The Brahmaputra, Irrawady and Mekong rivers originate in Tibet and flow through narrow and parallel mountain ranges in their upper reaches. Of these rivers, Brahmaputra makes a U turn in its course to flow into India. This U turn is due to

examrobotsa's picture

Submitted by examrobotsa on

Q: 97 (IAS/2011)
The Brahmaputra, Irrawady and Mekong rivers originate in Tibet and flow through narrow and parallel mountain ranges in their upper reaches. Of these rivers, Brahmaputra makes a “U” turn in its course to flow into India. This “U” turn is due to

question_subject: 

Geography

question_exam: 

IAS

stats: 

0,120,123,24,120,21,78

keywords: 

{'young himalayas': [0, 0, 0, 1], 'mekong rivers': [0, 0, 0, 1], 'himalayan series': [0, 0, 0, 1], 'tibet': [1, 0, 0, 1], 'brahmaputra': [3, 0, 0, 0], 'mountain chains': [0, 0, 0, 1], 'tectonic disturbance': [0, 0, 0, 1], 'parallel mountain': [0, 0, 0, 2], 'rivers': [3, 2, 8, 8], 'india': [8, 1, 7, 13], 'irrawady': [0, 0, 0, 1]}

The "U" turn of Brahmaputra river is primarily due to the syntaxial bending of the geologically young Himalayas. The Himalayas are a result of the collision between the Indian and Eurasian plates. The Brahmaputra river flows from Tibet into India through a valley in the Himalayas, and then takes a sharp bend to the south-west before flowing into Assam. This bend is caused by the syntaxial bending of the Himalayas, where the mountain range changes direction abruptly due to the Indian plate continuing to move northward and pushing against the Himalayan range