CO4 Geology PDF
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Summary
This document covers the topic of Exogenic Processes of the Earth, specifically focusing on mass wasting, its controlling factors, and triggers. It explains the role of gravity and controlling factors, types of mass wasting, and related topics.
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CO4: geology Exogenic Processes of the Earth Mass wasting downhill movement of masses of bedrock, rock debris, or soil driven by the pull of gravity most easily avoidable major geologic hazard Controlling factors in...
CO4: geology Exogenic Processes of the Earth Mass wasting downhill movement of masses of bedrock, rock debris, or soil driven by the pull of gravity most easily avoidable major geologic hazard Controlling factors in Mass Wasting Gravity CO4: geology 1 driving force of mass wasting normal force shear force shear resistance Shear resistance < shear force = landslide Steep slopes- shear forces maximized by gravity Shear Strength and Water shear strength- resistance to movement or deformation saturated soil has reduced shear strength due to increased pore pressure small amount of water in soil can prevent downslope movement (like building a sand castle) ` Mass wasting triggers seismic activity heavy rainfall construction lack of vegetation - no roots to hold soil in place Classification of mass wasting Rate of movement
