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Understanding Wind Erosion: Impact and Deposition

Explore the fascinating world of wind erosion, from its common occurrences in deserts, beaches, and plowed fields to the processes of deflation and abrasion. Learn how wind can erode sediments like clay and sand, leading to the formation of loess deposits and sand dunes. Discover how wind-deposited loess creates fertile soil and shapes landscapes worldwide.

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Understanding Wind Erosion: Impact and Deposition

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  1. WIND EROSION

  2. Where is wind erosion most common? • Deserts • Beaches • Plowed Fields

  3. 2 WAYS WIND ERODES

  4. Deflation • Erosion caused by wind as it wears away sediments such as clay, silt, and sand • Wind will pick up small sediments and move them

  5. ABRASION • A type of erosion caused when windblown or waterborne sand grains strike other sand grains and rocks, breaking off small sediments. • Similar to sandblasting • Sand grains and the rocks they strike become pitted and polished when small fragments are broken off.

  6. ABRASION WIND

  7. DEPOSITION BY WIND

  8. LOESS • A thick deposit of very fine, wind eroded sediments • One of the larges deposits is near Mississippi River. • Fine as talcum powder • Fertile soil can evolve from loess deposits • Found in China, where sand and silt are blown from the deserts.

  9. LOESS DEPOSIT

  10. DUNES • Build up of sediments due to the sediments settle behind obstacles. • Most common wind deposits. • Form in deserts and beaches where sand is abundant.

  11. SAND DUNES

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