Landslide Development and the Geological Process of Watercourse Evolution in the Three Gorges Reservoir Area
详细信息
- 责任者：Chen Guojin (Hubei Geological Environment Station ; Jingzhou 434020 ; China) ; Li Changan
- 刊名：Earth Science
- 出版年：2013
- 卷期：38(2)
- 关键词：滑坡 ; landslides ; 新构造运动 ; neotectonic movement ; 长江三峡 ; Yangtze Three Gorgees
- 页码：p.411-416
- 图表：illus., 1 table, 11 refs.
- 分类号：0300
- issnNo：ISSN1000-2383
- isbnNo：CN42-1233/P
摘要
According to the regional survey for geo-hazards, thousands of landslides occurred in the Three Gorges reservoir area. Chronology studies show that these landslides mostly occurred after the Mid-Pleistocene and could be divided in 3 stages, namely, (41-37)×104 aBP, (31-27)×104 aBP and (17-5)×104 aBP. These landslides mostly occurred in the interglacial period and could be well related with the regional uplift and geological process of the formation of river landform in the Three Gorges area. Based on these, we conclude that the occurrence of the landslides can be well correlated with tectonic uplift, climate change, rapidly down-cutting and breakthrough development in the Yangtze River. It is inferred that the cut-through timing of the Three Gorges probably be Early Pleistocene mainly owing to the loss of landslides which ages older than 54×104 aBP.
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