关键词: 青藏高原, 大地构造复合体, 碰撞拼合, 左行走滑

Abstract: Paleomagnetic results from the both sides of Honghe fault zone have shown that the Yangzi block has been united with the Qiangtang terrane since Cretaceous. The Qinghai-Tibet Plateau was a tectonic composite consisting of four terranes named Kunlun, Qiangtang, Lhase and Himalayans from north to south. These terranes were the component parts of Laurasian, Cathaysia and Gondwana, respectively, in Late Paleozoic, having different history of development. The collision and matching of the Lhase terrane with the Qiangtang terrane have caused the formation of the tectonic framework of Eurasian plate. On the other hand, the collision and matching of himalayan terrane and Indian plate have given rise to the uplifting of Qinghai-Tibet Plateau, which caused sinistral strike-slip movement of the blocks of Eurasian plate along the pre-existing faults. This process continued till now.

Key words: Qinghai-Tibet Plateau, Tectonic composite, Collision and matching Sinistral strike-slip