02_f416M_sed-production_handout

02_f416M_sed-production_handout - WEATHERING AND...

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1 WEATHERING AND SEDIMENTARY ROCKS Weathering - Process which acts at the earth's surface to… Erosion - The movement of weathered material from the site of weathering. Primary agent is ______, but gravity acts in concert with ______________.
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2 Types of Weathering 1. _______________ - the breakdown of rock material into smaller and smaller pieces with no change in the chemical composition of the weathered material. 2. ___________ - the breakdown of rocks by chemical agents (e.g., water). Estimates of Relative Contributions : Mechanical Weathering: 5.6×10 15 g/yr Chemical Weathering: 4.0×10 15 g/yr Roughly equal, but not evenly distributed over earth surface.
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Physical Weathering is most significant in: __________________ Composition parent rock influences sediment production rate Some Physical Weathering Processes . Frost Action - Water freezes and expands because ______ _____________. Action wedges the rocks apart. Temperature must move back and forth over _____________. Thermal Expansion and Contraction
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02_f416M_sed-production_handout - WEATHERING AND...

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