Geography • Indian GeographyHard
The 'Brahmaputra Valley' in Assam is structurally formed as which type of geological depression, bounded by the Himalayas to the north and the Shillong Plateau to the south?
A. Rift valley
B. Foredeep basin✓ Correct Answer
C. Impact crater basin
D. Volcanic caldera
💡 Solution & Explanation
The Brahmaputra Valley in Assam is a classic foredeep basin formed by tectonic downwarping between the advancing Himalayan thrust system and the stable Indian shield. Rift valleys involve extensional faulting, which contrasts with the compressional tectonic setting of a foreland basin. Thick alluvial deposits carried by the river system fill this depression over geological time.
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