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Chapter 15 Eolian Processes and Arid Landscapes

Chapter 15 Eolian Processes and Arid Landscapes. Geosystems 6e An Introduction to Physical Geography. Robert W. Christopherson Charles E. Thomsen. Eolian Processes and Arid Landscapes. The Work of Wind Eolian (or aeolian) – erosion, transportation, and deposition performed by wind  

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Chapter 15 Eolian Processes and Arid Landscapes

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  1. Chapter 15Eolian Processes and Arid Landscapes Geosystems 6e An Introduction to Physical Geography Robert W. Christopherson Charles E. Thomsen

  2. Eolian Processes and Arid Landscapes • The Work of Wind • Eolian (or aeolian) – erosion, transportation, and deposition performed by wind   • Types of Eolian Erosion • Loess – sediments left by glaciers • Overview of Desert Landscapes   • Eolian landforms • Desertification – expansion of desert lands at the expense of less arid types of land

  3. The Work of Wind  • Eolian Erosion   • Deflation – the removal and lifting of individual particles • Desert pavement • ORVs • Blowout depressions • Abrasion – the grinding or rock surfaces by particles in the air

  4. Desert Pavement Figure 15.3

  5. Eolian Transport Figure 15.6

  6. Eolian Deposition Figure 15.6

  7. Sand Ripples Figure 15.7

  8. Dune Cross Section Figure 15.9

  9. Sandy Regions of the World Figure 15.12

  10. Loess Regions of the World Figure 15.14

  11. Loess Deposits Figure 15.13

  12. Arid Regions Figure 15.15

  13. Overview of Desert Landscapes   • Desert Climates   • Subtopical high pressure cells • Rain shadow • Continental areas • Desert Fluvial Processes • Flash floods • Wash or arroyo • Playa  • Alluvial fan

  14. Alluvial Fan Figure 15.18

  15. Overview of Desert Landscapes   • Desert Landscapes  • Differential weathering 

  16. Differential Weathering Figure 15.20

  17. Basin and Range Figure 15.23

  18. Desertification Figure 15.24

  19. End of Chapter 15Eolian Processes and Arid Landscapes Geosystems 6e An Introduction to Physical Geography Robert W. Christopherson Charles E. Thomsen

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