| 宁芜盆地凹山铁矿床黄铁矿Re-Os同位素定年及其地质意义 |
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| 引用本文： | 徐益龙,黄德志,刘震,郑涛,周炜鉴.宁芜盆地凹山铁矿床黄铁矿Re-Os同位素定年及其地质意义[J].岩石矿物学杂志,2019,38(2):219-229. |
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| 作者姓名： | 徐益龙 黄德志 刘震 郑涛 周炜鉴 |
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| 作者单位： | 中南大学地球科学与信息物理学院;中南大学有色金属成矿预测与地质环境监测教育部重点实验室 |
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| 基金项目： | 国家科技支撑项目（2011BAB04D01） |
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| 摘 要： | 宁芜盆地是长江中下游成矿带的7个矿集区之一,以中生代火山岩和玢岩铁矿的广泛发育为特征。凹山铁矿床位于盆地中部,是宁芜盆地玢岩型铁矿床的重要代表之一。本文首次利用成矿元素Fe的金属矿物对宁芜盆地凹山铁矿床的黄铁矿进行了Re-Os同位素测年,获得凹山铁矿床的黄铁矿Re-Os同位素等时线年龄为127.7±2.6Ma(n=5,MSWD=0.66),直接代表凹山铁矿床的成矿年龄。~(187)Os/~(188)Os初始比值为1.73±0.56,γ_(Os(t))值为527.18～535.93,介于地幔与地壳之间,结合已有研究成果,认为凹山铁矿床的成矿物质主要来源于富集地幔,少量来自地壳。
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| 关 键 词： | Re-Os同位素定年 黄铁矿 凹山 玢岩铁矿 宁芜盆地 |
| 收稿时间： | 2018/8/5 0:00:00 |
Re-Os isotopic dating of pyrite from the Washan iron deposit in Ningwu Basin and its geological implications |
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| XU Yi-long,HUANG De-zhi,LIU Zhen,ZHENG Tao and ZHOU Wei-jian.Re-Os isotopic dating of pyrite from the Washan iron deposit in Ningwu Basin and its geological implications[J].Acta Petrologica Et Mineralogica,2019,38(2):219-229. |
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| Authors: | XU Yi-long HUANG De-zhi LIU Zhen ZHENG Tao and ZHOU Wei-jian |
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| Institution: | School of Geosciences and Info-Physics, Central South University, Changsha 410083, China;Key Laboratory of Metallogenic Prediction of Nonferrous Metals and Geological Environment Monitoring(Central South University), Ministry of Education, Changsha 410083, China,School of Geosciences and Info-Physics, Central South University, Changsha 410083, China;Key Laboratory of Metallogenic Prediction of Nonferrous Metals and Geological Environment Monitoring(Central South University), Ministry of Education, Changsha 410083, China,School of Geosciences and Info-Physics, Central South University, Changsha 410083, China;Key Laboratory of Metallogenic Prediction of Nonferrous Metals and Geological Environment Monitoring(Central South University), Ministry of Education, Changsha 410083, China,School of Geosciences and Info-Physics, Central South University, Changsha 410083, China;Key Laboratory of Metallogenic Prediction of Nonferrous Metals and Geological Environment Monitoring(Central South University), Ministry of Education, Changsha 410083, China and School of Geosciences and Info-Physics, Central South University, Changsha 410083, China;Key Laboratory of Metallogenic Prediction of Nonferrous Metals and Geological Environment Monitoring(Central South University), Ministry of Education, Changsha 410083, China |
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| Abstract: | |
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| Keywords: | Re-Os isotopic dating pyrite Washan porphyric iron-ore deposits Ningwu Basin |
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