gtcrustГеодинамика и тектонофизикаGeodynamics & Tectonophysics2078-502XInstitute of the Earth's crust of the Russian Academy of Sciences, Siberian Branch10.5800/GT-2025-16-2-0814GISVEGgtcrust-1835Research ArticleПАЛЕОГЕОДИНАМИКАPALEOGEODYNAMICSНОВЫЕ ДАННЫЕ О ВОЗРАСТЕ И ВЕЩЕСТВЕННОМ СОСТАВЕ ОФИОЛИТОВ КАБАК-ТАЙГИНСКОГО МАССИВА (ГОРНЫЙ АЛТАЙ)NEW DATA ON THE AGE AND COMPOSITION OF OPHIOLITES FROM THE KABAK-TAIGA MASSIF (GORNY ALTAI)ЗиндобрыйВ. Д.ZindobryiV. D.

630090, Новосибирск, пр-т Академика Коптюга, 3

3 Academician Koptyug Ave, Novosibirsk 630090

viktor_zindobryi@mail.ruhttps://orcid.org/0000-0003-0606-2264БусловМ. М.BuslovM. M.

630090, Новосибирск, пр-т Академика Коптюга, 3

3 Academician Koptyug Ave, Novosibirsk 630090

misha@igm.nsc.ruКотляровА. В.KotlyarovA. V.

630090, Новосибирск, пр-т Академика Коптюга, 3

3 Academician Koptyug Ave, Novosibirsk 630090

Институт геологии и минералогии им. В.С. Соболева СО РАНРоссияSobolev Institute of Geology and Mineralogy, Siberian Branch of the Russian Academy of SciencesRussian Federation202521042025162814814Copyright © Зиндобрый В.Д., Буслов М.М., Котляров А.В., 20252025Зиндобрый В.Д., Буслов М.М., Котляров А.В.Zindobryi V.D., Buslov M.M., Kotlyarov A.V.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/1835

Совокупность полученных новых геологических, петрологических и геохронологических данных по породам Кабак-Тайгинского офиолитового массива Горного Алтая и опубликованных материалов по аналогичным характеристикам офиолитов Тувы позволяет сделать вывод о заложении в венде – среднем кембрии в тылу Таннуольской островной дуги задугового бассейна. Продолжительность его формирования оценивается около 70 млн лет. Фрагменты задугового бассейна приурочены к среднепалеозойской Чарышско-Теректинско-Улаганско-Саянской сутурно-сдвиговой зоне, сформированной в результате субдукции океанической коры задугового бассейна под венд-кембрийскую Таннуольскую островную дугу Палеоазиатского океана.

The combination of newly obtained geological, petrological and geochronological data on the rocks from the Kabak-Taiga ophiolite massif of the Gorny Altai and already published materials on similar characteristics of the ophiolites from Tuva allows us to conclude that an initial back-arc basin at the rear of the Tannuol island arc dates back to the Vendian – Middle Cambrian. Its formation lasted for about 70 million years. The fragments of the back-arc basin are confined to the Middle Paleozoic Charysh-Terekta-Ulagan-Sayan suture-shear zone, formed as a result of the subduction of the oceanic crust of the back-arc basin beneath the Vendian-Cambrian Tannuola island arc of the Paleoasian Ocean.

Алтае-Саянская складчатая областьтектоникагеодинамикаофиолитызадуговые бассейныгеохимиягеохронологияAltai-Sayan folded areatectonicsgeodynamicsophiolitesback-arc basinsgeochemistrygeochronologyИсследование проведено при поддержке РНФ (грант № 22-17-00038; петрология) и в рамках госзадания ИГМ СО РАН (проект № 122041400057-2; геология). В работе задействовалось оборудование ЦКП Многоэлементных и изотопных исследований СО РАН (ИГМ СО РАН). Авторы выражают искреннюю признательность рецензентам и редакции журнала за их кропотливый труд и подачу правильного вектора в подготовке данной рукописи.The study was supported by the RSF (grant No. 22-17-00038; petrology) and on the state assignment of the IGM SB RAS (project No. 122041400057-2; geology). The work was conducted using equipment of the Analytical Center for Multi-Elemental and Isotope Research SB RAS (IGM SB RAS).ReferencesБерзин Н.А., Кунгурцев Л.В. 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The authors declare that there are no conflicts of interest present.