Quote:
Originally Posted by jamesqf
Don't know about Arizona, but hereabouts, if you look you'll find that much of the dust comes off of areas where the soil has been disturbed by human activity. If the land has a good covering of sagebrush &c, that holds the soil in place and keeps much of the wind from even reaching the surface.
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Sand drifts are the remnants of ancient: (a) dried-up sea beds or (b) river alluvial discharge plains.
We're not talking about the 'dust bowl' of Oklahoma, although the end results are the same.