GEOG 1290 Lecture Notes - Lecture 20: Desert Pavement, Abrasive Blasting, Deflation
16 Dec 2017
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Document Summary
Limited to dry regions with little vegetation such as deserts and coastal landscapes (note: can be moist) where fine loose particles are found in abundance. Erodes more rapidly if wind blows constantly from one direction. Where wind drives particles of sand and dust against exposed rock and soil surfaces (i. e. , needs particles to cause erosion) Can be very intense (e. g. , sandblasting action) to produce pits, grooves and hollows in rock, but limited to lowermost meter or two from the ground. The removal of loose particles from the ground. Unlike abrasion, does not require particles for erosion. Larger gravel fragments can be rolled along the ground and only in strong winds. Sand is limited to the lowermost meter or two and requires moderate to strong wind. The finest particles (clay and silt) can be lifted (suspended) into the air up to a kilometer by turbulent air flow.
