Инд. авторы:	Shkolnik S.I., Letnikova E.F., Brusnitsyn A.I., Lepekhina E.N., Ivanov A.V., Perova E.N.
Заглавие:	Age of Ore-Bearing Rocks at Devonian Fe-Mn Deposits, Central Kazakhstan
Библ. ссылка:	Shkolnik S.I., Letnikova E.F., Brusnitsyn A.I., Lepekhina E.N., Ivanov A.V., Perova E.N. Age of Ore-Bearing Rocks at Devonian Fe-Mn Deposits, Central Kazakhstan // Doklady Earth Sciences. - 2021. - Vol.497. - Iss. 1. - P.195-199. - ISSN 1028-334X. - EISSN 1531-8354.
Внешние системы:	DOI: 10.1134/S1028334X21010207; WoS: 000639844000002;
Реферат:	eng: Isotope study of ore-bearing rocks at Fe-Mn rift deposits of the Atasu and Zhezdy (Dzhezdy) ore districts in Central Kazakhstan has been carried out for the first time. The Atasu felsic effusive rocks (Ushkatyn-1 deposit), synchronous to ore genesis, were formed at the boundary between the Frasnian and Famennian (373 +/- 4 Ma). The Zhezdy ore-bearing gravelites began to accumulate not earlier than the end of the Early Devonian (after 400 Ma), but before the felsic volcanism impulse at the turn of 370 Ma. The data obtained can be indicative of asynchronous Fe-Mn deposition in the Zhezdy and Atasu ore districts.
Ключевые слова:	age of ore-bearing rocks; Mn deposits; Fe–; Atasu and Zhezda ore regions; Central Kazakhstan;
Издано:	2021
Физ. характеристика:	с.195-199