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| 安徽滁州琅琊山铜矿辉钼矿铼-锇同位素定年及其地质意义 | |
| 引用本文： | 秦燕,梅玉萍,王登红,张建,吴礼彬.安徽滁州琅琊山铜矿辉钼矿铼-锇同位素定年及其地质意义[J].岩矿测试,2009,28(3):259-264. |
| 作者姓名： | 秦燕 梅玉萍 王登红 张建 吴礼彬 |
| 作者单位： | 1. 中国地质科学院研究生院,北京,100037 2. 中国地质调查局宜昌地质矿产研究所,湖北,宜昌,443003 3. 中国地质科学院矿产资源研究所,北京,100037 4. 安徽省地质调查院,安徽,合肥,230000 |
| 基金项目： | 国土资源地质大调查项目，中国成矿体系综合研究项目 |
| 摘 要： | 首次运用铼-锇同位素方法对滁州琅琊山铜矿床中的辉钼矿进行定年。5件辉钼矿样品的模式年龄为(128.9±1.8)Ma～(130.3±1.9)Ma,187Re-187Os等时线年龄为(128.6±2.2)Ma,其加权平均方差(MSWD)为0.45,为滁州琅琊山铜矿床提供了准确的形成时限。分析结果表明,滁州琅琊山铜矿床是早白垩纪(燕山晚期)区域构造-岩浆活动的产物。琅琊山铜矿床辉钼矿中铼含量较高,推断成矿物质主要是壳幔混源,且主要是幔源。 |
| 关 键 词： | 琅琊山铜矿 辉钼矿 铼-锇同位素定年 |
| 收稿时间： | 2/1/2009 12:00:00 AM |
| 修稿时间： | 2009/3/15 0:00:00 |
Re-Os Isotopic Dating of Molybdenite from the Langyashan Copper Deposit in Chuzhou of Anhui Province and Its Geological Significance |
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| QIN Yan,MEI Yu-ping,WANG Deng-hong,ZHANG Jian,WU Li-bin.Re-Os Isotopic Dating of Molybdenite from the Langyashan Copper Deposit in Chuzhou of Anhui Province and Its Geological Significance[J].Rock and Mineral Analysis,2009,28(3):259-264. | |
| Authors: | QIN Yan MEI Yu-ping WANG Deng-hong ZHANG Jian WU Li-bin |
| Institution: | Graduate School of Chinese Academy of Geological Sciences;Yichang Institute of Geology and Mineral Resources, China Geological Survey;Insititute of Mineral Resources, Chinese Academy of Geological Sciences;Graduate School of Chinese Academy of Geological Sciences;Geological Survey of Anhui Province |
| Abstract: | A precise Re-Os age is given for the Langyashan copper deposit in Chuzhou. The model age for five molybdenite samples from the deposit varies from (128.9±1.8) Ma to (130.3±1.9) Ma and the isochron age is (128.6±2.2) Ma, MSWD=0.45. The results indicate that the origin of the deposit is from regional tectno-magmatic activities during the early cretaceous period. The molybdenites from the Langyashan copper deposit have a very high Re content, which indicates that the deposit originated from the mixing of the crust and the mantle sources with the mantle as a primary source. |
| Keywords: | the Langyashan copper deposit molybdenite Re-Os isotopic dating |
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