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Essentials of Geology, 8e

Weathering and Soils Chapter 5 . Essentials of Geology, 8e Stan Hatfield and Ken Pinzke Southwestern Illinois College. Earth's external processes. Weathering

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Essentials of Geology, 8e

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    1. Essentials of Geology, 8e Frederick K. Lutgens & Edward J. Tarbuck

    2. Weathering and Soils Chapter 5 Essentials of Geology, 8e Stan Hatfield and Ken Pinzke Southwestern Illinois College

    3. Earth’s external processes Weathering – the physical breakdown (disintegration) and chemical alteration (decomposition) of rock at or near Earth’s surface Mass wasting – the transfer of rock and soil downslope under the influence of gravity

    4. Earth’s external processes Erosion – the physical removal of material by mobile agents such as water, wind, ice, or gravity

    5. Weathering Two types of weathering Mechanical weathering – breaking of rocks into smaller pieces Four types of mechanical weathering Frost wedging – alternate freezing and thawing of water in fractures and cracks promotes the disintegration of rocks

    6. Frost wedging

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