GRANITOID MASSIVES OF THE TRANSITION ZONE OF OXIDATION-REDUCTION CONDITIONS (SIKHOTE-ALIN OROGENIC BELT)

E.A. Konovalova, L.F. Mishin, Yu.V. Taltykin

Аннотация


Redox conditions for the formation of igneous rocks determine the valence of variable valence elements. The ore mineral composition and amount, the magnetic fraction weight and the magnetic susceptibility of the rock and the composition of the dark-colored minerals depend on the ratio of Fe3+ and Fe2+. It is for the first time for more than 50 years of the redox conditions study that the he authors obtained detailed data on granitoid massifs located in the zone of redox conditions transition.


Ключевые слова


redox background; Sikhote-Alin orogenic belt; magnetite series; ilmenite series; granitoid.

Литература


Mishin L.F., Konovalova E.A., Taltykin Yu.V., Krutikova V.O., Dobkin S.N., Yurchenko Yu.Yu., Shtareva A.V. Redox conditions and related geochemical and metallogenic zonation of igneous formations of the Sikhote-Alin orogenic belt. Tikhookeanskaya geologiya, 2020, vol. 39, no. 3, pp. 51–67. DOI: 10.30911/0207-4028-2020-39-3-51-67. (In Russ.).

Romanovskii N.P. Petrofizika granitoidnykh rudno-magmaticheskikh sistem Tikhookeanskogo poyasa (Petrophysics of granitoid ore-magmatic systems of the Pacific Belt). Moscow: Nauka Publ., 1987. 192p. (In Russ.).

Gastil G. The boundary between the magnetic-series and ilmenite-series granitic rocks in Peninsular California, in Recent advances in concepts concerning zoned plutons in Japan and Southern and Baja California. Tokyo, 1990, pp. 91–100.


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