The Proterozoic Pogor’uy Formation of Yenisei Ridge: Age and Provenance Sources According to U/Pb Dating of Detrital Zircons

• Published in: Doklady earth sciences Vol. 484; no. 1; pp. 28 - 31
• Main Authors: Priyatkina, N. S., Kuznetsov, N. B., Rud’ko, S. V., Shatsillo, A. V., Khudoley, A. K., Romanyuk, T. V., Maslov, A. V.
• Format: Journal Article
• Language: English
• Published: Moscow Pleiades Publishing 2019; Springer Nature B.V
• Subjects: Age; Dating; Earth and Environmental Science; Earth Sciences; Geological time; Geology; Isotopes; Lead; Precambrian; Provenance; Radiometric dating; Sandstone; Zircon
• ISSN: 1028-334X; 1531-8354
• DOI: 10.1134/S1028334X19010136

The results of U–Pb-isotopic dating of detrital zircons from sandstones of the Proterozoic Pogor’uy Formation, occurring to the north and south of the East Angara block of Yenisei Ridge, are presented. The sandstones of the northern part of the East Angara block are dominated by Archean and Paleoproterozoic populations of detrital zircons, while the samples from the southern part of the East Angara block have been revealed up to 25% of Mesoproterozoic age grains. The detrital zircon ages allow limiting the maximum sedimentary age of the Pogor’uy Fm. and the entire interval of its formation to 1.2–0.9 Ga. The paleogeographic features of the Pogor’uy Fm. deposition in the context of the existing opinions on the location of Siberia within the Rodinia supercontinent were examined.