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Q26 (CDS-I/2012) Geography › World Physical Geography › Weathering and erosion Answer Verified

The soil formed by wind dust in and around hot deserts is called—

Result
Your answer:  ·  Correct: D
Explanation

The soil formed by windblown dust in and around hot deserts is called loess soil. Loess is a fine, mineral-rich material composed primarily of silt-sized particles [1]. It is an aeolian (wind-blown) deposit that accumulates at the edges of deserts or outside desert limits [2]. For instance, winds blowing across the Gobi Desert carry fine particles that build up as extensive loess deposits in northern China [1]. While desert soils themselves are often sandy or gravelly [3], the finest dust travels enormous distances before settling as loess [4]. Loess is characterized by its loose, fragmented nature and its ability to form thick blankets over pre-existing landscapes [1]. Although it is technically a sediment, it is frequently referred to as loess soil due to its pedogenic characteristics and agricultural significance.

Sources

  1. [1] Physical Geography by PMF IAS, Manjunath Thamminidi, PMF IAS (1st ed.) > Chapter 17: Major Landforms and Cycle of Erosion > Loess > p. 239
  2. [2] Certificate Physical and Human Geography , GC Leong (Oxford University press 3rd ed.) > Chapter 7: Arid or Desert Landforms > Sample Objective Ouestions > p. 75
  3. [3] Geography of India ,Majid Husain, (McGrawHill 9th ed.) > Chapter 6: Soils > 5. Desert Soils > p. 11
  4. [4] Certificate Physical and Human Geography , GC Leong (Oxford University press 3rd ed.) > Chapter 7: Arid or Desert Landforms > Landforms of Wind Deposition in Deserts > p. 72
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