Orogeny is a mountain-building process that takes place at a convergent plate margin when plate motion compresses the margin. An orogenic belt or orogen develops as the compressed plate crumples and i
An example of thin-skinned deformation (thrust faulting) of the Sevier Orogeny in Montana. The white Madison Limestone is repeated, with one example in the foreground (that pinches out with distance) and another to the upper right corner and top of the picture.
Sierra Nevada Mountains (a result of delamination) as seen from the International Space Station
Mount Rundle, Banff, Alberta
The Himalayas, or Himalaya, is a mountain range in Asia separating the plains of the Indian subcontinent from the Tibetan Plateau. The range has some of the highest peaks on Earth, including the highe
Orogeny
…the opposite side of the subducting oceanic plate arriving at the subduction zone. This ends subduction and transforms the accretional orogen into a Himalayan-type collisional orogen. The collisional orogeny may produce extremely high mountains, as has been taking place in the Himalayas for the last 65 million…
Mount Everest and surrounding peaks as seen from the north-northwest over the Tibetan Plateau. Four eight-thousanders can be seen, Makalu (8,462 m), Everest (8,848 m), Cho Oyu (8,201 m), and Lhotse (8,516 m).
Panoramic view of the Himalayas from Poon Hill in Nepal during sunrise, showing the Dhaulagiri massif (left, shining with alpenglow) and the Annapurna massif (right, with the sun rising from behind). Dhaulagiri and Annapurna, the highest peaks of these massifs, are respectively the seventh and tenth highest mountains in the world, and are two of the world's fourteen eight-thousanders.
Panorama of the Garhwal and Kumaon Himalayas from Ranikhet, India, showing peaks such as Trisul, Nanda Devi, Nanda Kot and Panchachuli. Nanda Devi is the highest mountain located entirely within India's borders, and the second highest mountain in India after Kangchenjunga (which is the world's third highest and is located along the Indo-Nepalese border).
The movement of the Indian plate toward the Eurasian plate starting 71 million years ago at the average speed of 5–15 centimetres (2.0–5.9 in) per year, which closed the Neo-Tethys Ocean above and opened the Indian Ocean below