Coseismic deformations in bottom sediments of lakes in Eastern Fennoscandia

The paper reviews of the available scattered information, as well as new data obtained in recent years on traces of Holocene earthquakes in lakes associated with active fault structures in the Karelia and Kola region. We present lithological-stratigraphical, paleobotanical, chronometrical data, as well as the results of geophysical studies (ground penetrating radar, seismoacoustic) in lakes. A number of examples are used to examine the most characteristic features of lake sedimentation under the conditions of recent tectonic movements of the earth’s crust.Discussed in the paper are various reasons and mechanisms of seismically induced structures formation in bottom sediments and differences from deformations with another origin.