WANG J, LI J C, YANG Z Y.Correlation analysis between geomorphic features and tectonic active in Batangxiang Area，Yushu，Qinghai[J].Journal of Henan Polytechnic University(Natural Science) ,2023,42(3):59-68.

doi:10.16186/j.cnki.1673-9787.2021040013

Received:2021/04/03

Revised:2021/06/11

Published:2023/05/25

Correlation analysis between geomorphic features and tectonic active in Batangxiang Area，Yushu，Qinghai

WANG Jun, LI Jiacun, YANG Zhenyu

College of Resource Environment and Tourism，Capital Normal University，Beijing 100048，China

Abstract:In view of there is no unified conclusion on the movement properties of the Batangxiang fault in the vertical direction，based on the 12.5 m resolution ALOS DEM，the river steepness index was calculated and the knick points were identified.The tectonic geomorphology of Batangxiang in Yushu was quantified by the improved Chi-z method.The results showed that：（1）The river steepness index of Batangxiang basin was significantly smaller than that of the southern mountains；（2）The tectonic activity was the controlling factor for the difference in river steepness index distribution in the study area，and was also one of the causes of the knick points；（3）The Batangxiang fault was a Holocene left-lateral strike-slip fault with positive dip slip component.Due to the clockwise rotation of Qiangtang block in the process of material extrusion to the east in the Qinghai-Tibet Plateau，it had the motion component to the south，and formed the Batangxiang left-lateral strike-slip fault with positive dip slip component，which controlled and formed the Batangxiang graben basin and different distribution of the geomorphic erosion.

Key words:Batangxiang fault;tectonic geomorphology;river steepness index;area-slope; Chi⁃z

青海玉树巴塘乡地区地貌特征与构造运动相关性分析_王俊.pdf