THE FIRST 40Ar/39Ar GEOCHRONOLOGICAL DATA FOR ORE METASOMATITES OF THE UNGLICHIKAN GOLD DEPOSIT, EASTERN PART OF THE MONGOL-OKHOTSK FOLD BELT
https://doi.org/10.5800/GT-2020-11-4-0499
Abstract
In our isotope-geochronological study, the age of ore metasomatites of the Unglichikan gold deposit is determined at 140–136 Ma. Magmatism of this age is absent in the study area, and it is thus unreasonable to relate the ore mineralization in the Unglichikan deposit to any magmatic process. We conclude that in the mobilization and redistribution of the ore material and the formation of the Unglichikan deposit, a significant role was played by dislocation processes accompanied by hydrothermal activity during the final stages of orogenesis in the Mongol-Okhotsk belt.
Supporting agencies: The isotope-geochronological study was supported by RSF (project 18-17-00002).
About the Authors
A. Yu. Kadashnikova
Institute of Geology and Nature Management, Far Eastern Branch of the Russian Academy of Sciences
Russian Federation
1 Relochniy Ln, Blagoveshchensk 675000
Russian Federation
1 Relochniy Ln, Blagoveshchensk 675000
A. A. Sorokin
Institute of Geology and Nature Management, Far Eastern Branch of the Russian Academy of Sciences
Russian Federation
1 Relochniy Ln, Blagoveshchensk 675000
Russian Federation
1 Relochniy Ln, Blagoveshchensk 675000
A. V. Ponomarchuk
Sobolev Institute of Geology and Mineralogy, Siberian Branch of the Russian Academy of Sciences
Russian Federation
3 Academician Koptyug Ave, Novosibirsk 630090
Russian Federation
3 Academician Koptyug Ave, Novosibirsk 630090
A. V. Travin
Sobolev Institute of Geology and Mineralogy, Siberian Branch of the Russian Academy of Sciences
Russian Federation
3 Academician Koptyug Ave, Novosibirsk 630090
Russian Federation
3 Academician Koptyug Ave, Novosibirsk 630090
V. A. Ponomarchuk
Sobolev Institute of Geology and Mineralogy, Siberian Branch of the Russian Academy of Sciences
Russian Federation
3 Academician Koptyug Ave, Novosibirsk 630090
Russian Federation
3 Academician Koptyug Ave, Novosibirsk 630090
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For citations:
Kadashnikova A.Yu., Sorokin A.A., Ponomarchuk A.V., Travin A.V., Ponomarchuk V.A. THE FIRST 40Ar/39Ar GEOCHRONOLOGICAL DATA FOR ORE METASOMATITES OF THE UNGLICHIKAN GOLD DEPOSIT, EASTERN PART OF THE MONGOL-OKHOTSK FOLD BELT. Geodynamics & Tectonophysics. 2020;11(4):672-677. (In Russ.) https://doi.org/10.5800/GT-2020-11-4-0499
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