TECTONIC GEOMORPHOLOGY OF THE MINSHAN UPLIFT IN WESTERN SICHUAN, SOUTHWESTERN CHINA

SEISMOLOGY AND GEOLOGY ›› 1994, Vol. 16 ›› Issue (4): 429-439.

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TECTONIC GEOMORPHOLOGY OF THE MINSHAN UPLIFT IN WESTERN SICHUAN, SOUTHWESTERN CHINA

Zhao Xiaolin¹, Deng Qidong¹, Chen Shefa²

1. Institute of Geology, SSB, Beijing 100029;
2. China University of Geoscience (Wuhan), Wuhan 430074

Received:1994-02-01 Revised:1994-10-01 Online:1994-12-07 Published:2009-11-25

岷山隆起的构造地貌学研究

赵小麟¹, 邓起东¹, 陈社发²

1. 国家地震局地质研究所, 北京 100029;
2. 中国地质大学(武汉), 武汉 430074

基金资助:
地震科学联合基金资助(91048)

Abstract

Abstract: The NS-trending Minshan mountain in Northwestern Sichuan is an active Quatemay uplift.Its western and eastern boundaries are controlled by the active Minshan and Huya faults, respectively. The northern segment of Minshan fault has been active since 2 Ma ago. It is a reverse fault with left－lateral strike-slip component. The strike-slip displacement is about 2.4 km with a 1mm/a slip rate since 2 Ma, determined by matching offset placer gold mine with its mother lode. The Minshan and Huya faults are the major seismogenic structures in the region.

Key words: Sichuan, Minshan uplift, Minjiang fault, Huya fault, Tectonic geomor phology

摘要： 岷山隆起为一第四纪强烈抬升区,构成川西高原的西界。岷山隆起的东、西边界分别受岷江断裂与虎牙断裂的控制,为地震活动带,南部向龙门山构造带过渡。岷江断裂北段的第四纪活动始于距今2Ma以前,为一逆走滑断层,观测到的左旋位移量为2.4km,左旋滑动速率为1mm/a.岷江断裂控制了沿隆起西界分布的地震活动,包括1933年叠溪和1960年漳腊地震。

关键词: 四川, 岷山隆起, 岷江断裂, 虎牙断裂, 构造地貌

Zhao Xiaolin, Deng Qidong, Chen Shefa. TECTONIC GEOMORPHOLOGY OF THE MINSHAN UPLIFT IN WESTERN SICHUAN, SOUTHWESTERN CHINA[J]. SEISMOLOGY AND GEOLOGY, 1994, 16(4): 429-439.

赵小麟, 邓起东, 陈社发. 岷山隆起的构造地貌学研究[J]. 地震地质, 1994, 16(4): 429-439.

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TECTONIC GEOMORPHOLOGY OF THE MINSHAN UPLIFT IN WESTERN SICHUAN, SOUTHWESTERN CHINA

岷山隆起的构造地貌学研究

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