| 安徽潜山县双河大理岩锆石U-Pb年龄及其地质意义 |
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| 引用本文： | 夏斌,袁亚娟,张玉泉,王敏,夏连泽,李贺,汪方跃,张红,吴维平.安徽潜山县双河大理岩锆石U-Pb年龄及其地质意义[J].地质学报,2012,86(4):619-625. |
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| 作者姓名： | 夏斌 袁亚娟 张玉泉 王敏 夏连泽 李贺 汪方跃 张红 吴维平 |
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| 作者单位： | 中国科学院广州地球化学研究所,中国科学院广州地球化学研究所,中国科学院广州地球化学研究所,中国科学院广州地球化学研究所,中山大学海洋学院,中国科学院广州地球化学研究所,中国科学院广州地球化学研究所,中国科学院广州地球化学研究所,安徽省地质调查院 |
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| 基金项目： | 国家重点基础研究发展计划（973计划）,中国科学院知识创新项目 |
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| 摘 要： | 本文分析了安徽潜山双河大理岩的岩石化学成分、微量元素和稀土元素,并通过锆石"CL"图像,确定变质锆石和变质复合锆石测点位置。定年结果:①变质复合锆石中老核"继承锆石",共测定32个点,年龄范围在2357～342Ma:属于元古宙的15个,年龄范围在2357～572Ma,古生代17个,年龄范围在524～342Ma;②变质锆石共测定8个点,其中5个点年龄范围在249～234Ma,相当超高压变质时间,年龄范围在228～221Ma,即退变质时间。前述大量古生代的岩浆碎屑锆石(继承锆石)的存在,表明双河大理岩的原岩泥灰岩,时代不会早于古生代。
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| 关 键 词： | 锆石U-Pb年龄 大理岩 双河 潜山县 安徽省 |
| 收稿时间： | 2011/9/13 0:00:00 |
| 修稿时间： | 2012/1/18 0:00:00 |
Zircon U-Pb ages of the marble from Shuanghe Qianshan County and their geological significance |
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| LIU Zhen,HUANG Yanhui,LIU Jingjing,PAN Gaofeng,WU Xund,WANG Jing,ZHANG Shengbin.Zircon U-Pb ages of the marble from Shuanghe Qianshan County and their geological significance[J].Acta Geologica Sinica,2012,86(4):619-625. |
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| Authors: | LIU Zhen HUANG Yanhui LIU Jingjing PAN Gaofeng WU Xund WANG Jing ZHANG Shengbin |
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| Institution: | Guangzhou Institute of Geochemistry, Chinese Academy of Sciences;,Guangzhou Institute of Geochemistry, Chinese Academy of Sciences,Guangzhou Institute of Geochemistry, Chinese Academy of Sciences,Guangzhou Institute of Geochemistry, Chinese Academy of Sciences,Marine college of Sun Yat-Sen University,Guangzhou Institute of Geochemistry, Chinese Academy of Sciences,Guangzhou Institute of Geochemistry, Chinese Academy of Sciences,Guangzhou Institute of Geochemistry, Chinese Academy of Sciences,Geological Survey of Anhui Province |
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| Abstract: | The paper analyzes the chemical composition and trace elements of the Shuanghe marble rock and also studies on confirming the point position of the Metamorphic and metamorphic complex zircon by CL zircon image. The dating result as follows: 1) The older core \"inherited zircon\" in the metamorphic complex zircon were measured 32 points ranging from 2357Ma to 342Ma, among these 15 belong to Proterozoic era with the age range from 2357Ma to 572Ma and 17 are Paleozoic from 524Ma to 342Ma. 2)8 points had been made in the Metamorphic zircon and 5 in which within the scope of 249Ma to 234Ma corresponding to the UHP time, furthermore age ranging at 228Ma ~221Ma are retrograde time. Above all, the existing of a large number of Paleozoic magmatic inherited zircon indicates the original rock of the Shuanghe marble rock will not earlier than the Paleozoic era. |
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| Keywords: | zircon U-Pb ages marble Shuanghe Qianshan County Anhui Province |
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