Journal of Jilin University(Earth Science Edition) ›› 2016, Vol. 46 ›› Issue (5): 1440-1448.doi: 10.13278/j.cnki.jjuese.201605114

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Extensional Detachment,Northern Great Xing'an Ranges,NE China

Liu Boran1, Li Wei2, Zhang Shouzhi3, Peng Tianming4, Feng Zhiqiang4   

  1. 1. School of Earth Sciences and Resources, China University of Geosciences, Beijing 100083, China;
    2. China Aero Geophysical Survey & Remote Sensing Center for Land and Resources, Beijing 100083, China;
    3. Geography Department, Sciences College of Yanbian University, Yanji 133002, Jilin, China;
    4. College of Earth Sciences, Jilin University, Changchun 130061, China
  • Received:2015-09-10 Online:2016-09-26 Published:2016-09-26
  • Supported by:

    Supported by National ‘973’ Project(2013CB429802)

Abstract:

We carried out a detail study of the large-scale extensional detachment structure in Qika, Erguna, northern Great Xing'an Ranges, NE China. The extensional detachment structures in the northern Great Xing'an Ranges and their relation to the uplift of Great Xing'an Ranges were also summarized and discussed. The extensional detachment structure in Qika dips northwest with NE strike. The shear deformation is a simple shearing with thinning strain and SL tectonites. The movement direction structures indicate a NW-directed sliding in the Qika extensional detachment. The comparing studies of the Nenjiang Keluo, Galashan, Cuogang extensional detachment structures indicate that the extensional detachment structures in Great Xing'an Ranges were produced by regional extension in Early Cretaceous. With developing of the large-scale extensional detachment, strong magmatic underplating took place in Great Xing'an Ranges, which resulted in the rapid uplift of Great Xing'an Ranges and extensional detachment structures with SE-directed sliding in the east side and NW-directed sliding in the west side of the Great Xing'an Ranges.

Key words: Great Xing'an Range, Qika, extensional detachment, shear deformation

CLC Number: 

  • P542

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[1] Liu Boran,Li Wei,Jia Jie,Li Weimin,Liang Chenyue,Wen Quanbo. Extensional Detachment Structure in Galashan, Northern Great Xing’an Ranges, NE China [J]. Journal of Jilin University(Earth Science Edition), 2014, 44(4): 1142-1152.
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