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Only where clays are aggregated into particles of sand size, as on the Gulf Coast
of Texas, will they be formed into dunes. Silt is more easily picked up by the wind
but is carried away faster than sand, and there are few signs of dunelike bed ...
In few of the great sand seas are there extensive continuous areas of dunes.
There are usually many corridors of firm sand sheet or desert floor on which
travel is easy and routes often follow these in a tortuous pattern. The surfaces of
property, a scale of textural maturity that involved four textural stages was
devised in 1951. These stages are described as follows. Degree of Immature
sandstones contain a clay matrix, and the textural sand-sized grains are usually
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The New Encyclopaedia Britannica (Encyclopaedia)User Review - Not Available - Book Verdict
For virtually all its 238 years,Britannica has ruled the shelves as a peerless general encyclopedia. Reviewers have consistently given it high marks for most of the 12 criteria identified inKister's ... Read full review