Late Weichselian periglacial features in south-eastern Finland and the surroundings of Lake Ladoga in Russia

Ice-wedge casts recorded from the Salpausselkä moraines in south-eastern Finland show that there was permafrost in this zone at the time of the Younger Dryas Stadial. The few sites with pocket involutions north and east of Lake Ladoga indicate that even this area had permafrost at the same time. Oth...

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Bibliographic Details
Published in:Bulletin of the Geological Society of Finland
Main Authors: J. Donner, I. Delusin
Format: Article in Journal/Newspaper
Language:English
Published: Geological Society of Finland 1995
Subjects:
periglacial features
fossil ice wedges
stone pavements
cover sands
Pleistocene
Weichselian
Younger Dryas
Southeastern Finland
Karelia
Russia
Geology
QE1-996.5
Ice
karelia*
permafrost
wedge*
Online Access:https://doi.org/10.17741/bgsf/67.2.005
https://doaj.org/article/45bc3f2a0f464c0cbf6dbb7895ec8d92
Description
Summary:Ice-wedge casts recorded from the Salpausselkä moraines in south-eastern Finland show that there was permafrost in this zone at the time of the Younger Dryas Stadial. The few sites with pocket involutions north and east of Lake Ladoga indicate that even this area had permafrost at the same time. Other signs of a periglacial environment are the stone pavements with ventifacts, underneath coversands, both in the Salpausselkä zone as well as outside it. Coversands and dunes were accumulated before a closed vegetation covered the area in the beginning of the Holocene.

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