藏南特提斯域内伸展运动和伸展作用非常普遍 ,根据构造变形分析和伸展不整合、沉积岩相、古地理再造及岩相对比方法 ,对藏南海西期以来的伸展构造进行了较为系统的厘定 ,确定了海西期、印支期、早燕山期的主动伸展运动和晚燕山期和喜山期的被动伸展作用 ,并对这些运动特征进行了探讨 The extensional movement and extension are very common in the possession of the South Tethys. Based on the tectonic deformation analysis and extensional unconformity, sedimentary facies, palaeogeographic reworking and facies correlation, the extensional tectonics since the western Tibetan Plateau have been systematically determined , The active extensional movement in the Hercynian, Indosinian and early Yanshanian periods and the passive extensional effect in the Late Yanshanian and the Himalayan Periods were identified, and the characteristics of these movements were also discussed