本文通过野外观察到的地质现象,认为燕山中晚期运动和喜马拉雅早期运动在西藏地区都有表现。前者在藏北表现较强烈,形成该次运动的主旋回,而后者在藏南,特别是在雅鲁藏布江沿岸及其北的拉萨地区活动强烈,构成这次运动的主旋回。 Through the geological phenomena observed in the field, this paper argues that the middle-late Yanshanian movement and the early Himalayan movement all have their performance in Tibet. The former performed more strongly in northern Tibet and formed the main cycle of the movement, while the latter was active in southern Tibet, especially along the Brahmaputra and its northern part of Lhasa, forming the main cycle of the movement.