成果归属作者：

李亚林 ; 王成善

成果归属机构：

青藏高原研究中心

作者：

Wang, Chengshan ; Zhao, Xixi ; Liu, Zhifei ; Lippert, Peter C. ; Graham, Stephan A. ; Coe, Robert S. ; Yi, Haisheng ; Zhu, Lidong ; Liu, Shun ; Li, Yalin

单位：

China Univ Geosci, Res Ctr Tibetan Plateau Geol, State Key Lab Geol Proc & Mineral Resources, Beijing 100083, Peoples R China;China Univ Geosci, Sch Geosci, Beijing 100083, Peoples R China;Univ Calif Santa Cruz, Dept Earth & Planetary Sci, Santa Cruz, CA 95064 USA;Univ Calif Santa Cruz, Inst Geophys & Planetary Phys, Santa Cruz, CA 95064 USA;Tongji Univ, Lab Marine Geol, Shanghai 200092, Peoples R China;Stanford Univ, Dept Geol & Environm Sci, Stanford, CA 94305 USA;Chengdu Univ Technol, Sch Geosci, Chengdu 610059, Peoples R China

关键词：

climate; tectonics; magnetostratigraphy; Hoh Xil Basin; cenozoic

摘要：

The surface uplift history of the Tibetan Plateau and Himalaya is among the most interesting topics in geosciences because of its effect on regional and global climate during Cenozoic time, its influence on monsoon intensity, and its reflection of the dynamics of continental plateaus. Models of plateau growth vary in time, from pre-India-Asia collision (e.g., approximate to 100 Ma ago) to gradual uplift after the India-Asia collision (e.g., approximate to 55 Ma ago) and to more recent abrupt uplift (<7 Ma ago), and vary in space, from northward stepwise growth of topography to simultaneous surface uplift across the plateau. Here, we improve that understanding by presenting geologic and geophysical data from north-central Tibet, including magnetostratigraphy, sedimentology, paleocurrent measurements, and Ar-40/Ar-39 and fission-track studies, to show that the central plateau was elevated by 40 Ma ago. Regions south and north of the central plateau gained elevation significantly later. During Eocene time, the northern boundary of the protoplateau was in the region of the Tanggula Shan. Elevation gain started in pre-Eocene time in the Lhasa and Qiangtang terranes and expanded throughout the Neogene toward its present southern and northern margins in the Himalaya and Qilian Shan.

语种：

英文

DOI：

10.1073/pnas.0703595105

来源：

PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,2008(13):4987-4992.

出版日期：

2008-04-01

提交日期：

2017-12-14

引用参考：

Wang, Chengshan; Zhao, Xixi; Liu, Zhifei; Lippert, Peter C.; Graham, Stephan A.; Coe, Robert S.; Yi, Haisheng; Zhu, Lidong; Liu, Shun; Li, Yalin. Constraints on the early uplift history of the Tibetan Plateau[J]. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,2008(13):4987-4992.