Question

Give difference between young fold mountains and old fold mountains.​

Answer 1

Young Mountain Belts are less than 100 million years old). These are belts of high, fold mountains and valleys, major fault-block ranges, rift valleys, volcanic mountain complexes and island arcs, all arranged in sub parallel chains of mountains (cordilleran belts), provide structural landform of moderate to great relief, slope and irregularities, commonly in linear arrangements.

Old Mountain Belts are 100 to 500 million years old. These are former cordilleran belts now upraised or exhumed by block faulting, epeirogenic uplift, or tilting and accentuated by fresh volcanism. Further relief and many characteristic features are provided by acceleration of erosional agents, strongly controlled by fracture and joint patterns, differential erosion, and intrusive volcanics. They provide structural landform of low to moderate relief, slope and irregularity, commonly of linear or geometric arrangement

Answer 2

$\huge\underline\mathcal\pink{HOLA!!!}$

Young mountains, created several dozen million years ago, have steep slopes and high-pointed peaks. The youngest mountains, also the highest in the world, are within the Himalayas massif in Asia. Old mountains, in contrast, have rounded peaks and slopes made gentler by hundreds of millions of years of erosion.