Relief and quaternary sediments of the Petrozavodsk State University's Botanic Garden as the basis of its present landscapes

The PetrSU Botanic Garden is situated on the North-West shore of the Petrozavodsk bay of the Onego lake in the limits of the Solomennoye denudative-tectonic ridge on the absolute marks 33-123 m above sea-level. Small moraines of the last Upper Valdai ice accretion form a broken cover on volcanogenous sedimentary rocks of the Proterozoic and they are blocked here and there by sandy-gravel, lake-glacial or lake sediments fixing the gradual fall of the Onego basin’s level during the late-glacial and the post-glacial age. Paleoseismic dislocations of the post-glacial period are presented be seismic colluvial screes, by wrecked and deformed rocks. Rugged relief of the territory, the combination of the Quaternary sediments, different by their structure and dampness made for the diversity of the Botanic Garden’s present landscapes.