GENERAL GEOLOGY

GEOLOGY

ENGINEERING GEOLOGY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Process of removing loose sand and dust sized particle from an area.
A
Abrasion
B
Deflation
C
Wind erosion
D
Transportation by wind
Explanation: 

Detailed explanation-1: -Wind erodes the Earth’s surface by deflation, the removal of loose, fine-grained particles by the turbulent eddy action of the wind, and by abrasion, the wearing down of surfaces by the grinding action and sand blasting of windborne particles.

Detailed explanation-2: -Deflation is the process of simply removing the loose sand and dust sized particles from as area, by fast moving winds. Wind deflation can successfully operate in comparatively dry regions with little or no rainfall and where the mantle is unprotected due to absence of vegetation.

Detailed explanation-3: -Abrasion is the removal of material from rock or soil by the impact of saltating sand. Deflation is the removal of soil or cohesive sediment due to wind shear and does not require the presence of saltating particles, although the two processes can occur simultaneously.

Detailed explanation-4: -Erosion is defined as the set of natural processes that loosen, remove and transport weathered or unweathered solid material such as soil, sediment, mud, regolith, rock fragments and other particles from the landscape by downhill or downwind displacement.

Detailed explanation-5: -Deflation is a term of geomorphology used for the removal of solid particles by wind (from Latin: deflare, to blow away). Wind erosion may be divided into two types: deflation (actual removal of grains) and abrasion (q.v., the polishing and scouring of rock surfaces by wind-carried grains).

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