chapter 16 - Understanding Earth Chapter 16: WEATHERING,...

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Unformatted text preview: Understanding Earth Chapter 16: WEATHERING, EROSION, & MASS WASTING Interface Between Climate and Tectonics Grotzinger Jordan Press Siever Weathering and Erosion: Summary 1. Factors that control weathering; 2. Processes of physical weathering; 3. Processes of chemical weathering; 4. Creation and erosion of soils Definitions Weathering: All near-surface processes that break up and decay rock, by a combination of physical fracturing and chemical decomposition. Erosion: All processes by which soil and rock fragments are loosened and moved downhill or downwind. Regolith: The layer of loose, heterogeneous material lying on top of bedrock; includes soil and unweathered fragments of parent rock. Soil: The top part of the regolith that contains sand, clay and humus , but without the larger fragments of unweathered rock. All rock weathers when exposed to the atmosphere and aqueous fluids (water-based fluids), with rate/degree controlled by: rock properties, rainfall and temperature, presence or absence of soil, length of exposure to aqueous solution and air....
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chapter 16 - Understanding Earth Chapter 16: WEATHERING,...

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