论文部分内容阅读
在多次的野外考察和充分的室内分析的基础上，对金沙江地区河谷层状地貌系列和断陷盆地相关沉积进行了分析，系统地研究了金沙江自晚新生代以来的形成和演化。晚新生代金沙江水系的形成和演化经历了四个阶段：①３．４０ＭａＢ．Ｐ之前，为高原面形成期间的古水系阶段；②３．４０～２．００±０．２０ＭａＢ．Ｐ，为金沙江水系孕育阶段；③２．００±０．２０～１．５４±０．１７８ＭａＢ．Ｐ，为金沙江水系调整阶段；④１．５４±０．１７８ＭａＢ．Ｐ以来为现代金沙江水系形成与发展阶段
On the basis of many field investigations and full indoor analyzes, the related sediments of stratiform series and fault basins in the Jinsha River are analyzed, and the formation and evolution of the Jinsha River since late-Cenozoic are systematically studied. The formation and evolution of the Late Cenozoic Jinsha River experienced four stages: ①3.40MaB. Before P, the Paleogene stage during the plateau formation; 3.40 ~ 2.00 ± 0.20MaB. P, for the Jinsha River watering period; ③2.00 ± 0.20 ~ 1.54 ± 0.178MaB. P, for the Jinsha River adjustment phase; ④ 1.54 ± 0.178MaB. P since modern Jinsha River system formation and development stage