Definition: Cold period that occurred towards the end of the last (Devensian) glacial stage in Scotland, equivalent to the Younger Dryas of NW Europe. The event took place about 11000-10000 radiocarbon years BP. The period is named after the advance of ice from the SW Highlands to the southern shore of Loch Lomond.
Many questions remain about environments on Orkney during this cold interval. In Scotland, the Loch Lomond Stadial is a key interval in shaping of the landscape. In the mountains, glaciers reformed and advanced rapidly. In the lowlands, permafrost returned. Intense frost weathering generated screes and solifluction, the soil flow generated by flow of the active layer in summer, led to sludging of considerable thicknesses of glacial deposits to the base of slopes.