The role of blocks of dead ice in the deposition of late glacial sediments in a large valley : A case study from the Vistula river valley in the Grudziądz basin, north Poland

The paper describes the processes associated with sediment deposition in the presence of large blocks of dead or stagnatingice. The study examines a large valley depression in the Grudziadz Basin (lower Vistula Valley) which formed part ofthe area covered by the last glaciation. A detailed description of the glaciolimnic landforms arising in that depositional setting was prepared along with a record of their structural and textural variety and their paleogeographical implicationsare discussed. It is concluded that the whole terrace system of the Grudziadz Basin was mainly formed in the presence of dead ice.