张连昌, 姬金生, 曾章仁, 杨兴科, 赵伦山, 蒙义峰. 韧性剪切带及其控矿作用——以新疆康古尔金矿为例[J]. 地质与资源, 1999, 8(1): 1-6. DOI: 10.13686/j.cnki.dzyzy.1999.01.001
    引用本文: 张连昌, 姬金生, 曾章仁, 杨兴科, 赵伦山, 蒙义峰. 韧性剪切带及其控矿作用——以新疆康古尔金矿为例[J]. 地质与资源, 1999, 8(1): 1-6. DOI: 10.13686/j.cnki.dzyzy.1999.01.001
    Zhang Lianchang, Ji Jinsheng, Zeng Zhangren, Yang Xingke, Zhao Lunshan, Meng Yifeng. THE DUCTILE SHEAR ZONE AND ITS ORE CONTROLLING PROCESS-WITH AN EXAMPLE FROM KANGGUL GOLD DEPOSIT,XINJIANG[J]. Geology and Resources, 1999, 8(1): 1-6. DOI: 10.13686/j.cnki.dzyzy.1999.01.001
    Citation: Zhang Lianchang, Ji Jinsheng, Zeng Zhangren, Yang Xingke, Zhao Lunshan, Meng Yifeng. THE DUCTILE SHEAR ZONE AND ITS ORE CONTROLLING PROCESS-WITH AN EXAMPLE FROM KANGGUL GOLD DEPOSIT,XINJIANG[J]. Geology and Resources, 1999, 8(1): 1-6. DOI: 10.13686/j.cnki.dzyzy.1999.01.001

    韧性剪切带及其控矿作用——以新疆康古尔金矿为例

    THE DUCTILE SHEAR ZONE AND ITS ORE CONTROLLING PROCESS-WITH AN EXAMPLE FROM KANGGUL GOLD DEPOSIT,XINJIANG

    • 摘要: 康古尔金矿具有独特的成矿地质特征,矿床位于石炭系火山岩区大型韧性剪切带的次级构造中.控矿构造表现为脆韧性剪切活动的特点,该脆韧性剪切带在成矿期的活动具有中低温、高应变速率、高差异应力的动力学特征.金矿床的分布受脆韧性剪切带控制,矿体由蚀变千糜岩和糜棱岩化火山岩中矿化富集地段组成,矿体产状平行于糜棱岩面理.矿化产于脆韧性变形强烈部位,脆性变形叠加有利于形成富金矿.

       

      Abstract: The Kanggul gold deposit is located within the northern Paleozoic Aqishan-Yamansu island arc belt in the north of Tarim plate.The outcropping stratum in the mining area is mainly Lower Carboniferous Aqishan formation,which consists of andesite,tuff and other volcanic rocks.The Kanggul gold deposit has rather unique metallogenic characteristics.It occurs in a second-order shear zone near the Qiugemingtashi-Huangshan large size ductile shear zone.The shear zone has experienced a history from ductile to brittle-ductile and brittle shear deformation.The distribution of gold deposits is strictly controlled by a brittle-ductile deformation zone,which spreads along NEE direction and inclines northwards with a dip angle of 75 o or so.The shear zone shows characteristics of ductile deformation such as S-C fabric,rotational mortar system,dynamic recrystallization, etc.Ore bodies,hosted by altered phyllonite and mylonitized volcanic rocks,are paralleled to the mylonite zone.Ore bodies always occur in the segments with the most intense deformation.Ore bodies show platy,lens-shaped and imbricated occurrence.The ore minerals are very simple.Pyrite and magnetite are major metallic minerals,while chalcopyrite,galena and sphalerite are secondary.Of the gold minerals,native gold is dominant,followed by electrum.Chloritization,sericitization and silication are the mostly common wall-rock alteration.The veinlet,dissemination and brecciform are major ore structures.

       

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