喜马拉雅是一条年轻的山脉,它以席状逆冲断裂、褶皱、推覆体以及广泛地震活动和大浅源地震为特征,它对研究大陆会聚的互相作用和造山机制是一个合适地区。根据印度洋地磁异常而复原的印度洋和欧亚板块的运动表明,两个板块的快速会聚(约100—180毫米/年)发生在晚白垩世与晚始新世—早渐新世期间,以后会聚速率较慢(约50毫米/年)(Molnar 和 Tapponnier,1975)。喜 The Himalayas, a young mountain range characterized by mantle thrusts, folds, nappe and extensive seismic activity and large shallow earthquakes, are a suitable area for studying the convergence of the continents and the orogenic mechanisms. The movement of the Indian Ocean and the Eurasian plate recovered from the Indian Ocean geomagnetic anomaly shows that the rapid convergence of the two plates (about 100-180 mm / yr) occurred during Late Cretaceous and Late Eocene-Early Oligocene convergence Slower (about 50 mm / year) (Molnar and Tapponnier, 1975). like