关于黄河贯通三门峡的时代

黄河的发育是晚新生代东亚构造地貌演化和环境变迁的重大事件.从整体上看,黄河只有贯通晋豫间的三门峡,东流入海,才称得上黄河干流的最终形成.三门峡是研究和探讨黄河形成、演化的关键部位之一.根据古三门湖消亡与邙山晚更新世黄土沉积速率突然增大揭示的重大环境突变事件,黄河大约于150 kaB.P.前后贯通三门峡东流入海,现代黄河水系最终形成. 

THE AGE OF THE YELLOW RIVER PASSING THROUGH THE SANMEN GORGE

The development of the Yellow River was one of the major events of Late Cenozoic tectonogeomorphologic and environmental evolution in East Asia. Only by passing through the Sanmen Gorge between Shanxi and Henan and flowing into the sea, was the main stream of the Yellow River formed eventually. Therefore, the Sanmen Gorge is one of the crucial sites for the study and discussion of the formation and evolution of the Yellow River. On the basis of the important events of environmental sudden change revealed by the extinction of the Sanmen paleolake and abrupt change in sedimentation rate of the late Pleistocene loess at Mangshan, it is inferred that the Yellow River passed through the Sanmen Gorge and flowed into the sea about 150 kaB. P., and then the modem Yellow River drainage system formed eventually.