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Q: A loose deposit of wind blown silt that has been weakly cemented with calcium carbonate and montmorillonite , formed in arid and semi-arid regions, the type of soil formation known as :
  • A. Peat
  • B. Humus
  • C. Muck
  • D. Loess
Correct Answer: Option D - Wind transported soils– Soils deposited by wind are known as aeolian soil. • Large sand dunes are termed by winds, sand dunes occur in arid regions and on the leeward side of sea with sandy beaches. • Loess is a silt deposit made by wind. These deposit have low density and high compressibility. The bearing capacity of such soils is very low. The permeability in the vertical direction is large.
D. Wind transported soils– Soils deposited by wind are known as aeolian soil. • Large sand dunes are termed by winds, sand dunes occur in arid regions and on the leeward side of sea with sandy beaches. • Loess is a silt deposit made by wind. These deposit have low density and high compressibility. The bearing capacity of such soils is very low. The permeability in the vertical direction is large.

Explanations:

Wind transported soils– Soils deposited by wind are known as aeolian soil. • Large sand dunes are termed by winds, sand dunes occur in arid regions and on the leeward side of sea with sandy beaches. • Loess is a silt deposit made by wind. These deposit have low density and high compressibility. The bearing capacity of such soils is very low. The permeability in the vertical direction is large.