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Ridge Sands

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Ridge Sands 

masses of sands forming narrow parallel ridges. Their direction depends on the prevailing winds. They are a few kilometers long; the heights of half-overgrown sand ridges range from 1 to 70 m, and of bare ridges, up to 200 m. The distance between ridges is from tens of m to 2–4 km. They form through the action of wind-current eddies, which arise as a result of the rotation of the earth; another factor in their formation is the unequal heating of slopes of various exposures. Ridge sands are widely distributed in Middle Asia, Australia, and Africa.



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namely: Alluvial plains, coastal ridge sands, rolling sandy plains, the uplands, and the Obotme isolated hills (collection of hills that rise to 150 metres above sea level).
 
 
 
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