GG231 Lecture Notes - Lecture 5: Frank Slide, Slope Stability, Anticline
Document Summary
Rock avalanche in alberta caused by a failure of a large mass of rock that rapidly fragments and travels at a high speed. The mountain is deeply eroded anticline of paleozoic limestone that dissolved through the infiltration of water: mining. Mining of coal at the base may have reduced the stability of the limestone: weather. Experienced heavy snowfall and then temperatures dropped which may have caused water to infiltrate. Large landslides cannot be prevented: they are also difficult to predict. Geology is important: its an underlying cause of most incidents, the type of rock or sediment. Human activity can trigger landslides: activities that increase the stress on a slope contributing factors. Cause: an internal or external factor that overtime reduces the stability of a slope and brings it to a point of failure. Trigger: an event that sets off the landslide. Landslide/mass wasting: the downslope movement of rock or sediment due to gravity.
