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黄河上游地貌和新生代地层研究表明,30～3.4Ma是一个构造长期稳定、气候炎热和红色盆地广泛发育的时期,形成分布很广的夷平面,即青藏高原的主夷平面,上有风化壳及古岩溶残留。3.4Ma开始,青藏高原整体抬升,主夷平面被分割、解体,盆地中红色碎屑建造强烈变形,开始以扇砾岩为主的内陆磨拉石沉积。其后,在2.5Ma和1.7～1.66Ma相继发生强烈隆升,青藏高原地貌总轮廓形成,黄河现代水系格局出现,总称之为青藏运动(A,B,C三幕)。随后,黄河及其支流发育一系列阶地,记录了青藏高原阶段性隆升及黄河溯源侵蚀的全过程。
The study on the topography and the Cenozoic strata in the upper reaches of the Yellow River shows that the period of 30 ~ 3.4Ma is a period of long-term stability, hot climate and extensive development of the red basin, forming a broadly distributed barb level, that is, the main level of the Qinghai-Tibet Plateau with weathering crust And ancient karst residue. 3.4Ma, the Qinghai-Tibet Plateau as a whole is uplifted, the main plane is divided and disintegrated, and the red crust in the basin was strongly deformed and inlaid molasse dominated by fan-conglomerate began to be deposited. Afterwards, the strong uplift took place successively at 2.5Ma and 1.7 ~ 1.66Ma. The total contour of the Qinghai-Tibet Plateau was formed, and the pattern of modern water system in the Yellow River appeared. It was generally called the Qinghai-Tibet movement (A, B and C). Subsequently, the Yellow River and its tributaries developed a series of terraces, recording the entire process of the uplift of the Qinghai-Tibet Plateau and the traceability of the Yellow River.