CO4 Geology PDF
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This document appears to be part of a geology course or textbook, focusing on exogenic processes and mass wasting. It discusses driving forces, contributing factors, and unstable situations related to this geological phenomenon. The document also includes information about triggers, classifications of mass wasting, and types of mass wasting.
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CO4: geology Exogenic Processes of the Earth Mass wasting The downhill movement of bedrock, rock debris, or soil caused by gravity's pull most easily avoidable major geologic hazard Controlling factors in Mass Wastin...
CO4: geology Exogenic Processes of the Earth Mass wasting The downhill movement of bedrock, rock debris, or soil caused by gravity's pull 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 When shear resistance is less than shear force, a landslide occurs On steep slopes, gravity maximizes shear forces 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
