Deflation, in geology, erosion by wind of loose material from flat areas of dry, uncemented sediments such as those occurring in deserts, dry lake beds, floodplains, and glacial outwash plains. Local areas subjected to deflation may result in deflation hollows or blowouts.

How is wind deflation different from wind abrasion?

Wind abrasion is the process of the wearing away of a solid object due to the impact of particles carried by wind. Deflation is the removal of loose sediment from the flat land surface by wind.

Does wind cause deflation?

Wind erosion is referred to as eolian erosion. Wind cannot carry as large particles as flowing water, but easily pick ups dry particles of soil, sand and dust and carries them away. Wind generally causes erosion by deflation and/or abrasion.

What is deflation weathering?

Deflation surfaces, also called deflation armor, desert pavement, deflation crusts, armoring, or several dozen other comparable terms can be recognized as a layer of rocks and pebbles covering the ground surface over finer sediments. These surfaces form through erosion processes, mainly wind weathering.

What is an example of wind erosion?

Wind erosion is also a natural process. The large parallel sand dunes in south-west Queensland, including the Simpson Desert National Park, are the result of wind erosion and deposition over thousands of years. These dunes are constantly moving and roads and tracks can be covered by drifting sands in only a few hours.

How can you slow or stop wind erosion?

Reducing Wind Erosion The best way to reduce wind erosion is to keep the wind off the soil surface by covering the soil surface. Growing vegetation, either cash crops or cover crops, protects the soil and keeps the winds higher off the surface. Standing crop residues function the same way.

What are the 2 types of wind erosion?

Wind erosion processes The three processes of wind erosion are surface creep, saltation and suspension.

What is the main mechanism of wind erosion?

The main mechanism of wind erosion is wind propelling sand and dirt causing erosion. Over time all the impacts of the loose sand on the rocks starts to make the rocks chip away and erode. Wind erosion is obviously more common in windy areas.

What is dust deflation?

Deflation is a term of geomorphology used for the removal of solid particles by wind (from Latin: deflare, to blow away). Deflation is the common and most important form of erosion in flat deserts; in deserts with some relief, rain and running water (however rare) become the major agents.

What are two kinds of wind erosion?

Wind erosion uses two main mechanics: abrasion and deflation. Deflation is further broken down into three categories: surface creep, saltation and suspension.

What is the deflation action of the wind?

Deflation is an action of wind when it picks up or remove loose particles from an area and leaves a denuded surface covered with coarse material too large for wind transport. The most noticeable results of deflation in some places are shallow depressions called blowouts.

What is the definition of deflation in geology?

See Article History. Deflation, in geology, erosion by wind of loose material from flat areas of dry, uncemented sediments such as those occurring in deserts, dry lake beds, floodplains, and glacial outwash plains.

What kind of basins can wind deflation produce?

Wind deflation can produce shallow basins with downwind dunes, as in southeastern Australia. Even very large basins, such as the Qattara Depression of Egypt, have been ascribed to deflation. Local cataclysmic disruptions of drainage (e.g., volcanism, landslides, and meteorite impacts) may produce playas in desert regions.….

Where are the deflation zones of the eolian process?

The arrow points to shiny black desert varnish on these rocks of Egypt’s southwest desert (photograph by Carol Breed). Most eolian deflation zones are composed of desert pavement, a sheetlike surface of rock fragments that remains after wind and water have removed the fine particles.