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J4 ›› 2012, Vol. 20 ›› Issue (1): 1-7.

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Analysis on the Ore-controlling of Guojialing Mantle Branch Structure in Northwest Shandong

SUN Aiqun1,NIU Shuyin1,2,ZHANG Jianzhen1,CHEN Chao1,2,MA Baojun1,WANG Baode1,ZHANG Xiaofei1,ZHANG Fuxiang1,LIU Cheng1   

  1. 1.Shijiazhuang University of Economics,Shijiazhuang   050031,Hebei,China;
    2.Earth Sciences and Resources College,China University of Geoscicences,Beijing   100083,China
  • Received:2011-11-21 Revised:2012-01-03 Online:2012-02-28 Published:2012-05-30

Abstract:

Ore-controlling was closely related to deep processes of gold concentrated area in the northwest Shandong.The eastern area of North China platform turned into mantle plume evolution since Yanshanian movement after the long stable evolution of Paleozoic.The northwest Shandong developed Guojiadian mantle branches around the Laiyang sub-mantle plume.Through mantle plume,sub-mantle plume,mantle branch,favorable structural expanding zones,core-mantle derived gaseous or gas-liquid Au-bearing hydrothermal fluid was migrated to the ductile-brattle or brattle-ductile zones,internal or external contact zones of intrusives dense flerry fractures,contact zones between dykes and country rocks,forming a series of gold deposits.Therefore,this constitutes a series large and medium-scale gold deposit around the Guojialing mantle branch.We also put forward that Jiaojia fault structure is the main detachment zone(fracture altered rock) on the northwestern margin of mantle branch structure,Sanshandao fault structure is listric faults hanging wall on the detachment zone,and then points out the further prospecting direction.

Key words: Mantle branch structure, Mineralization, Ore-controlling structure, Prospecting direction, Northwest Shandong

CLC Number: 

  • P618.51

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