WIND EROSION

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WIND EROSION
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Where is wind erosion most common?

• Deserts
• Beaches
• Plowed Fields

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2 WAYS WIND ERODES
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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

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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.

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ABRASION
WIND
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DEPOSITION BY WIND
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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.

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LOESS DEPOSIT
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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.

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SAND DUNES