长江源地区通天河段水系格局演化与构造活动的关系

于洋,王先彦,李一泉,戴岩,鹿化煜

The evolution of drainage pattern and its relation to tectonic movement in the upstream Yangtze catchment

YU Yang,WANG Xianyan,LI Yiquan,DAI Yan,LU Huayu

图8 治多南至玉树北西—南东向古河流 (a. 北西—南东向宽谷与分水岭处谷地的分布反演的古河流(红线为古河流;白色圆点为c和d图沉积物观察点);b. 古河流纵向断面现代地形特征及河流袭夺点的分布;c、d. 拔河约30 m河流沉积物(c和d镜头分别朝向北东和北西))

Fig. 8 The reconstructed NW-trending ancient river in the area south of Zhiduo to Yushu (a. the NW-trending valleys and the ancient river based on the distribution of wind gaps, wide valleys, and fluvial sediments (red line is the ancient river); b. the longitudinal ancient river profile (A-B) and the distribution of the capture points; c and d: river sediment about 30 m above the present river level)