The vast majority of works devoted to the description and correlation of the terrace levels of the Baltic, Ladoga, Onega, White, Barents, and Kara Seas and adjacent territories usually consider some local area or a relatively small region.

The study of global fluctuations in the level of the World Ocean in the Neogene and Anthropogenic in recent years, to some extent unexpectedly for researchers who are in contact with this problem, began to acquire in our country more and more distinct practical orientation ...

In the last third of the last century, in the geology of the Anthropogene (Quaternary period), a radical revolution of the basic concepts took place: the theory of continental glaciations, which replaced the drift theory, became established.