GG101 Chapter Notes - Chapter 13-17: Erosion Surface, Braided River, Bed Load

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3 Jan 2013
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Geomorphology: the science that analyzes and describes the origin, evolution, form and spatial distribution of land forms. Denudation: the exogenic system, powered by solar energy and gravity, wears down the landscape through the processes of landmass; weathering, mass movement, erosion, transportation, and deposition. Differential weathering: different rocks offer differing resistance to weathering processes and produce a pattern on the landscape. Dynamic equilibrium model: considers slope and landform stability to be consequences of the resistance of rock materials to the attack of denudation processes. Agents of change include moving air, water, waves and ice. Slopes are shaped by the relation between rate of weathering and break up of slope materials and the rate of mass movement and erosion of those materials. Geomorphic threshold: occurs where there is a struggle against gravity where the point at which potential energy overcomes resistance against movement. Slopes that form boundaries of landforms have several general components: waxing slope (near the top),

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