| 皖北九顶山组灰岩稀土元素地球化学特征及对古海水的制约 |
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| 引用本文： | 陈 松 桂和荣 孙林华 刘向红 马艳平,王明志 董方灵 梁群峰 金 平 张汉甫.皖北九顶山组灰岩稀土元素地球化学特征及对古海水的制约[J].中国地质,2011,38(3):664-672. |
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| 作者姓名： | 陈 松 桂和荣 孙林华 刘向红 马艳平 王明志 董方灵 梁群峰 金 平 张汉甫 |
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| 作者单位： | 宿州学院,地球科学与工程学院,安徽宿州234000 |
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| 基金项目： | 国家自然科学基金(40873015); 宿州学院硕士科研启动基金(2009YSS01、2009YSS05); 安徽省教育厅自然科学项目(KJ2011B177)资助 |
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| 摘 要： | 采集皖北新元古代九顶山组灰岩进行了系统的岩石学和稀土地球化学分析,研究了灰岩中稀土元素的来源,并对海水的稀土配分模式进行反演,结果表明:灰岩中稀土元素主要受控于古海洋,基本不受陆源物质影响;灰岩样品中稀土含量很低,平均为8.54×10-6,轻重稀土分异明显,为正常浅海沉积;海水稀土配分模式与灰岩相似,为重稀土亏损,灰岩和海水的Y/Ho、Y/Dy值呈正相关;海水具有较高的Y/Ho比、Ce负异常,且海水的δEuNASC值小于1,表明了新元古代海水与现代海水的稀土元素特征基本相似。
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| 关 键 词： | 稀土元素 九顶山组 古海水 沉积环境 安徽北部 |
Geochemical characteristics of REE in limestone of Jiudingshan Formation, northern Anhui Province and their constraint on the seawater |
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| CHEN Song,GUI He-rong,SUN Lin-hu,LIU Xiang-hong,MA Yan-ping and WANG Ming-zhi,DONG Fang-ling,LIANG Qun-feng,JIN Ping,ZHANG Han-fu.Geochemical characteristics of REE in limestone of Jiudingshan Formation, northern Anhui Province and their constraint on the seawater[J].Chinese Geology,2011,38(3):664-672. |
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| Authors: | CHEN Song GUI He-rong SUN Lin-hu LIU Xiang-hong MA Yan-ping and WANG Ming-zhi DONG Fang-ling LIANG Qun-feng JIN Ping ZHANG Han-fu |
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| Institution: | CHEN Song,GUI He-rong,SUN Lin-hua,LIU Xiang-hong,MA Yan-ping(School of Earth Sciences and Engineering,Suzhou University,Suzhou 234000,Anhui,China) |
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| Abstract: | In this paper,petrological and rare earth element analysis was carried out for limestone collected from the Jiudingshan Formation in northern Anhui Province,the origin of REE in limestone was studied,and the rare earth elements distribution patterns of the seawater were inversed.The results imply that rare earth elements in the limestone were mainly controlled by ancient oceans,without the influence of detrital material,that the total rare earth elements(REE) content is rather low,only 8.54*10-6 on average,... |
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| Keywords: | rare earth elements Jiudingshan Formation ancient seawater sedimentary environment northern Anhui Province |
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