Vast Paleo-Lakes, Planation Surface and Topographic Evolution of the Tibetan Plateau
详细信息
- 责任者：Wu Zhenhan (Institute of Geomechanics ; Chinese Academy of Geological Sciences ; Beijing 100081 ; China) ; Wu Zhonghai
- 刊名：Geoscience
- 出版年：2009
- 卷期：23(6)
- 关键词：新生代 ; Cenozoic ; 湖泊地貌 ; lacustrine features ; 夷平面 ; planation surfaces ; 青藏高原 ; Qinghai-Tibetan Plateau
- 页码：p.993-1002
- 图表：7 illus., 3 tables, 33 refs.
- 分类号：1400
- issnNo：ISSN1000-8527
- isbnNo：CN11-2035/P
摘要
The Tibetan Plateau isostatically uplifted after contractional shortening and crustal thickening in Paleogene and is dominated by strike-slip and extension in Late Cenozoic. Very vast lakes formed in Early Miocene and Late Pleistocene in central Tibetan Plateau respectively, and large paleo-lakes formed in Pliocene and Early Pleistocene alternatively in northern and eastern Tibetan Plateau. Level of vast lakes had been base surface for incision in Early Miocene from (24.1±0. 6) Ma to (14.5±0.5) Ma, and lakes and top lacustrine deposits of Wudaoliang Group became base surface for erosion and peneplanation since Late Miocene, which formed plantation surface or peneplain of the Tibetan Plateau.