Question

Which is the Oldest Mountain chain in India?
1. Himalayas
2. Aravallis
3. Garo Hills
4. Nilgiri

Answer 1

Correct Answer - Option 2 : Aravallis

 Aravalli:

• The Aravalli Range is the oldest fold mountain in India.
• It runs across Gujarat, Rajasthan, Haryana & Delhi.
• The highest Peak of the Aravali range is found in Gurushikhar, Mt Abu (Rajasthan).​

Thus, Aravalli is the Oldest Mountain chain in India.

Himalaya:

• The Himalayas are the youngest mountain chain in the world.
• Himalayan mountains have come out of a great geosyncline called the Tethys Sea and that the uplift has taken place in different phases.
• The third geological division of India comprises the plains formed by the river Indus, the Ganga and the Brahmaputra.
• Originally, it was a geo-synclinal depression that attained its maximum development during the third phase of the Himalayan mountain formation approximately about 64 million years ago.
• The relief and physiography of India have been greatly influenced by the geological and geomorphological processes active in the Indian subcontinent.

​Garo Hills:

• It is the part of the Garo- Khasi range in Meghalaya, India.
• The range is part of the Meghalaya Subtropical forest ecoregion. The Garo's call themselves A.chik (locally used).
• Nokrek Peak is the highest peak of Garo hills.

Nilgiri Mountain:

• The Nilgiri Hills, which are at the junction of the Eastern and the Western ghats.
• It has its highest peak at Doddabetta peak with an elevation of 2637 meters.
• Nilgiri Hills, mountainous region of Tamil Nadu state, southeastern India.
• The hills are located at the tri-junction of the states Karnataka, Kerela and Tamil Nadu.
• These mountains are named after the Neelakurunji flowers (purplish-blue flowers) found in Shola forests of Nilgiri hills.