GG231 Study Guide - Final Guide: Consumerism, Debris Flow, Anastomosis
Document Summary
Fall: moves through air, lands at base of slope, triggered by vibration, ice or vegetation, rapid process. Slide: movement in contact with underlying surface, ex. Flow: plastic or liquid movement in water and sometimes air, mass breaks up and flows during movement, ex. Landslides are mainly a result of a change in the forces on the slope: Driving forces: uplift and erosion, cause the rock material to move faster down slope. Resisting forces: acts as friction force that is against the motion of rock materials. Geographic distribution: distribution of landslide-prone materials in canada: Landslides are most common in mountainous areas, the st. lawrence lowland, and river valleys on the western interior plains (british columbia, yukon and alberta) Materials particular prone to land sliding include lacustrine and marine silts and clays, cretaceous shales, Three factors are expected to increase the occurrence of landslides in some areas of the world in this century: Urbanization and development will increasingly expand into landslide-prone areas.
