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Difficulty: MediumPhysiography and Relief Features of India

Which of the following relief features of India is correctly matched with its dominant physiographic and geological characteristic?

  1. Bhabar belt – A narrow porous zone of pebble deposits along the Shiwalik break of slope where streams sink and flow underground.Answer
  2. B
    Terai region – An elevated arid tableland composed of ancient granitic rocks with extremely low groundwater retentivity.
  3. C
    Bhangar tracts – Low-lying fresh alluvial deposits formed annually along active river floodplains.
  4. D
    Deccan Traps – Folded sedimentary rock structures housing the major Gondwana coal seams of Peninsular India.

Answer

The Bhabar belt is correctly matched as a narrow porous zone of pebble deposits along the Shiwalik break of slope where streams sink and flow underground.
The Bhabar belt is a narrow zone (8 to 10 km wide) running parallel to the foothills of the Shiwalik range. It is composed of unsorted pebbles and boulders deposited by streams descending from the mountains. Due to the high porosity of these pebble beds, surface streams sink and flow underground.

Step-by-Step Solution

1
Examine the structural characteristics of the northern plain relief divisions from north to south.
As Himalayan rivers descend from the Shiwaliks, they deposit boulders and coarse pebbles forming the Bhabar belt (8-10 km wide). High porosity causes surface streams to disappear.
Coarse alluvial fans along mountain slopes create high permeability.
2
Analyze the features of Terai and Bhangar zones.
South of Bhabar lies the marshy, wet Terai zone where underground streams re-emerge. Bhangar is the older alluvium forming higher terraces away from river beds, distinct from Khadar.
Differentiating between wet marshland (Terai) vs. older floodplain terraces (Bhangar).
3
Evaluate the rock composition of the Deccan Traps.
Deccan Traps are basaltic lava landforms formed by volcanic activity, not folded Gondwana sedimentary rocks.
Peninsular shield geology distinguishes volcanic basaltic traps from coal-bearing Gondwana basins.

Key Concept

Physiographic relief divisions of the Northern Plains and Peninsular Plateau of India
Estimated Time:1m 0s
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Physiography and Relief Features of India

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