Инд. авторы:	Nozhkin A.D., Likhanov I.I., Bayanova T.B., Serov P.A.
Заглавие:	First data on late vendian granitoid magmatism of the Northwestern Sayan–Yenisei accretionary belt
Библ. ссылка:	Nozhkin A.D., Likhanov I.I., Bayanova T.B., Serov P.A. First data on late vendian granitoid magmatism of the Northwestern Sayan–Yenisei accretionary belt // Geochemistry International. - 2017. - Vol.55. - Iss. 9. - P.792-801. - ISSN 0016-7029. - EISSN 1531-8397.
Внешние системы:	DOI: 10.1134/S0016702917070072; SCOPUS: 2-s2.0-85029174088; WoS: 000410098600003;
Реферат:	eng: Late Vendian (540–550 Ma) U–Pb age was established for zircon from postcollisional granites of the Osinovsky Massif located among island-arc complexes of the Isakovka terrane in the northwestern Sayan–Yenisei accretionary belt. The granites were formed 150 Ma after the formation of the host island-arc complexes and 50–60 Ma after the beginning of their accretion to the Siberian Craton. These events mark the final stage of the Neoproterozoic history of the Yenisei Ridge related to the end of accretion of oceanic fragments and the beginning of the Caledonian Orogeny. The granites are subalkaline leucoractic Na–K rocks enriched in Rb, U, and Th. The petrogeochemical and Sm–Nd isotope data (TNd(DM)-2st = 1490–1650 Ma and εNd(T) from–2.5 to–4.4) indicate that their source was highly differentiated continental crust of the SW margin of the Siberian Craton. Therefore, the host Late Riphean island-arc complexes were thrust over the craton margin for distance significantly exceeding the size of the Osinovsky Massif. © 2017, Pleiades Publishing, Ltd.
Ключевые слова:	leucogranites; magmatic sources; Siberian Craton; U–Pb and Sm–Nd geochronology; Yenisei Ridge; Geochemistry; Granite; Silicate minerals; Tectonics; Accretionary; Continental crusts; Leucogranites; Magmatic sources; Nd isotopes; Neoproterozoic; Vendian; Yenisei Ridge; Siberian Craton; Russian Federation; Krasnoyarsk [Russian Federation]; uranium-lead dating; samarium-neodymium dating; magmatism; leucogranite; igneous geochemistry; granitoid; geochronology; Geochronology; Yenisei Ridge; Siberian Craton; geochemistry;
Издано:	2017
Физ. характеристика:	с.792-801