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Q86 (CDS-II/2010) Geography › Indian Physical Geography › Indian geology and tectonics Answer Verified

What is the characteristic feature of Narmada Valley ?

Result
Your answer: —  Â·  Correct: B
Explanation

The Narmada Valley is characterized by its structural origin, specifically as a rift valley or graben. It was formed due to tectonic forces and block faulting rather than volcanic, glacial, or aeolian processes [t1]. Geologically, the valley is a linear lowland situated between the Vindhya and Satpura ranges, created by the subsidence of land between parallel faults [t1][t5]. This rift system, known as the Narmada-Son Lineament, resulted from vertical movements and tectonic reactivation of pre-existing fault zones during the Indian plate's northward movement [c2][c3][t6]. While the surrounding Deccan region experienced volcanic activity, the valley itself is a structural trench that has served as a locus for sedimentation over geological time [t2][t3]. The rigid peninsular block underwent displacement and faulting, making the Narmada a classic example of a fault-bound structural valley in India [c4][c5].

Sources

  1. [1] INDIA PHYSICAL ENVIRONMENT, Geography Class XI (NCERT 2025 ed.) > Chapter 2: Structure and Physiography > THE PENINSULAR BLOCK > p. 8
  2. [2] Physical Geography by PMF IAS, Manjunath Thamminidi, PMF IAS (1st ed.) > Chapter 9: Divergent Boundary > 9.1. Formation and Evolution of Rift Valleys, Rift Lakes, Seas, and Oceans > p. 128
  3. [3] Geography of India ,Majid Husain, (McGrawHill 9th ed.) > Chapter 2: Physiography > ORIGIN AND PHYSIOGRAPHY OF THE PENINSULAR INDIA > p. 48
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