How did mt.everest form?

Answer 1

There is an excellent discussion of the formation of Tibet and Mt. Everest on this page: http://www.pbs.org/wgbh/nova/everest/earth/birth.html It was formed from the uplifting of the earth as the Indian and Asian plates collided. I suppose you could see some of the difference between volcanic vs uplifting formation of mountains if you compared the Cascade Range to the Rocky Mountain Range in the USA. The Cascades are primarily formed of volcanic mountains including the giant cauldron of Crater Lake and the very active Mt. St. Helens. You will see very course volcanic lava and large volcanic ash deposits. Comparing those mountains to the Rocky Mountain Range which is primarily formed of granite, formed by an uplifting process.

Answer 2

Mount Everest was formed through the collision of the Indian and Eurasian tectonic plates, resulting in the uplift of the Himalayan mountain range. Over millions of years, the forces of plate tectonics and erosion shaped Everest into the highest peak on Earth.