GEOLOGY

Detailed explanation-1: -The term “landslide” encompasses five modes of slope movement: falls, topples, slides, spreads, and flows. These are further subdivided by the type of geologic material (bedrock, debris, or earth). Debris flows (commonly referred to as mudflows or mudslides) and rock falls are examples of common landslide types.

Detailed explanation-2: -A landslide is a mass movement of material, such as rock, earth or debris, down a slope. They can happen suddenly or more slowly over long periods of time. When the force of gravity acting on a slope exceeds the resisting forces of a slope, the slope will fail and a landslide occurs.

Detailed explanation-3: -Landslides are part of a geologic process called “mass wasting, ” which is characterized by the downslope movement of material under the force of gravity. Conditions that precipitate landslides include: Saturation of soil and rock material with water. Vibrations due to earthquakes or blasting.

Detailed explanation-4: -Landslides can overwhelm, and even pollute streams and waterbodies with excess sediment. In extreme cases they can dam streams and rivers, impacting both water quality and fish habitat. Landslides can wipe out large tracts of forest, destroy wildlife habitat, and remove productive soils from slopes.