Where Does Desert Sand Come From
This Sand Was Washed in by Rivers or Streams in Distant, Less Arid Times – Often Before the Area Became a Desert. Once a Region Becomes Arid, There’s No...
Where Does Desert Sand Come From?
This sand was washed in by rivers or streams in distant, less arid times – often before the area became a desert. Once a region becomes arid, there’s no vegetation or water to hold the soil down. Then the wind takes over and blows away the finer particles of clay and dried organic matter. What’s left is desert sand.May 2, 2008
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Where does the sand in the Sahara come from?
A thin layer of topsoil is formed. The Sahara dunes were still there during fertile times – they were just grown over with grass. When conditions became arid, what little topsoil there was blew away and/or was mixed with the sand.
Robert Thorne covers electric vehicle innovations, autonomous driving systems, global mobility trends, and automotive engineering developments.
