吉林大学学报(地球科学版) ›› 2023, Vol. 53 ›› Issue (1): 73-87.doi: 10.13278/j.cnki.jjuese.20210396

• 地质与资源 • 上一篇    下一篇

基于构造物理模拟的塔中北坡NE向走滑断裂形成机理

 何松高1, 李传新1, 张义平2,3, 庞思晨1   

  1. 1.中国地质大学(北京)能源学院,北京100083

    2.自然资源部深地动力学重点实验室/中国地质科学院地质研究所,北京100037

    3.中国地质科学院,北京100037


  • 收稿日期:2021-12-03 出版日期:2023-01-26 发布日期:2023-04-04

Mechanism of the NE Trending Strike-Slip Fault in the North Slope of Tazhong Based on Analogue Modelling

He Songgao1, Li Chuanxin1, Zhang Yiping2,3 , Pang Sichen1   

  1. 1. School of Energy Resources, China University of Geosciences (Beijing), Beijing 100083, China

    2. Key Laboratory of Deep-Earth Dynamics of Ministry of Natural Resources/Institute of Geology, Chinese Academy of

    Geological Sciences, Beijing 100037, China

    3. Chinese Academy of Geological Sciences, Beijing 100037, China

  • Received:2021-12-03 Online:2023-01-26 Published:2023-04-04

摘要:

为了揭示塔中北坡NE向走滑断裂的形成机制,本文在前人研究的基础上,利用相似分析原理,设计了构造物理模拟实验平台,完成了3组构造物理模拟对比实验,模拟了塔中北坡NE向走滑断裂的形成演化过程,分析了塔中北坡NE向走滑断裂的形成机制。结果表明:塔中北坡NE向走滑断裂受控于先存的基底断裂以及上奥陶统厚层泥岩的调节作用,在周缘构造活动的作用下形成;塔中地区NE向走滑断裂经历了形成期和复活期两个阶段,先后受到SW方向与SE方向作用力挤压。


关键词: 塔中NE向走滑断裂, 构造物理模拟, 滑脱层, 先存断裂, 构造演化

Abstract:

In order to reveal the formation mechanism of the NE trending strike-slip faults in the north slope of Tazhong region, based on previous studies, this paper designed a structural physical simulation experiment platform by using the principle of similarity analysis, completed three sets of structural physical simulation comparison experiments, simulated the formation and evolution process, and analyzed the formation mechanism of the NE trending strike-slip faults in the north slope of Tazhong region.The results show that the NE trending strike-slip faults are controlled by the adjustment of pre-existing basement faults and thick mudstone (detachment zone) of the Upper Ordovician, and formed under the action of the surrounding tectonic activities. The NE trending strike-slip faults in Tazhong area experienced two stages of formation and resurrection, and were compressed by paleo-stresses from the southwest and southeast successively.


Key words: Tazhong NE trending strike-slip fault, analogue modelling, detachment zone, pre-existing fault, tectonic evolution

中图分类号: 

  • P54
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