Pb–Pb Age of Carbonate Rocks of the Kamo Group, Baikit Anteclise of the Siberian Platform

• Published in: Doklady earth sciences Vol. 500; no. 1; pp. 715 - 719
• Main Authors: Gorokhov, I. M., Kuznetsov, A. B., Vasilieva, I. M., Kramchaninov, A. Yu, Rizvanova, N. G., Konstantinova, G. V.
• Format: Journal Article
• Language: English
• Published: Moscow Pleiades Publishing 01-09-2021; Springer; Springer Nature B.V
• Subjects: Age; Carbonate rocks; Carbonates; Earth and Environmental Science; Earth Sciences; Geochronology; Geology; Lead; Platforms (geology); Radiometric dating; Uplift; carbonate rocks; Baikit Anteclise; Pb–Pb age
• ISSN: 1028-334X; 1531-8354
• DOI: 10.1134/S1028334X21090105

The first direct Pb–Pb dating of carbonate rocks of the Kamo Group has been carried out. The Pb–Pb age of carbonates of the lower units (the Madra, Jurubchen, Kuyumba, and Vingold formations) of this sedimentary sequence is 1510 ± 50 Ma, while the age of the upper unit (the Iremeken Formation) is 1490 ± 50 Ma. The ages obtained show that all the carbonate formations of the Kamo Group are Lower Riphean (Early Mesoproterozoic), and their deposition continued for a period of no longer than several tens of millions of years. The new geochronological data allow us to correlate the Riphean deposits of the Baikit Anteclise with the rocks of the Riphean cover of the Anabar Uplift.