WEATHERING AND MASS MOVEMENT (Chapter 16) - Lecture Outline

Last updated: 04/08/07

Basic considerations

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Weathering produces all soils, etc.

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Erosion - removal of sediments

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Mass wasting

1. Weathering and the rock cycle

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Weathering definition

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Erosion and mass transport

2. Controls on weathering

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Properties of the parent rock

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Climate

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Soil

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Time

3. Chemical weathering

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Interaction of air and water with minerals

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role of water

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role of carbon dioxide

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role of moist soils
 

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Surface area

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Carbon dioxide

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Relative stability of minerals

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Oxygen and oxidation

4. Physical weathering

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Joints

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Activity of plants and animals

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frost wedging

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exfoliation

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duration of weathering

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bedrock type

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climate

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topography

5. Soils

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input material

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losses

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transformations and translocations

6. Mass wasting

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definition of mass wasting

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mass movement

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nature of slope materials

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unconsolidated material

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angle of repose

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role of water

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consolidated materials
 

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triggers of mass movement

7. Classifications of mass movements

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Characteristics

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nature of material

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velocity of movement

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nature of movement
 

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Rock falls

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Rock slides

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Rock avalanches

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Unconsolidated mass movements

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creep

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earthflow

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debris flow

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mudflow

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debris avalanche

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slump

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debris slide
 

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examples of landslide disasters