| 皖北奥陶系碳酸盐岩稀土元素地球化学特征及其古岩溶意义 |
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| 引用本文： | 李定龙. 皖北奥陶系碳酸盐岩稀土元素地球化学特征及其古岩溶意义[J]. 地学前缘, 2000, 7(2): 353-365 |
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| 作者姓名： | 李定龙 |
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| 作者单位： | 江苏石油化工学院机械工程系!江苏常州213016 |
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| 基金项目： | 煤炭科学基金资助项目!(96地区 10 70 8) |
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| 摘 要： | 依据安徽北部刘桥二矿奥陶系碳酸盐岩隐伏剖面 (下奥陶统顶部 ) 17个碳酸盐岩样品的稀土元素 (15个项目 )的测试资料 ,针对不同岩性 ,分类阐述了它们的REE总量和配分模式、LREE和HREE、δEu和δCe的地球化学特征及其剖面变化特点。在此基础上 ,详细讨论了碳酸盐岩稀土地球化学特征成因机理与古岩溶发育环境的关系 ,为在岩溶岩地球化学特征与其形成环境及溶蚀程度间建立定量识别标准提供了依据。
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| 关 键 词： | 奥陶系 碳酸盐岩 稀土元素 地球化学 古岩溶环境 安徽北部 |
REE GEOCHEMICAL FEATURES OF CARBONATE ROCKS AND ITS PALEOKARST SIGNIFICANE IN THE ORDOVICIAN IN NORTHERN ANHUI |
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| LI Ding long. REE GEOCHEMICAL FEATURES OF CARBONATE ROCKS AND ITS PALEOKARST SIGNIFICANE IN THE ORDOVICIAN IN NORTHERN ANHUI[J]. Earth Science Frontiers, 2000, 7(2): 353-365 |
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| Authors: | LI Ding long |
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| Abstract: | Using the data of the REE contents of 17 samples of karstic rocksin carbonate rocks section of Ordovician in Liuqiao of Northern Anhui on the basis of w (∑REE),the distribution model of REE,the characteristics and the relations between LREE and HREE, δ Eu and δ Ce, the author discusses in detail the relation between REE geochemical characteristics of karstic rocks and its paleokarst development environments, and provides the quantitative recognition standard between erosion and formational environment of karstic rocks. |
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| Keywords: | Ordovician system carbonate rock REE geochemistry paleokarst environment northern Anhui |
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