新生逆冲断裂地表垂直位错分布与断层活动性关系: 以河西走廊临泽断裂为例

李占飞; 徐锡伟; 任俊杰; 李康; 康文君

doi:10.3799/dqkx.2021.238

Volume 47 Issue 3

Mar. 2022

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Li Zhanfei, Xu Xiwei, Ren Junjie, Li Kang, Kang Wenjun, 2022. Vertical Slip Distribution along Immature Active Thrust and Its Implications for Fault Evolution: A Case Study from Linze Thrust, Hexi Corridor. Earth Science, 47(3): 831-843. doi: 10.3799/dqkx.2021.238

Citation:

Li Zhanfei, Xu Xiwei, Ren Junjie, Li Kang, Kang Wenjun, 2022. Vertical Slip Distribution along Immature Active Thrust and Its Implications for Fault Evolution: A Case Study from Linze Thrust, Hexi Corridor. Earth Science, 47(3): 831-843. doi: 10.3799/dqkx.2021.238

Citation:

Li Zhanfei, Xu Xiwei, Ren Junjie, Li Kang, Kang Wenjun, 2022. Vertical Slip Distribution along Immature Active Thrust and Its Implications for Fault Evolution: A Case Study from Linze Thrust, Hexi Corridor. Earth Science, 47(3): 831-843. doi: 10.3799/dqkx.2021.238

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Vertical Slip Distribution along Immature Active Thrust and Its Implications for Fault Evolution: A Case Study from Linze Thrust, Hexi Corridor

doi: 10.3799/dqkx.2021.238

Li Zhanfei^{1, 2, 3
,
,},
Xu Xiwei^{1
,
,
,},
Ren Junjie¹,
Li Kang¹,
Kang Wenjun¹

1.
National Institute of Natural Hazard, Ministry of Emergency Management of the People's Republic of China, Beijing 100085, China
2.
Beijing Earthquake Agency, Beijing 100080, China
3.
Institute of Geology, China Earthquake Administration, Beijing 100029, China

Received Date: 2021-08-16
Publish Date: 2022-03-25

Abstract

Abstract

Slip distribution is necessary for the understanding and construction of rupture behavior along active faults. Although large number of researches have been focused on this issue using high-resolution topographic data, the slip distribution along immature active thrusts is still unclear. Two significantly different scenarios exist on this issue until this day. One is the large variation triangular distribution, and the other is comparatively uniform distribution. Using 8 km length, 2.5 km width and 0.5 m resolution UAV derived DEM data; we mapped in detail the geomorphic units, measured 73 vertical separations, and analyzed the parameters of the surface rupture. The Linze thrust is mainly composed of two left stepping branches, and the width of the step is ~260 m. The triangular slip distribution, with maximum and minimum vertical throws of 4.5 m and 0.2 m, respectively, reveals progressively lateral propagation of the thrust. The analysis of surface rupture parameters for the Linze thrust reveals the immature structure and the trend of connection and propagation of the segmented branches. Thus, more attention possibly should be paid to the influence of the propagation and connection of the thrust for the neighboring counties.
- immature active thrust,
- vertical slip distribution,
- structure maturity,
- fault propagation,
- seismology

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References

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Vertical Slip Distribution along Immature Active Thrust and Its Implications for Fault Evolution: A Case Study from Linze Thrust, Hexi Corridor

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