Abstract
In the upper reaches of the Yellow River in the northeastern Tibetan Plateau, the uplift of the Tibetan Plateau and the erosion of the Yellow river reformed the landscape of the region and built steep slopes and terraces. A lot of giant landslides developed along the steep valley of the river. However, the influence of landslides to river terraces has been unclear because landslides development stages cannot be identified easily in field survey. In the study, the Xijitan giant landslide was analyzed by combining the remote sense analysis of geological facies and the field survey. The five development stages of the landslide and the related dammed lake were identified by analyzing the topographic features. It was concluded (1) the main Xijitan landslide was triggered by rain during the warm and wet Holocene Optimum period after ~6000 a BP. (2) The outburst of the dammed lake of the landslide reformed the dammed body to build a local terrace that is different from other regional river terraces.
Highlights
The development of geo hazards, such as landslides and debris flows are closely related to the geomorphic evolution and is a process of the landform reshaping
In order to reveal the response of the geo hazards to the geomorphic evolution, many studies have been carried out by scientists
Chen et al [1] studied the geological process of the Huangtupo landslide in the Three Gorges reservoir
Summary
The development of geo hazards, such as landslides and debris flows are closely related to the geomorphic evolution and is a process of the landform reshaping. The Xijitan giant landslide and its dammed lakes in Guide basin is chosen to study its evolution and effects on geomorphic evolution by remotely sensed analysis of geological facies and field investigation (Figure 1). Xijitan landslide located at the north shore of the Yellow River in the Guide Basin.
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