| 白珏,张可.内蒙古乌日尼图钼铜矿床辉钼矿铼—锇同位素定年及其地质意义[J].矿产勘查,2013,4(6):671-677 |
| 内蒙古乌日尼图钼铜矿床辉钼矿铼—锇同位素定年及其地质意义 |
| Re-Os isotopic dating of molybdenite from the Wurinitu molybdenum-copper deposit in Sonid Zuoqi, Inner Mongolia and its geological significance |
| 投稿时间：2013-03-26 |
| DOI： |
| 中文关键词: 大兴安岭 乌日尼图钼铜矿 辉钼矿 铼—锇同位素定年 燕山期 |
| 英文关键词: Daxinganling Wurinitu molybdenum-copper deposit molybdenite Re-Os isotopic dating Yanshanian period |
| 基金项目:国家重点自然科学基金项目(编号:41030421)和地质调查项目(编号:1212010911029)共同资助。 |
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| 中文摘要: |
| 乌日尼图钼铜矿床位于大兴安岭成矿带,钼矿化主要与中细粒花岗岩有密切关系,辉钼矿主要呈细脉浸染状分布于中细粒花岗岩中。通过对5件辉钼矿样品进行的铼—锇同位素分析,获得同位素等时线年龄为(134±14)Ma,前人研究成果表明花岗岩的成岩年龄为(134±14)Ma,综合矿床地质特征,推测乌日尼图钼铜矿床的形成时间为(133～134)Ma前后,属燕山早期构造—岩浆活动的产物。 |
| 英文摘要: |
| The Wurinitu molybdenum-copper porphyry deposit is located in the Daxinganling metallogenic belt. The molybdenum mineralization is closely associated with the medium-fine grained granite. The molybdenite mianly occurs in the granite as disseminated and vienlets forms. Five molybdenite samples were collected from different ores for the analysis on Re-Os isotopic dating. The obtained isochron age is about (134±14) Ma. By comparing with the previous isotope age of the granite intrusion as (133.6±3.3) Ma, it can be concluded that the Wurinitu molybdenum-copper deposit was formed in the early Cretaceous period and it is derived from the Early Yanshanian tectono-magmatic activities. |
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