关键词: 青藏高原, 隆升过程, 隆升高度, 叶城剖面, 磨拉石

Abstract: Comparative analysis of the Yecheng seciton at north piedmont of the Kunlun Mountain, and the Surai Khola section at south piedmont of the Himalayan Mountain, suggests that the Qinghai-Tibet plateau is dominated by continuous uplift over the past 10 million years, and the effective time scale for dividing the entire plateau uplift processes is 1 Ma or more. The entire process of the entire plateau can be divided into three stages based on sediment facies and deposit ratio, namely slow uplift stages between 10.0~6.0 Ma BP; transitional uplift stage between 6.0~2.5 Ma BP (including medium-velocity uplift of the south part of the plateau and low-velocity uplift of the north part of the plateau during 6.0~4.6 Ma BP; medium-velocity uplift of the south part of the plateau and high-velocity uplift of the north partole the plateau during 3.5~2.5 Ma BP), and the high-velocity uplift stage after 2.5 Ma BP. The uplift elevation of the entire plateau exceeded 2 000 m above sea level maybe by 4.6 Ma BP and exceeded 3 000 m above sea level by 2.5 Ma BP.

Key words: Qinghai-Tibet Plateau, uplift processes, height above sea level, Yecheng section, molasse