The Neoproterozoic of the west of the Siberian Platform

A new scheme of regionalization is proposed for the Riphean of the west of the Siberian Platform. Most attention is paid to the Middle-Angara intracra tonal trough. It originated in the Mesoproterozoic, combined with the Yenis ei pericratonal trough at the beginning of the Neoproterozoic, and complete d its formation in the Vendian. The paper refines the correlation between t he sections of the Baikit anteclise, Katanga saddle, and Chadobets elevatio n. With a complex of methods, the sections of the internal platform regions were compared with the All-Siberain stratigraphic scheme. The paleontologi cal geological data permitted substantiating the time borders of the life o f Kerpylian, Lachandinian, and Baikalian in these sections, which do not co ntradict the data on the isotopic carbon composition. A microfossil complex from the Dzhelindukon formation points to the Upper Riphean age of the Kam ov series.