Abstract

The results of radiocarbon dating of catastrophic gravitational processes in Khibiny Mts (Kola peninsular) and Timansky Ridge are represented. Huge seismogenic collapse in the Khibiny Mts caused mudflow, which changed the configuration of the channel in the valley. It happened 3940-3630 B.C. In the Chut River valley (Timansky Ridge) two layers of turf overlaid by colluvium were dated about 1500 and 1600 A.D. These overlays supposed to be the tracers of seismic events in 1474 and in 1596. Absolute dating of catastrophic events requires correct geomorphologic analysis and calibration of dates.

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