Volume 25 Issue S1
May  2019
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Article Navigation >  Journal of Geomechanics  > 2019  >  25(S1): 32-38
ZHENG Jiaxing, ZHAO Tongyang, HAN Qiong, et al., 2019. TECTONIC DEFORMATION CHARACTERISTICS AND ORE-CONTROL SIGNIFICANCE OF THE SANJIASHAN DUCTILE SHEAR ZONE IN BEISHAN OROGENIC BELT, XINJIANG. Journal of Geomechanics, 25 (S1): 32-38. DOI: 10.12090/j.issn.1006-6616.2019.25.S1.006
Citation: ZHENG Jiaxing, ZHAO Tongyang, HAN Qiong, et al., 2019. TECTONIC DEFORMATION CHARACTERISTICS AND ORE-CONTROL SIGNIFICANCE OF THE SANJIASHAN DUCTILE SHEAR ZONE IN BEISHAN OROGENIC BELT, XINJIANG. Journal of Geomechanics, 25 (S1): 32-38. DOI: 10.12090/j.issn.1006-6616.2019.25.S1.006
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TECTONIC DEFORMATION CHARACTERISTICS AND ORE-CONTROL SIGNIFICANCE OF THE SANJIASHAN DUCTILE SHEAR ZONE IN BEISHAN OROGENIC BELT, XINJIANG

doi: 10.12090/j.issn.1006-6616.2019.25.S1.006

  • Geological Survey Institute of Xinjiang, Urumqi 830000, Xinjiang, China

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  • Published: 2019-05-01
    Abstract
  • To further investigate the tectonic movement and ore-controlling significance of the Sanjiashan ductile shear zone on the northern margin of the Beishan orogenic belt, on the basis of fully collecting the results of previous work, through carrying out the systematic field geological surveys, the spatial distribution, material composition and mechanical properties of the ductile shear zone are basically identified. After the analysis of the macroscopic and microstructural deformation characteristics of the typical tectonic phenomena, combined with the metamorphic characteristics and shearing of the stratigraphic shear zone, the characteristics of the in-band rock combination, it is considered that the Sanjiashan ductile shear zone belongs to the middle—shallow tectonic facies and generally reflects the characteristics of thrust—left—slip. Combined with the gold deposits in the lead-zinc deposits and ductile shear zones of the Precambrian metamorphic basement discovered in the belt, it is believed that the ductile shear zone plays an important role in the activation of the Precambrian metamorphic crystalline basement and the transformation of the Paleozoic volcano-sedimentary caprock, with obvious guiding and ore-controlling effects.

     

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