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Gold Science and Technology ›› 2015, Vol. 23 ›› Issue (1): 24-33.doi: 10.11872/j.issn.1005-2518.2015.01.024

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The Metamorphism and Deformation of the Neoproterozoic Zhaertai Group and Transformation Response to the Sulfides Ore-deposit of Huogeqi Copper-Zinc Polymetallic Deposit in Inner Mongolia

XU Duoxun1,2,LIU Junlai2,YANG Shuanhai1,WANG Dongsheng2,3,GAO Xinlei2,WANG Wenlong2,LI Guoying1   

  1. 1.No.5 Gold Geological Party of CAPF,Xi’an   710100,Shaanxi,China;
    2.School of Earth Sciences and Resources,China University of Geosciences,Beijing   100083,China;
    3.Institute of  Mineral Resource,Chinese Academy of Geological Sciences,Beijing   100037,China
  • Received:2014-08-19 Revised:2014-11-12 Online:2015-02-28 Published:2015-04-07

Abstract:

Through analysis from outcrop to microscopic scales,and quartz c-axis fabrics,we consider the Neoproterozoic rocks in the Huogeqi ore field experienced multi-phase deformation and metamorphism.Two phases of deformation contribute to the different structural characteristics in northern,central and southern belts.The first phase of deformation is characterized by NW-SE shearing at deformation temperature at about 600 ℃.The second phase of deformation is evidenced by NE-SW shearing at ralatively low temperatures.Microscopic features of the deformed sulfides indicate that the orebodies were transformed by the multi-phase deformation.Enrichment and depletion of the orebody may result from the physical remobilization caused by the shearing.

Key words: structural deformation, shear deformation, EBSD, deformation transformation, Huogeqi polymetallic mine, Inner Mongolia

CLC Number: 

  • P618.4

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