Journal of Jilin University(Earth Science Edition) ›› 2023, Vol. 53 ›› Issue (1): 73-87.doi: 10.13278/j.cnki.jjuese.20210396

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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

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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

CLC Number: 

  • P54
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