ABSTRACT
The glaciofluvial deposits in Finland can be divided into two age groups. By far the largest and most important group is represented by deposits of the Late Weichselian Deglaciation, some of them deformed by oscillation and readvance of the continental ice sheet. The other group comprises Early Weichselian or pre-Weichselian deposits, which characteristically include deformations caused by glacial erosion. Erosion also cut the esker sediments and redeposited them in the littoral zone. This erosion was most intense in areas where waves could affect the glaciofluvial deposits unhindered. Owing to the genetic conditions, the mode of formation, the type of material and post-depositional processes, glaciofluvial deposits vary considerably in morphology and stratigraphy from one part of Finland to another. The glaciofluvial deposits on which the activated or oscillating glacier deposited till represent a separate group. Glaciotectonic features such as folds and faults are also common in glaciofluvial sediments.
