NATS 1750 Lecture Notes - Lecture 13: 1994 Northridge Earthquake, Mass Wasting, La Conchita, California
26 Oct 2016
School
Department
Course
Professor
Document Summary
Acid rain damaging a marble statue is an example of: chemical weathering. When people and communities are in the way, natural disaster may result. Mass wasting: refers to downslope movement of rock, regolith, and soil under the direct influence of gravity. The role of mass wasting in landform development. Combined effects of mass wasting and running water produce steam valleys. Mass wasting will slowly drag it back down; mountain range can built up and get flatten down by time. Most rapid and spectacular mass-wasting events occur in areas of rugged, geologically young mountains. Mass wasting and erosional processes slowly change these rugged mountains to more subdued. Sediment pores fill with water, cohesion among particles are destroyed. Waster adds weight to a mass of material. Unconsolidated granular particles assume a stable slope at the angle of repose. Over steepened of slopes are unstable and can trigger mass wasting. Natural processes, such as stream cuts, over steepen a slope.
