East-West Extent 2,400 km (3,200 km if the Indus plains are included) Average width:150-300km 1.Largest alluvial tract of the world, extending from the mouth of Indus to the mouth of Ganga between Peninsular plateau and the northern are of the mountains. 2. Alluvial in nature, and are composed of Bhangar (old alluvium), Khadar (new alluvium) in river bed. Bhabar (porous gravel ridden plains at the foot of Himalaya) and Terai (damp thickly forest area, where bhabar stream reappears) SUBDIVISION OF GREAT PLAINS THE RAJASTHAN PLAIN Extent:650km long. Average width:250-300 km wide Thar or Great Indian Desert is the westernmost region of Great Indian Plains in the western Rajasthan. A semi arid plain, lying to the east of Thar desert is known as Rajasthan Bagar. The Luni is the only southwest flowing rivers of this region. The Sambhar(largest), the Kuchaman, and the Didwana are important lakes situated to the north of Luni Basin.
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