Middle Pleistocene glaciations in Eurasia

In the middle Pleistocene, Eurasia was affected by three major glaciations. The extent of the largest glaciation, the Don glaciation, is still incompletely known. For the Elsterian glaciation as well, the eastern limits are only roughly estimated. The ice sheet probably covered the West Siberian Plain and may have been the most extensive glaciation in Central Siberia. In the Saalian, the Older Saalian glaciation was the largest. The most extensive ice sheet in West Siberia is traditionally ascribed to this stage. Middle and Younger Saalian glaciations were less extensive. Correlation of the Nordic glaciations with the glacial sequence of the Alps is still difficult, and it seems clear that more glaciations occurred than Penck and Brückner had originally envisioned.