consists mainly of old mud, new mud and marsh. In the delta region, the uplands are called ‘ Chars ’ while the marshy areas are called ‘ Bils ’. On the basis of deposition of sediments by various rivers and topographical characteristics, the Northern Plains of India are divided into the following four major regions: ) Rajasthan Plains: It is located to the west of Aravalli Range. It covers an area of about , , sq.km.
Rajasthan plain is formed by the deposition of the river Luni and the long vanished river Saraswathi. There are several salt lakes in Rajasthan. The Sambhar salt lake (Pushkar Lake) near Jaipur is the prominent one. The Thar desert, also known as the Great Indian desert is a large arid region in the north western part of the Indian subcontinent that covers an area of , , km and forms a natural boundary between India and Pakistan.
It is the world’s th largest desert. The desert lies in the western part of the Aravalli Range and covers / of Rajasthan state. There are two major divisions in the Thar desert. They are known as the actual desert region (Marusthali) and the semi desert region (Bhangar).
Many different types of sand dunes and salt lakes (Dhands) are seen here. The Great Northern Plains This fertile plain lies to the south of the Northern Mountains. This plain is one of the most extensive stretches of the alluvium in the world and is deposited by the rivers Indus, Ganga, Brahmaputra and their tributaries. The length of the plain is about , km and the width varies from to km.
Its width increases from east to west. It covers an area of over lakh sq.km. The Great Plains of India is remarkably a homogeneous surface with an imperceptible slope. They are formed mostly by the depositional processes of the Himalayan and Vindhyan rivers.
These rivers deposit enormous quantity of sediments deposited along the foothills and flood plains. The important characteristics features of sediment deposition in the plains areas as follows. a) The Bhabar Plain This