Geology of Himalayas - Ranges And Origin, Mountain Building, Seismic Activity
world everest climbers mountains
Early mountaineers from India named the Himalayas "snow abode" based on two Sanskrit words hima and laya. These early climbers were attracted to the mountains by the same features that, today, challenge climbers from all over the world. The range includes the highest peaks in the world, notably Mount Everest; glaciated valleys and snow that never melts create unsurpassable vistas; and the scenery and dangers inspire myths and religious contemplation.
The range is 1,550 mi (2,500 km) long from west to east, and it encompasses all of Nepal and Bhutan and parts of Afghanistan, India, Pakistan, and China. The north-south width varies from 125-250 mi (200-400 km), and they cover 229,500 sq mi (594,400 sq km) of Earth's area. In height, the range rises to the top of Everest at 29,028 ft (8,848 m); much of the area is at an elevation of 2.5 mi (4 km) above sea level. The Himalayan Mountains are actually part of a band of ranges that cross the globe from North Africa to Asia's Pacific Coast. They are bordered by the Karakoram and Hindu Kush ranges as well as the high Tibetan Plateau.
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The Himalayas are also made up of four distinct ranges. The northernmost Trans-Himalayas, the Greater or Tibetan Himalayas, the Lesser or Lower Himalayas, and the southernmost Outer Himalayas parallel each other in long belts from west to east. Each has a different geologic history depending on how, where, and when (in geologic time) the tremendous plates that make up Earth's crust collided…
As India pushed relentlessly toward Eurasia, the Tethys Trench was compressed, folded, and faulted. The base of the trench consisted of sedimentary rocks that were weak to begin with. When they were broken by the colliding plates, weaknesses in these overlying materials allowed basalt and granite to intrude upward from Earth's underlying mantle. These materials were fresh and hard; when the…
The northeastern end of the Gangetic Plain has experienced four "great" earthquakes with a Richter magnitude exceeding 8.0 in the past 100 years, beginning with the Assam earthquake in 1897. Over 30,000 people perished in these quakes. The origin of the earthquakes is the same tectonic, plate-moving action that welded the Indian subcontinent to Eurasia and formed the Himalayan Mounta…
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User Comments
about 1 year ago
hima+laya is wrong..........its
him(ice)+ alaya(house)=HIMALAYA