Wind Blown Deposits in Deserts

Wind Blown Deposits in Deserts - . The deposited material...

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Wind Blown Deposits in Deserts Wind blows fine particles out of deserts each year. Some are deposited in the sea. Others accumulated on land to form fertile land known as loess . Features Produced by Water in Deserts Rain in deserts is infrequent and unpredictable. When it does occur, it does so in torrents. Torrential run-off occurs in small narrow valleys called rills . These rills may enlarge to form gullies . The gullies may further enlarge to form deep steep-sided valleys with wide flat floors and rocky walls called wadis. Torrential rains carries large quantities of materials which may turn into mudflows
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Unformatted text preview: . The deposited material is called alluvial flans . This may be deposited into wadises. If irrigated, they form very fertile alluvial plains. Some valleys form good drainage basins. They may form temporary lakes known as playas or sebkhas . These soon dry up forming the playas into salt-flats . Some basins may be rimmed by uplands. The basins may join together to form a continous feature called a bajada . Between the playa and bajada is a gently sloping platform called a pedimen...
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This note was uploaded on 12/04/2011 for the course BSC 1085 taught by Professor Staff during the Fall '09 term at Broward College.

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