ABSTRACT
Two chains of large ice-marginal formations, Salpausselka I and Salpausselka II, run across southern Finland at a distance of about 20 km apart. Three chains of ice-marginal formations, considered to be ‘extensions’ of the Salpausselka chains, are encountered in North Karelia. The varved clay studies of Sauramo indicate that the distal zone of the Central Finland ice-marginal formation was released from the ice during year 395 on Sauramo’s scale, and that the sediments began accumulating on the proximal side of the formation in year 559. The Salpausselkas with their ‘extensions’ and the Central Finland ice-marginal formation are composed of large arcuate segments. The period during retreat of the ice sheet from Finland’s southern coastal area to somewhere north of Salpausselka I should be termed the Heinola Deglaciation. Interpretations concerning the readvance of the ice sheet to Salpausselka I and the Central Finland ice-marginal formation are based on the fact that many glacial landform assemblages change sharply at these formations.
