Rock Glacier Formation by High-Magnitude Low-Frequency Slope Processes in the Southwest Yukon

In the southwest Yukon, valley walls mantled by talus and glacial deposits have been modified by a variety of catastrophic processes. Avalanches, landslides, mudflows, and retrogressive slope failures have been triggered by a variety of internal and external causes. These flow mechanisms produce a range of landforms in the paraglacial environment that dominate the landscape, particularly in the higher mountain zones. Models of rock glacier formation resulting from retrogressive slope failures, high hydrostatic pressures, and avalanche activity are proposed.