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DONG Han, LI Hong-rui, SHI Wen-li. Characteristics of the ductile shear zone of the eastern margin in the east section of the Mid-Qilian massif, Gansu[J]. Northwestern Geology, 2002, 35(3): 53-58.
Citation: DONG Han, LI Hong-rui, SHI Wen-li. Characteristics of the ductile shear zone of the eastern margin in the east section of the Mid-Qilian massif, Gansu[J]. Northwestern Geology, 2002, 35(3): 53-58.
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Characteristics of the ductile shear zone of the eastern margin in the east section of the Mid-Qilian massif, Gansu

  • Third of Gansu Institute of Geology and Mineral Exploration, Lanzhou 730050, China

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  • Received Date: December 30, 2001
  • Revised Date: March 04, 2002
  • Published Date: September 04, 2002
    Graphical Abstract
    • Abstract
  • In the eastern Oilian orogenic belt of Baiyin area,Gansu,we discovered two NNE directive ductile shear zones that ranges parallelly through 1:50000 geological mapping. According to the characteristic of geometric conformation and microscopic fabric,it is suggested that zones are right-lateral strike-slip shear and opposite "S" suture progeny formed by oblique collisions of Qilian and Qinling orogenic belt at terminal Caledonian. At the effect of structure and magmatite in this district,it finally formed by st rike-slip of different continental blocks.
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    • References (1)
  • 高秉璋,洪大卫,郑基俭,等.花岗岩类区1∶5万区域地质填图方法指南[M].武汉:中国地质大学出版社,1991.
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