Advances in Earth Science ›› 2020, Vol. 35 ›› Issue (4): 404-413. doi: 10.11867/j.issn.1001-8166.2020.034

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Research and Understanding of the Evolution of the Yellow River Valley in Lanzhou

Xin He( ),Xiaofei Hu( ),Baotian Pan   

  1. College of Resources and Environment, Lanzhou University, Lanzhou 730030, China
  • Received:2020-01-22 Revised:2020-03-09 Online:2020-04-10 Published:2020-05-08
  • Contact: Xiaofei Hu
  • About author:He Xin (1995-), female, Handan City, Hebei Province, Master student. Research areas include quaternary geology. E-mail:
  • Supported by:
    the Second Tibetan Plateau Scientific Expedition Program “Ice-river-lake evolution history event and coupling process”(2019QZKK0208);“Paleogeographic pattern and tectonic geomorphic process since collision”(2019QZKK0704)

Xin He, Xiaofei Hu, Baotian Pan. Research and Understanding of the Evolution of the Yellow River Valley in Lanzhou[J]. Advances in Earth Science, 2020, 35(4): 404-413.

As the turning point of the Yellow River flowing from the Tibetan Plateau to the Loess Plateau, the valley evolution of Lanzhou Basin is of great significance to the study of the evolution of the Yellow River system in different geomorphic units. The evolution of the Yellow River Valley in Lanzhou has been studied for nearly 100 years. In the process of research, important research results and understandings have been obtained as follows: The denudation surface develops above the Yellow River Valley in Lanzhou Basin, and the broad and continuous 9-level terrace develops in the valley. The age of the denudation surface and 9-level Yellow River terrace was systematically determined by using a variety of dating techniques. The development pattern of the strath terraces of the Yellow River in Lanzhou was put forward. Under the background of long-term ground uplift, climate change controls the age of terrace formation, and the rate of uplift affects the number of terrace. The age of the highest terrace of the Yellow River in the basins from Lanzhou to the upper reaches of the Yellow River is gradually younger. It is revealed that the formation of the present pattern in the upper reach of the Yellow River is the result of the headward erosion from Lanzhou Basin and the drainage intergration of the internal flow basin. At the same time, the chronology of terrace sequence still needs to be deepened, the characteristics of regional tectonic uplift and deformation are lack of direct evidence, the development pattern of terrace needs to be verified by model simulation, the geomorphic response of drainage change is not clear, and the river process recorded by the deposition of terrace flood plain is lack of attention. All those issues will be the focus of future research.

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