横断山区系指青、藏、川、滇四省交界处南北向山脉的总称。因横隔东西间交通故名。这里岭谷相间。山岭自西而东有:伯舒拉岭(南延为高黎贡山)、怒山、宁静山(南延为云岭)、沙鲁里山、大雪山等。岭脊多出露花岗岩类及变质岩类。河流深切形成峡谷,有怒江、澜沧江、金沙江、雅砻江等流贯,峡谷地带大多有基性、超基性岩密集分布,实际上是一系列深断裂发育地带。 Hengduan Mountains refers to the green, Tibetan, Sichuan and Yunnan provinces at the junction of the north-south mountains collectively. Because of the traffic between the east and west traffic name. Here Ling Valley and white. Mountains from west to east: Besura ridge (South extension for the Gaoligongshan), Nu Mountain, quiet mountain (south extension to Yun Ling), Shaluli Hill, Snowy Mountains and so on. Ridge more exposed granite and metamorphic rocks. The river forms a deep canyon. There are the Nujiang River, the Lancang River, the Jinsha River and the Yalong River. Most of the canyon belts have basic and ultrabasic rocks intensively distributed, and are actually a series of deep fault development zones.