How were the Alps and the Andes mountains formed?

Alps, just like Himalayas, was formed by collision of tectonic plates. They were formed over a process stretching 10's of millions of years (common time scale for geological event) due to collision of African And European plate. read more

Believe it or not, the Alps and the Himalayas were formed at the same time, through the same process, the collision of the Eurasian and African tectonic plates, or the supercontinents of Gondwana and Laurasia, sometime in the Cretaceous Period [149-66 million years ago]. read more

The Andes Mountains were formed from volcanism and uplift created by the collision of the Nazca plate with the South American plate. read more

The Alps form part of a Cenozoic orogenic belt of mountain chains, called the Alpide belt, that stretches through southern Europe and Asia from the Atlantic all the way to the Himalayas. This belt of mountain chains was formed during the Alpine orogeny. read more