Question

State two chief differences between old and young fold mountains. Give examples.

Answer 1

The mountains, which were formed over 250 million years ago due to compression of the earth’s crust, are called old fold mountains. They have gentle slopes and low altitudes due to weathering over time eg. The Urals in Russia, the Aravallis in India, and the Appalachians in India.
The recently formed mountains, i.e., about 25 million years ago, are called young fold mountains. They are rugged and lofty. They comprise the world’s highest mountain ranges.
E.g., the Rockies of North America, the Alps, the Andes, the Himalayas, and The Great Dividing Range.