On geomorphic features of the isthmus between the Onezhskoye and Ladozhskoye lakes

Abstract

The paper describes topography and genesis of the young - Late Valdai - Constructional landforms and ancient erosional buried surfaces, regional geological cross-sections being given. Paricular attention has been given to drainage pattern, probably affected by recent faulting. Analysis of longitudinal profile of the largest drainage system (Oyat - Tuksha - Oshta rivers) revealed maximum in the North-West region number of terraces; analytical data are given on the age of floodplains and two lower terraces.