 This hypothesis is mainly based on the observation of lithostratigraphic patterns within and around the Yarlung-Zangbo suture zone (YZSZ).The YZSZ itself consists of ophiolite and basaltic to andesitic volcanic rocks, which is comparable to typical rock suites in an island arc subduction system.The north of the YZSZ is the Lhasa terrane of the Tibetan Plateau, while the south of the YZSZ is the Indian superterrane.