Question

Why is northern plains are called depositional plains?

Answer 1

Northern plains have been formed by the regular deposition of three rivers and their respective tributaries i.e. Indus, Ganga and Brahmaputra. Their depositions resulted in huge alluvium reserves in the soil since long back which thus formed now the fertile Northern plains.

Answer 2

The Northern Plain was formed by the deposits brought in by the three major rivers and their tributaries. Alluvium was deposited at the foot–hills of the Himalayas for millions of years. These deposits are now the fertile Northern Plains. Alluvium is soil or sediments deposited by a river or other running water.