Mt Everest

 

Mount Everest, Sanskrit and Nepali Sagarmatha, Tibetan Chomolungma, Chinese (Pinyin) Zhumulangma Feng or (Wade-Giles romanization) Chu-mu-lang-ma Feng, also spelled Qomolangma Feng, mountain on the crest of the Great Himalayas of southern Asia that lies on the border between Nepal and the Tibet Autonomous Region of China, at 27°59′ N 86°56′ E. Reaching an elevation of 29,032 feet (8,849 metres), Mount Everest is the highest mountain in the world.

New Zealander Edmund Hillary and Sherpa Tenzing Norgay were the first to summit Mount Everest in 1953. As of 2017, more than 7,600 people have reached the top of the mountain, and nearly 300 have perished in the attempt.

Physical features

Geology and relief

The Himalayan ranges were thrust upward by tectonic action as the Indian-Australian Plate moved northward from the south and was subducted (forced downward) under the Eurasian Plate following the collision of the two plates between about 40 and 50 million years ago. The Himalayas themselves started rising about 25 to 30 million years ago, and the Great Himalayas began to take their present form during the Pleistocene Epoch (about 2,600,000 to 11,700 years ago). Everest and its surrounding peaks are part of a large mountain massif that forms a focal point, or knot, of this tectonic action in the Great Himalayas. Information from global positioning instruments in place on Everest since the late 1990s indicates that the mountain continues to move a few inches to the northeast and rise a fraction of an inch each year.Everest is composed of multiple layers of rock folded back on themselves (nappes). Rock on the lower elevations of the mountain consists of metamorphic schists and gneisses, topped by igneous granites. Higher up are found sedimentary rocks of marine origin (remnants of the ancient floor of the Tethys Sea that closed after the collision of the two plates). Notable is the Yellow Band, a limestone formation that is prominently visible just below the summit pyramid.