GEOL 1 Lecture Notes - Lecture 12: Mass Wasting, Metamorphism, Pressure Gradient
2 Dec 2020
School
Department
Course
Professor
Document Summary
Slope destabilization dry sandcastle) destabilizing, 35o is average but there is a lot of variation (1o to 50o) Angle of repose angle of maximum steepness that material can pile up before. Lack of moisture dry particles are loose and will slide around (like building a. Lack of vegetation plant roots keep sediment in place. Excessive vegetation vegetation adds weight to soil, plants suck water out of sediment and dry it out, roots make easy pathways for water to soak deep into sediment. Type of movement rolling, sliding, flowing, falling. Creep very slow mass wasting, as dirt moves fences move along. Unstable slopes don"t automatically have a landslide, something will trigger it. Thunderstorms add water, earthquakes shake ground, human landscaping/devegetation. Risk assessment maps show where landslides are most likely. Risks change thought the year as weather changes. Drainage control control amount of water present. Building codes preventing building in bad spots. Retaining walls material that does slide is caught.
