On the preservation of Devonian celesta in the Pskov lowland

Abstract

A remnant of Devonian celesta located in the Pskov lowland and along the southern shore of the Pskovskoye Lake is rather well preserved because of its position «in the shade» of the Pskov-Chudskaya depression. During the glaciation the depression was filled with a vast block of stagnant («dead») ice, which was overflowed by an active ice; the latter however could not exert considerable erosion on the bedrock. The preservation of the Baltic-Ladoga glint bordering the Guld of Finland from the south and another glint south-west of the Ilmen' Lake may be explained in a similar way.