Mesozoic age of the Gilyui Metamorphic Complex in the junction zone of the Selenga–Stanovoi and Dzhugdzhur–Stanovoi superterranes, Central Asian fold belt


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The Gilyui Complex includes sedimentary and volcanic rocks metamorphosed to amphibolite and epidote–amphibolite facies, which constitute blocks confined to the main structural sutures of the Dzhugdzhur–Stanovoi superterrane in the Central Asian fold belt. In recent stratigraphic scales, they are considered as being Neoarchean in age with Nd model age values of 1.5–3.0 Ga. The youngest detrital zircons from metamorphosed mudstone of the Gilyui Complex yield a date of 285 ± 4 Ma, which determines the lower age limit for the formation of its protolith. The age of crystallization of rhyolites from the Gilyui Complex is determined to be 231 ± 4 Ma. If the rhyolites form volcanic flow units or sills, the Gilyui Complex is approximately 230 Ma or 231 ± 4 to 285 ± 4 Ma old, respectively.

作者简介

S. Velikoslavinskii

Institute of Precambrian Geology and Geochronology (IGGD RAN)

Email: katesalnikova@yandex.ru
俄罗斯联邦, ul. Makarova 2, St. Petersburg, 199034

A. Kotov

Institute of Precambrian Geology and Geochronology (IGGD RAN)

Email: katesalnikova@yandex.ru
俄罗斯联邦, ul. Makarova 2, St. Petersburg, 199034

V. Kovach

Institute of Precambrian Geology and Geochronology (IGGD RAN)

Email: katesalnikova@yandex.ru
俄罗斯联邦, ul. Makarova 2, St. Petersburg, 199034

A. Larin

Institute of Precambrian Geology and Geochronology (IGGD RAN)

Email: katesalnikova@yandex.ru
俄罗斯联邦, ul. Makarova 2, St. Petersburg, 199034

A. Sorokin

Institute of Geology and Nature Management, Far East Branch

Email: katesalnikova@yandex.ru
俄罗斯联邦, Relochnyi per. 1, Blagoveshchensk, 675000

A. Sorokin

Institute of Geology and Nature Management, Far East Branch

编辑信件的主要联系方式.
Email: katesalnikova@yandex.ru
俄罗斯联邦, Relochnyi per. 1, Blagoveshchensk, 675000

E. Tolmacheva

Institute of Precambrian Geology and Geochronology (IGGD RAN)

Email: katesalnikova@yandex.ru
俄罗斯联邦, ul. Makarova 2, St. Petersburg, 199034

E. Salnikova

Institute of Precambrian Geology and Geochronology (IGGD RAN); St. Petersburg State University

Email: katesalnikova@yandex.ru
俄罗斯联邦, ul. Makarova 2, St. Petersburg, 199034; Universitetskaya nab. 7–9, St. Petersburg, 199034

K. Wang

Institute of Earth Sciences

Email: katesalnikova@yandex.ru
中国, Taipei, Taiwan

B. Jahn

Institute of Earth Sciences

Email: katesalnikova@yandex.ru
中国, Taipei, Taiwan

S. Cung

Department of Geosciences

Email: katesalnikova@yandex.ru
中国, Taipei, Taiwan

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