Question

what causes the f
ormation of the northern plains​

Answer 1

Answer:

northern plains were formed by the sediments brought in by three major Himalayan river ( ganga ,indus , Brahmaputra) and their tributaries.

when these river flowed through the Himalayas they eroded rocks transported and deposited the smaller fragments of rocks in the foothills of the himalayas.

Answer 2

Answer:

The northern plains are formed of alluvial deposits.

The northern plains have been formed by the interplay of the three major river systems the Indus, the Ganga and the Brahmaputra along with their tributaries. The Himalayan uplift out of the Tethy's sea and subsidence of the northern flank of the Peninsular plateau resulted in the formation of a large basin.

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