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Chapter 10

Chapter 10. Weathering, Soil, Erosion. Weathering . Mechanical Weathering (Physical) Pressure Release, Frost Wedging, Abrasion , Organic activity Chemical Weathering (removing or exchange of ions from the minerals) Dissolution, Hydrolysis, Oxidation , .

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Chapter 10

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  1. Chapter 10 Weathering, Soil, Erosion

  2. Weathering • Mechanical Weathering (Physical) Pressure Release, Frost Wedging, Abrasion, Organic activity • Chemical Weathering (removing or exchange of ions from the minerals) Dissolution, Hydrolysis, Oxidation,

  3. Erosion Transport  Deposition

  4. Pressure Release

  5. Frost Wedging

  6. Abrasion

  7. Organic Activity

  8. Dissolution Occurs when water removes ions from the mineral. Example : Halite

  9. Hydrolysis Is the exchange of H or OH from an ion in a mineral.

  10. Oxidation

  11. EXFOLIATION • Chemical and Mechanical act together • Exfoliation large plates or shells split away like onion layers

  12. Soil • A thin layer of loose fragments , clay, sand overlies bedrock is called REGOLITH. • SOIL is defined as the upper layers of regolith that support plants. • Soil is a mixture of mineral grains, organic material

  13. Soil Horizons Leaves, stems, and Flowers in the soil surface Litter  decomposed  Humus

  14. Soil Forming Factors • Parent Rock • Climate • Rates of plant growth and Decay • Slope Aspect and Steepness • Time • Soil Transport

  15. Erosion

  16. Landslides • Mass Wasting Download movement of earth material caused by Gravity

  17. Angle of Repose

  18. Types of Landslide

  19. Creep 1cm per year

  20. Fall

  21. Animations Animations for mass Wasting

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