The second mountain range is older. i know this because older mountain ranges are more rounded due to erosion over hundreds of millions of years. young mountain ranges have steep slopes and higher peaks because they have not had as much erosion as the older ones.
im not the best at explaining stuff but i hope this helps(:
Fold mountains are created where two of Earth's tectonic plates are pushed together. ... Young and Old, High and Low ... The crust beneath the Himalaya, the most towering mountain range on Earth,
