| 内蒙古化德县三胜钨钼矿床辉钼矿Re-Os同位素年龄及其地质意义 |
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| 引用本文： | 李俊建,周勇,党智财,赵泽霖,李超,屈文俊,曹子存,杨国建,付超,唐文龙.内蒙古化德县三胜钨钼矿床辉钼矿Re-Os同位素年龄及其地质意义[J].地质通报,2016,35(4):531-536. |
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| 作者姓名： | 李俊建 周勇 党智财 赵泽霖 李超 屈文俊 曹子存 杨国建 付超 唐文龙 |
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| 作者单位： | 1. 中国地质调查局天津地质调查中心, 天津 300170;2. 中国地质科学院研究生部, 北京 100037;3. 中国地质科学院国家地质实验测试中心, 北京 100037;4. 华北地质勘查局核工业247大队, 天津 301800 |
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| 基金项目： | 中国地质调查局项目(编号:1212010561510、1212010811061、1212011120330、12120114001201、1212010781028、1212011085488、121201006000150015)、国土资源公益性行业科研专项(编号:200811010)和国家国际科技合作项目(编号:2012DFB20220) |
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| 摘 要： | 内蒙古化德县三胜钨钼矿床位于华北陆块北缘,为岩浆期后中高温热液型矿床。采用辉钼矿Re-Os同位素分析获得辉钼矿的模式年龄加权平均值为138±1Ma,等时线年龄为138.6±1.4Ma,推测三胜钨钼矿床的形成时代为燕山晚期,这与区域上华北陆块北缘主要金属矿床的形成年龄吻合。辉钼矿的Re含量平均值为0.5548×10~(-6),表明其主要为地壳来源特征。成矿发生在陆内构造环境,为燕山期大规模构造-岩浆作用的产物。
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Re-Os isotopic dating of molybdenites from the Sansheng W-Mo deposit in Huade County, Inner Mongolia, and its geological significance |
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| LI Junjian,ZHOU Yong,DANG Zhicai,ZHAO Zelin,LI Chao,QU Wenjun,CAO Zicun,YANG Guojian,FU Chao and TANG Wenlong.Re-Os isotopic dating of molybdenites from the Sansheng W-Mo deposit in Huade County, Inner Mongolia, and its geological significance[J].Geologcal Bulletin OF China,2016,35(4):531-536. |
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| Authors: | LI Junjian ZHOU Yong DANG Zhicai ZHAO Zelin LI Chao QU Wenjun CAO Zicun YANG Guojian FU Chao and TANG Wenlong |
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| Institution: | 1. Tianjin Center, China Geological Survey, Tianjin 300170, China;2. Graduate School of Chinese Academy of Geological Sciences, Beijing 100037, China;3. National Research Center for Geoanalysis, Chinese Academy of Geological Sciences, Beijing 100037, China;4. No. 247 Geological Party of Nuclear Industry, Tianjin North China Geological Prospecting Bureau, Tianjin 301800, China |
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| Abstract: | Located in Huade Country of Inner Mongolia on the northern margin of North China Block, the Sansheng W-Mo depos-it is a postmagmatic mesothermal deposit. Molybdenite Re-Os isotope analysis of the deposit was conducted in this paper, which yielded the weighted average value of the molybdenite model age of 138±1Ma and isochron age of 138.6±1.4Ma. In consideration of the age data, the authors hold that the Sansheng W-Mo ore deposit was formed in late Yanshanian period, consistent with the age data of the formation of main ore deposits in this region. Rhenium content in molybdenite is 0.5548×10-6, indicating the crustal ori-gin. The ore-forming event resulted from large-scale Yanshanian tectonic and igneous activities and took place in an intracontinental tectonic environment. |
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| Keywords: | molybdenite Re-Os isotope age Sansheng W-Mo deposit |
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