Which region of the Northern Plains is made of older alluvium?

Correct option is A

The correct answer is: (A) Bhangar

Explanation:

• Bhangar refers to the older alluvium found in the Northern Plains of India.
• It is composed of sediments deposited in the middle Pleistocene period and lies above the floodplain of the river.
• Bhangar soils are generally less fertile, have higher kankar (lime nodules) content, and are elevated terraces.

Information Booster:

• Bhangar is found at a higher elevation than Khadar.
• It is not renewed annually by floods.
• These areas may appear reddish due to iron oxides.
• Bhangar is common in Punjab, Haryana, and parts of Uttar Pradesh.
• It is often less suitable for intensive farming compared to Khadar.

Additional Information:

• Bhabar: Region of coarse alluvium at the foothills of the Himalayas; very porous.
• Khadar: Newer alluvium deposited by rivers annually; more fertile than Bhangar.
• Terai: Marshy and swampy region located south of Bhabar; rich in vegetation and groundwater.