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Демидов И. Н.
О максимальной стадии развития Онежского приледникового озера, изменениях его уровня и гляциоизостатическом поднятии побережий в позднеледниковье
// Геология и полезные ископаемые Карелии. Вып. 9. Петрозаводск: КарНЦ РАН, 2006. C. 171-178
Based on the integrated study and dating of coastal and bottom deposits of Lake Onega, a model of the evolution of periglacial Lake Onega (PLO) and the glacioisostatic uplift of the earth
crust within the lake basin and Late Glacial and Early Holocene times. PLO had reached its maximum size about 11 400 years ago, as shown by C14-dating. About 11 300 y.a. new lake thresholds
to the White Sea basin and Lake Ladoga via the River Vidlitsa were opened consecutively. As a result, the water level of Lake Onega dropped by about 20 m. The next large-scale regression
was brought about by re-opening runoff along the River Svir ca. 10 300 y.a. Regression was followed by transgression
connected with the active uplifting of the northern lakeshore 9 800–9 700 y.a., a general warming of the climate and landslide processes in the lake threshold area in the Svir River valley. The gradient of distortion of the lake basin by 100 km was 30 m 11 300 y.a., 25–27 m 10 300 y.a. and 18 m 9600 y.a.
crust within the lake basin and Late Glacial and Early Holocene times. PLO had reached its maximum size about 11 400 years ago, as shown by C14-dating. About 11 300 y.a. new lake thresholds
to the White Sea basin and Lake Ladoga via the River Vidlitsa were opened consecutively. As a result, the water level of Lake Onega dropped by about 20 m. The next large-scale regression
was brought about by re-opening runoff along the River Svir ca. 10 300 y.a. Regression was followed by transgression
connected with the active uplifting of the northern lakeshore 9 800–9 700 y.a., a general warming of the climate and landslide processes in the lake threshold area in the Svir River valley. The gradient of distortion of the lake basin by 100 km was 30 m 11 300 y.a., 25–27 m 10 300 y.a. and 18 m 9600 y.a.
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Last modified: January 26, 2007