The Qinghai-Tibet Plateau seismic belt includes the Hindu Kush Mountain Range, West Kunlun Mountain, Altun Mountain, Qilian Mountain, Helan-Liupanshan Mountain, Longmen Mountain, Himalayan Mountain and the vast plateau area east of West Kunlun Mountain.
The Qinghai-Tibet Plateau seismic belt includes all or part of Qinghai, Tibet, Xinjiang, Gansu, Ningxia, Sichuan and Yunnan. These provinces are close to the Himalayas and Hengduan Mountains, and the crustal movement is extremely frequent. According to statistics, there were 9 earthquakes of magnitude 8 or above and 78 earthquakes of magnitude 7-7.9, ranking first in China.
brief introduction
Geographically speaking, the earth has six plates, namely, the Pacific plate, the Eurasian plate, the African plate, the American plate, the Indian Ocean plate and the Antarctic plate. The junction of plates belongs to earthquake-prone area due to crustal movement. Qinghai Province is located at the intersection of the Indian Ocean plate and the Eurasian plate, and the north-south seismic belt in China is one of the areas with the most frequent earthquakes.
The Indian Ocean moves every year and collides with the Eurasian plate. Due to the collision and compression between continental plates, the crustal movement in the Qinghai-Tibet Plateau seismic belt is very active. The geological structure in Qinghai is very active. During the early orogeny, the Himalayas were severely squeezed and influenced by India and Eurasia plates, forming a geologically active fault zone in Qinghai.