Physical Geology Notes

Physical Geology Notes Chapter Seven Weathering: Chemical alteration and mechanical crack-up of gemstone and sediment. * depth of air/ piddle penetration * as distance of formation from surface rises, so does susceptibility to weathering * glaring weathering: The physical breakup of pit and rollnrolls. * chemical weathering: The decomposition of rocks and minerals caused by stability-increasing chemical reactions.

-rate of weathering positively linked to presence or absence of soften mountains, and thus to plate tectonics Physical Weathering-Mechanical Processes ( weewee, fire , roots) * development of joints- rock moved upward after erosion, causes fractures -columnar joints in igneous rock * crystal growth- salts precipitated from seeping groundwater * frost wedging- frozen seeping water * effects of heat- rocks dont conduct, spall (outer shell) breaks away * plant roots- seeds germinate in cracks Chemical Weathering-Chemical Reactions (stabilize to surface temp) * c...If you want to get a sound essay, order it on our website: BestEssayCheap.com

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