• 责任者：Yin Gongming (State Key Laboratory of Earthquake Dynamics ; Institute of Geology ; China Earthquake Administration ; Beijing 100029 ; China) ; Jiang Yafeng
• 刊名：Seismology and Geology
• 出版年：2013
• 卷期：35(3)
• 关键词：走滑断层 ; strike-slip faults ; 左旋断层 ; left-lateral faults ; 青藏高原 ; Qinghai-Tibetan Plateau
• 页码：p.472-479
• 图表：6 illus., 1 table, 14 refs.
• 分类号：0300
• issnNo：ISSN0253-4967
• isbnNo：CN11-2192/P

     Xiangshan-Tianjingshan Fault is one of the major active faults of the arc fault zone on the north- eastern margin of the Qinghai-Tibet Plateau. The Yellow River in the Shapotou area flows through the fault and forms a perfect ＂Ω-shape＂ bend. Shapotou not only is a tourist mecca,but also a hotspot for studying the geomorphology,neotectonics,the uplift of Qinghai-Tibet Plateau and other issues. Xiangs- han-Tianjingshan Fault is mainly a left-lateral strike-slip fault with a minor thrust component. So to study the fault＇s offsets is of vital importance. This paper, based on the characteristic of the distribu- tion of the Yellow River terraces in the Shapotou Big Bend area, analyzes the offsets of the Xiangshan- Tianjingshan Fault since the formation of the terraces. The results reveal that 3 river terraces are de- veloped on the right of the Yellow River in the Shapotou area,while there is no terrace developed on the left of the river. The maximum left-lateral displacement of Xiangshan-Tianjingshan Fault is less than 880m,and the slip rate is less than 5.18mm/a since 170ka BP.