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青海省都兰县五龙沟金矿主断裂带断层泥K-Ar定年

陆露 张延林 吴珍汉 胡道功

陆露, 张延林, 吴珍汉, 等, 2013. 青海省都兰县五龙沟金矿主断裂带断层泥K-Ar定年. 地质力学学报, 19 (4): 385-391, 446.
引用本文: 陆露, 张延林, 吴珍汉, 等, 2013. 青海省都兰县五龙沟金矿主断裂带断层泥K-Ar定年. 地质力学学报, 19 (4): 385-391, 446.
LU Lu, ZHANG Yan-lin, WU Zhen-han, et al., 2013. K-Ar DATING OF FAULT GOUGE FROM THE MAIN FAULT OF WULONGGOU GOLD DEPOSIT IN DULAN, QINGHAI PROVINCE. Journal of Geomechanics, 19 (4): 385-391, 446.
Citation: LU Lu, ZHANG Yan-lin, WU Zhen-han, et al., 2013. K-Ar DATING OF FAULT GOUGE FROM THE MAIN FAULT OF WULONGGOU GOLD DEPOSIT IN DULAN, QINGHAI PROVINCE. Journal of Geomechanics, 19 (4): 385-391, 446.

青海省都兰县五龙沟金矿主断裂带断层泥K-Ar定年

基金项目: 

中国地质调查局国土资源大调查项目 1212010711510

中国地质调查局国土资源大调查项目 1212011120182

中国地质调查局国土资源大调查项目 1212011221111

科技部国际科技合作重点项目 2006DFB211330

详细信息
    作者简介:

    陆露(1985-), 女, 博士研究生, 构造地质学专业。E-mail:yangchunyoulu@163.com

  • 中图分类号: P597

K-Ar DATING OF FAULT GOUGE FROM THE MAIN FAULT OF WULONGGOU GOLD DEPOSIT IN DULAN, QINGHAI PROVINCE

  • 摘要: 应用K-Ar法对青海省都兰县五龙沟金矿主断裂带内的3个断层泥样品进行同位素测定,以确定该脆性断裂的活动时代,初步探讨该段脆性断裂与成矿之间的关系。测试得到的断层泥样品中自生伊利石的年龄为(185.54±3.06)~(165.11±3.28)Ma,表明该矿床内的脆性断裂活动时代为早侏罗世晚期—中侏罗世,结合野外地质情况,推测脆性断裂的活动对成矿起到了改造和破坏的作用。

     

  • 图  1  东昆仑构造图(据许志琴等,2007修改)

    1—古—中元古代变质基底;2—震旦—寒武纪浅变质岩;3—早古生代浅变质岩;4—泥盆纪陆相磨拉石及火山岩;5—晚古生代—三叠纪海相沉积;6—中—新生代沉积;7—花岗岩;8—逆冲断裂;9—断裂;10—不整合;QDM—柴达木盆地;TRM—塔里木盆地;N.EKL—东昆仑北地体;S.EKL—东昆仑南地体;BY-SG—巴颜喀拉—松潘甘孜地体;N.EKL F.—东昆仑北缘逆冲断裂;CKL F.—昆中断裂;SKL-ANMQ F.—昆南—阿尼玛卿断裂

    Figure  1.  Structure map of East Kunlun Mountain

    图  2  五龙沟矿区地质简图(据文献[11]修改)

    1—第四系;2—新元古界青白口系变火山岩组;3—新元古界青白口系丘吉东沟组;4—晚元古代侵入岩-肉红色中细粒花岗岩;5—早泥盆纪侵入岩-灰黑色中粗粒二长花岗岩;6—晚志留纪侵入岩-灰黑色中粗粒二长花岗岩;7—钾长花岗岩;8—断层;9—地层产状;10—采样点

    Figure  2.  The geologic map of Wulonggou gold deposit

    图  3  五龙沟金矿主断裂带野外照片

    a—主断面野外特征;b—构造角砾岩; c—断面上的擦痕;d—黑色含矿断层泥;e—断层泥化带;f—灰白色无矿断层泥; g—断层带内的黄铁矿化; h—断层带内发育的孔雀石化

    Figure  3.  The photos of the main fault in Wulonggou gold deposit

    表  1  五龙沟金矿主断裂带断层泥K-Ar测年数据

    Table  1.   The K-Ar dating result of fault gouges from the main fault in Wulonggou gold deposit

    表  2  五龙沟金矿主断裂带断层泥组成

    Table  2.   The composition of fault gouges from the main fault in Wulonggou gold deposit

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  • 收稿日期:  2013-06-23
  • 刊出日期:  2013-12-28

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