青藏高原北缘的隆升时期：来自阿尔金山和柴达木盆地的证据

he analysis of sedimentary characteristics of Shangyoushashan and Xiayouyashan Formations and the features of seismic reflection in the western Qaidam basin suggest that the Altyn Mountains were uplifted during the Mid-Late Miocene, which resulted in an eastward transferring of the basin depocenter. Uplifting chronological data from the surrounding mountains also indicate that the uplifting of the north Qinghai-Xizang Plateauwas coincident with the regional tectonic events of the south Qinghai-Xizang Plateau during the Mid-Late Miocene. Additionally，it demonstrates that the Mid-Late Miocene is the important period that the Qinghai-Tibetan Plateau grew towards the north. The uplift event of the Altyn Mountains was related to the wedging of the Tarim Plate underneath the Qaidam Plate directly. The plateau uplifting dynamic was derived from the India Plate continuing subduction towards the north after its collision with Eurasia continent. The process was closely related to the formation of the Main Boundary Fault in front of the Himalaya.