about the connection of mineralization with them have changed dramatically. Many petrological contradictions and puzzles were solved logically and scientifically grounded. The complete and comprehensive review of the problem from the beginning (source of the initial magma) to the end (formation of the granite ore-magmatic system) is given. Three stages of the volatiles and ore matter concentration in the history of the plutons formation were established: the first (planetary) - during the intrachamber differentiation of the initial basalt magma with an isolation of granitoid melting; the second (regional) - during the formation of a residual leukogranite chamber the third, main (local) - during the intrusion of ore-generating apophyses from the chamber.

Keywords: tectonics, magmatism, gabbro-granite pluton, magmatic differentiation, liquation, residual chambers, ore-magmatic system, concentration stages of volatiles and ore matter.

DOI 10.20403/2078-0575-2022-2-78-87

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