Uplift processes for the Qinghai-Tibet Plateau: A comparative study of Yecheng section and Siwalik group  

作　　者：LI Xiaoze DONG Guangrong CHEN Huizhong ZHENG Hongbo JIN Heling 

机构地区：[1]Laboratory of Blown Sand Physics and Desert Environment,Cold and Arid Regions Environmental and Engineering Research Institute,Lanzhou 730000,China [2]MOE Key Laboratory of Marine Geology,Tongji University,Shanghai 200092,China [3]Xi’an Open Laboratory of Loess and Quaternary Geology,Chinese Academy of Sciences,Xi’an 710054,China

出　　处：《Chinese Science Bulletin》2001年第S1期108-113,共6页

基　　金：This work was supported by the National Natural Science Foundation of China (Grant No. 49802016) ; the opening foundation of Shapotou Desert Research & Experiment Station, CAS (Grant No. 200009); the National Key Basic Research Development Plan (Grant

摘　　要：Comparative studies of the Yecheng section at the northern piedmont of the Kunlun Mountain, and the Surai Khola section at the southern piedmont of the Himalayan Mountain, indicates that the Qinghai-Tibet Plateau is dominated by continuous uplift over the past 10 Ma. And the effective time scale for dividing the uplift stages would be 1 Ma. The uplift processes of the entire plateau can be divided mainly into three stages, i.e., a slow uplift stage (10.0-6.0 MaBP), a transitional uplift stage (6.0-2.5 MaBP) and a rapid uplift stage (since 2.5 MaBP). The plateau might have risen to 2000 m above sea level by 4.6 MaBP in response to uplift and to more than 3000 m by 2.5 MaBP.Comparative studies of the Yecheng section at the northern piedmont of the Kunlun Mountain, and the Surai Khola section at the southern piedmont of the Himalayan Mountain, indicates that the Qinghai-Tibet Plateau is dominated by continuous uplift over the past 10 Ma. And the effective time scale for dividing the uplift stages would be 1 Ma. The uplift processes of the entire plateau can be divided mainly into three stages, i.e., a slow uplift stage (10.0—6.0 MaBP), a transitional uplift stage (6.0—2.5 MaBP) and a rapid uplift stage (since 2.5 MaBP). The plateau might have risen to 2000 m above sea level by 4.6 MaBP in response to uplift and to more than 3000 m by 2.5 MaBP.

关 键 词：climate change TECTONIC UPLIFT Qinghai-Tibet PLATEAU QUATERNARY Cenozoic. 

分 类 号：P531[天文地球—古生物学与地层学]