地质通报Issue(1)：83-103,21.
金沙江“长江第一湾”段河谷地貌、沉积与发育
Landscapes and sediments of the‘Yangtze First Bend’valley along the Jinsha River and development of the valley
摘要
Abstract
The First Bend of the Yangtze River refers to a segment of incised valleys in the upper reaches of the Jinsha River where the river makes a 135° turn from SSE to NNE. This segment is located on the southeast margin of the Tibetan Plateau, that is, the transition zone from the Tibetan Plateau to the Yunnan-Guizhou Plateau. According to the geomorphic and sedimentary characteris⁃tics of valleys, it can be divided into three sectors:the Qizong-Xialuoyu sector, the Tiger Leaping Gorge sector, and the Daju Basin sector. Their landforms and Quaternary sedimentary characteristics are described in detail in this paper. The origins and formation ag⁃es of alluvial sediments, lacustrine sediments, and glacial and glaciofluvial sediments in these sectors, especially 150~250m thick bur⁃ied sediments, are also discussed on the basis of isotopic ages and related analytical data. The development of the Jinsha River valleys and the uplift of the Tibetan Plateau since the Miocene are also discussed.关键词
金沙江/长江第一湾/地貌/沉积/河谷发育/青藏高原隆升Key words
Jinsha River/the First Bend of the Yangtze River/landform/sediments/development of valleys/uplift of the Tibetan Plateau分类
天文与地球科学引用本文复制引用
赵希涛,吴中海,冯玉勇,张永双,胡道功,曲永新,郭长宝..金沙江“长江第一湾”段河谷地貌、沉积与发育[J].地质通报,2015,(1):83-103,21.基金项目
中国地质调查局项目（编号1212011120163、12120114002101）、基本科研业务费项目（编号DZLXJK201410）和国家自然科学基金项目 （）
