The author maintains that there are no glacial deposits present in the northern part of Western Siberia. The extensive till‐like deposits, which have formed the basis for earlier hypotheses as to glaciation of this area, are in fact water‐laid. There are in fact two varieties of till‐like deposits: the first lying at the base of the Quaternary sequence, consists of a concentration of megaclast material. It was formed in a nearshore marine environment during extremely rapid sediment accumulation which permitted little reworking by water‐action prior to burial. The second variety of till‐like deposits is characterized by better sorting of the fines and a more even distribution of megaclasts throughout the section. This material was deposited offshore, the megaclasts having been transported by floating ice.