desert pavement

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desert pavement

[¦dez·ərt ′pāv·mənt]
(geology)
A mosaic of pebbles and large stones which accumulate as the finer dust and sand particles are blown away by the wind. Also known as desert crust.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
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Similar jostling of small stones across the surface of the ground can play a part in healing damaged desert pavements. In small-scale field experiments begun in 1983, Haff and his colleagues removed all surface stones from square patches of various sizes in the Mojave Desert.
One testament to the age and stability of some desert pavements is the desert varnish that coats only the upward-facing exposed surfaces of the pebbles.
Results from these experiments could guide efforts to create new desert pavements at the Fort Irwin sites, he notes.
As the battalions maneuvered across the arid terrain, their vehicles often broke through a delicate crust known as desert pavement. This type of veneer covers as much as half of the world's arid lands.
Damage can happen in a moment, out me processes that sculpt desert pavement typically act slowly, taking centuries to generate a surface resistant to wind erosion.
This type of erosion leads to the formation of desert pavements and wind deposits.
On weathering, the silcrete forms a desert pavement known as "billy gibbers."
This layer is known as a desert pavement and by other different names in different deserts.
Under the desert pavement, which protects them from accelerated erosion, the horizons of typical reg soils contain almost no stones.
This has led to the formation of a surface desert pavement that protects the underlying soil from intense erosion.
In these terms, the irreversible transformation of arid ecosystems into anthropic deserts is well documented in many of the world's arid areas, and shown by the cities buried under sand dunes along the Old Silk Road in northwestern China, the steppe grasslands in northern Africa that have become desert pavements, and the new dune fields in former croplands in the Sahel.
This process leads to the creation of desert pavements, the main cause of desertification.