Correct Answer - Option 3 : Andes mountain
The correct answer is Andes mountain.
- Fold mountains are mountains formed from the folding of the earth's crust.
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They are formed when two plates move together (a compressional plate margin).
- It can be where two continental plates move towards each other or a continental and an oceanic plate.
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Fold mountains are usually formed from sedimentary rocks and are usually found along the edges of continents.
- It is because the thickest deposits of sedimentary rock generally accumulate along the edges of continents.
- There are two types of fold mountains:
- Young fold mountains: Mountains having age between 10 to 25 million years like Rockies, Andes, Alps and Himalayas.
- Old fold mountains: Mountains having age over 200 million years of age like Urals and Appalachians of the USA.
- In India:
- Aravalli - Old Fold as well as Residual mountains.
- Himalaya - New Fold mountains.
- Western Ghats - Block as well as Residual Mountains.
