Abstract

The heights of the main epiglacial terraces in the eastern part of the Kildin Island were precised. 14 C dating of clamshells from deposits of the terraces at the heights 8-14 m and lower showed that these terraces were formed by abrasion of the older (Atlantic stage of the Holocene) terrace deposits. The basin of the lake Mogil'noye is supposed to originate 4.5 Ma B.P. due to local tectonic movements or permafrost degradation. The closing dike now separating the lake from the sea began its formation in the Early Subatlantic time as a growing submarine bank. The final separation of the lake happened in the middle of the Atlantic Time.

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