EOLIAN Processes - EOLIAN & ARID LANDSCAPES *WIND -...

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** WIND --- works as an agent of erosion, transport, & deposition --- eolian (aeolian) comes from the Greek, for the Greek ruler of the winds, Aeolus --- most effective in areas of little or no vegetation, & little precipitation * Eolian Erosion: 2 primary processes 1) Deflation : process whereby wind sweeps along a surface carrying away the finest particles , leaving behind the larger particles & fragments * desert pavement --- a landscape as a result of deflation, where large pebbles and stones remain with little to no finer particles between them; this helps protect against further deflation of the remaining fine particles * blowout hollows or depressions --- shallow desert basin created by deflation, where only hard soil remains; may be small or large in diameter 2) Abrasion : grinding of surfaces with a "sandblasting" action by small, windblown particles --- restricted to a layer only 1-2 meters above the surface * ventifacts --- rocks which bear evidence of wind abrasion, polished , grooved, and pitted; often have one well worn, smoothed side * yardangs --- relatively low keel shaped idges or streamlined rock structures that form parallel to the most effective wind direction
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EOLIAN Processes - EOLIAN & ARID LANDSCAPES *WIND -...

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