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| 内蒙古中部大青山新地沟绿岩带型金矿的成矿时代 | |
| 引用本文： | 李俊建,周学武,沈保丰,胡凤翔,桑海清,刘晓阳,王建民,李铁军.内蒙古中部大青山新地沟绿岩带型金矿的成矿时代[J].地质与勘探,2005,41(5):1-4. |
| 作者姓名： | 李俊建 周学武 沈保丰 胡凤翔 桑海清 刘晓阳 王建民 李铁军 |
| 作者单位： | 1. 中国地质大学地球科学与资源学院,北京,100083;中国地质调查局天津地质矿产研究所,天津,300170 2. 中国地质大学地球科学与资源学院,北京,100083 3. 中国地质调查局天津地质矿产研究所,天津,300170 4. 内蒙古自治区地质调查院,呼和浩特,010020 5. 中国科学院地质与地球物理研究所,北京,100029 6. 内蒙古自治区地质矿产局,呼和浩特,010020 |
| 基金项目： | 中国地质调查局资助项目，科技部科研项目 |
| 摘 要： | 内蒙古新地沟金矿床产于大青山太古宙花岗岩-绿岩带中,受色尔腾山群柳树沟组中基性火山岩系和韧性剪切带控制.容矿岩石主要是变安山质-英安质火山岩类.为解决主矿体的形成时代,采用石英40Ar/39Ar法,直接测定了含金石英细脉浸染状矿石中石英的形成时代,结果表明新地沟金矿的形成时代为1991.43～1988.93Ma.由此提出新地沟金矿的成因主要与吕梁期韧性剪切带中的变质变形作用有关. |
| 关 键 词： | 成矿时代 新地沟金矿 内蒙古大青山地区 |
| 文章编号： | 0495-5331(2005)05-0001-04 |
| 收稿时间： | 2004-11-26 |
| 修稿时间： | 2005-02-17 |
METALLOGENIC AGE OF THE XINDIGOU GREENSTONE BELT-TYPE GOLD DEPOSIT IN THE DAQINGSHAN AREA, CENTRAL INNER MONGOLIA |
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| LI Jun-jian,ZHOU Xue-wu,SHEN Bao-feng,HU Feng-xiang,SANG Hai-qing,LIU Xiao-yang,WANG Jian-min,LI Tie-jun.METALLOGENIC AGE OF THE XINDIGOU GREENSTONE BELT-TYPE GOLD DEPOSIT IN THE DAQINGSHAN AREA, CENTRAL INNER MONGOLIA[J].Geology and Prospecting,2005,41(5):1-4. | |
| Authors: | LI Jun-jian ZHOU Xue-wu SHEN Bao-feng HU Feng-xiang SANG Hai-qing LIU Xiao-yang WANG Jian-min LI Tie-jun |
| Institution: | 1. Faculty of Earth Sciences and Resources, China University of Geosciences, Beijing 100083 ; 2. Tianjin Institute of Geology and Mineral Resources, China Geological Survey, Tianjin 300170; 3. Inner Mongolia Bureau of Geological Survey, Hohhot 010020; 4. Institute of Geology and Geophysics, Chinese Academy of Science, Beijing 100029; 5. Inner Mongolia Bureau of Geology and Mineral Resources, Hohhot 010020 |
| Abstract: | Xindigou gold deposit occurs in Archean granite - greenstone belt in the Daqingshan area of Inner Mongolia. Gold mineralization was controlled by intermediate - basic volcanic rocks of Liushugou formation of Seertenshan group and ductile shear zone. The host rocks mainly are meta- andesitic - dacitic volcanic rocks. In order to solve the problem of formation age of major metallogenic epoch in the Xindigou gold deposit, fast - neutron activation method directly to test 40Ar/39Ar age of quartz in gold - bearing quartz veinlet - disseminated ore is adopted. The results show that the metallogenic epoch of Xindigou gold deposit is among 1991.43 and 1988.93Ma. It is suggested that Xindigou gold deposit is genetically related to metamorphism and deformation of ductile shear zones in the Luliang movement. |
| Keywords: | metallogenic epoch Xindigou gold deposit Daqingshan area Inner Mongolia |
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