The influence of tectonics on the development of the Saimaa-Ladoga lake system in the Late Glacial and Holocene

A comparison of the spatial position of glacial relief forms, hydrographic network, crystalline basement faults and morphologically pronounced activated faults shows their close correlation. The main elements of the relief «fit» into the spatial tectonic «frame», and the spatial and temporal characteristics of the seismogenic activity of individual fault zones are comparable with the age of transformation of the hydrographic system, which indicates a significant influence of active tectonics on the formation of the relief in the Late Glacial and Holocene.