INDIAN GEOGRAPHY

Detailed explanation-1: -Statement 1 is correct: Shiwalik is the outermost range of the Himalayas.It extends over a width of 10-50 Km and has an altitude varying between 900 and 1100 metres. Statement 2 is correct: Shiwalik is composed of unconsolidated sediments brought down by rivers from the main Himalayan ranges located farther north.

Detailed explanation-2: -Geologically, the Sivalik Hills belong to the Tertiary deposits of the outer Himalayas. They are chiefly composed of sandstone and conglomerate rock formations, which are the solidified detritus of the Himalayas to their north; they are poorly consolidated.

Detailed explanation-3: -Complete answer: The Shiwalik range is the outermost range of the Himalayas and the Shivalik Hills also known as Churia Hills. This range stretched from the Indus river to the Brahmaputra river which spans across the northern part of the Indian subcontinent.

Detailed explanation-4: -The Siwalik Group is a thick sedimentary sequence forming the youngest mountain belt, extending throughout the East-West of the foothills of the Himalayas, and is separated from the Lesser Himalaya to the north by the Main Boundary Thrust, and the Indo-Gangetic Plain to the south by the Himalayan Frontal Thrust.

Detailed explanation-5: -(iii) The outermost range of the Himalayas is called the Shiwaliks. They extend over a width of 10-50 km and have an altitude varying between 900 and 1100 meters. These ranges are composed of unconsolidated sediments brought down by rivers from the main Himalayan range located farther north.