gtcrustГеодинамика и тектонофизикаGeodynamics & Tectonophysics2078-502XInstitute of the Earth's crust of the Russian Academy of Sciences, Siberian Branch10.5800/GT-2020-11-4-0499gtcrust-1117Research ArticleПАЛЕОГЕОДИНАМИКАPALEOGEODYNAMICSПЕРВЫЕ 40Ar/39Ar ГЕОХРОНОЛОГИЧЕСКИЕ ДАННЫЕ ДЛЯ РУДНЫХ МЕТАСОМАТИТОВ ЗОЛОТОРУДНОГО МЕСТОРОЖДЕНИЯ УНГЛИЧИКАН (ВОСТОЧНАЯ ЧАСТЬ МОНГОЛО-ОХОТСКОГО СКЛАДЧАТОГО ПОЯСА)THE FIRST 40Ar/39Ar GEOCHRONOLOGICAL DATA FOR ORE METASOMATITES OF THE UNGLICHIKAN GOLD DEPOSIT, EASTERN PART OF THE MONGOL-OKHOTSK FOLD BELThttps://orcid.org/0000-0001-7524-637XКадашниковаА. Ю.KadashnikovaA. Yu.

675000, Благовещенск, пер. Релочный, 1

1 Relochniy Ln, Blagoveshchensk 675000

akadashnikova@gmail.comhttps://orcid.org/0000-0002-8879-5412СорокинА. А.SorokinA. A.

675000, Благовещенск, пер. Релочный, 1

1 Relochniy Ln, Blagoveshchensk 675000

https://orcid.org/0000-0002-9714-0928ПономарчукА. В.PonomarchukA. V.

630090, Новосибирск, пр-т Академика Коптюга, 3

3 Academician Koptyug Ave, Novosibirsk 630090

https://orcid.org/0000-0002-5640-4560ТравинА. В.TravinA. V.

630090, Новосибирск, пр-т Академика Коптюга, 3

3 Academician Koptyug Ave, Novosibirsk 630090

https://orcid.org/0000-0003-2264-0634ПономарчукВ. А.PonomarchukV. A.

630090, Новосибирск, пр-т Академика Коптюга, 3

3 Academician Koptyug Ave, Novosibirsk 630090

Институт геологии и природопользования ДВО РАНРоссияInstitute of Geology and Nature Management, Far Eastern Branch of the Russian Academy of SciencesRussian FederationИнститут геологии и минералогии имени В.С. Соболева СО РАНРоссияSobolev Institute of Geology and Mineralogy, Siberian Branch of the Russian Academy of SciencesRussian Federation202014122020114672677Copyright © Кадашникова А.Ю., Сорокин А.А., Пономарчук А.В., Травин А.В., Пономарчук В.А., 20202020Кадашникова А.Ю., Сорокин А.А., Пономарчук А.В., Травин А.В., Пономарчук В.А.Kadashnikova A.Y., Sorokin A.A., Ponomarchuk A.V., Travin A.V., Ponomarchuk V.A.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://www.gt-crust.ru/jour/article/view/1117

В результате проведенных изотопно-геохронологических исследований установлено, что возраст рудных метасоматитов золоторудного месторождения Унгличикан может быть оценен в 140–136 млн лет. Отсутствие магматизма этого возраста в пределах рассматриваемого региона не позволяет связать рудную минерализацию месторождения Унгличикан с магматическими процессами. По мнению авторов, значимую роль в мобилизации, перераспределении рудного вещества и образовании месторождения Унгличикан сыграли дислокационные процессы, сопровождаемые гидротермальной деятельностью, связанные с заключительными этапами формирования орогенных структур Монголо-Охотского пояса.

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.

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The authors declare that there are no conflicts of interest present.