| 广西钦甲花岗岩体单颗粒锆石LA-ICP-MS U-Pb定年及其地质意义 |
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| 引用本文： | 王永磊,王登红,张长青,侯可军,王成辉.广西钦甲花岗岩体单颗粒锆石LA-ICP-MS U-Pb定年及其地质意义[J].地质学报,2011,85(4):475-481. |
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| 作者姓名： | 王永磊 王登红 张长青 侯可军 王成辉 |
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| 作者单位： | 中国地质科学院矿产资源研究所,中国地质科学院矿产资源研究所,中国地质科学院矿产资源研究所,中国地质科学院矿产资源研究所,中国地质科学院矿产资源研究所 |
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| 基金项目： | 全国危机矿山接替资源找矿项目，中央级公益性科研院所基本科研业务费专项资金 |
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| 摘 要： | 本文对钦甲花岗岩体进行了详细的LA-ICP-MS锆石U-Pb同位素年龄测定.这些锆石的阴极发光图像发育环带结构,Th/U值较高(大于0.1),具有岩浆成因锆石的特征.研究结果表明,钦甲花岗岩体为一复式岩体,其不同单元锆石的206Pb/238U加权平均年龄分别为412.4±1.8 Ma、434.8±1.7 Ma、442....
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| 关 键 词： | 锆石LA-ICP-MS U-Pb定年 广西 加里东期花岗岩 |
| 收稿时间： | 7/1/2010 8:36:41 PM |
| 修稿时间： | 9/27/2010 1:56:40 PM |
LA-ICP-MS Zircon U-Pb Dating of the Qinjia-granite and Its Tectonic Significance, Guangxi Province |
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| Wang Yong Lei,Wang Deng Hong,Zhang Chang Qing,Hou Ke Jun and Wang Cheng Hui.LA-ICP-MS Zircon U-Pb Dating of the Qinjia-granite and Its Tectonic Significance, Guangxi Province[J].Acta Geologica Sinica,2011,85(4):475-481. |
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| Authors: | Wang Yong Lei Wang Deng Hong Zhang Chang Qing Hou Ke Jun and Wang Cheng Hui |
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| Institution: | Institute of Mineral Resource, Chinese Academy of Geological Sciences,Institute of Mineral Resource, Chinese Academy of Geological Sciences,Institute of Mineral Resource, Chinese Academy of Geological Sciences,Institute of Mineral Resource, Chinese Academy of Geological Sciences,Institute of Mineral Resource, Chinese Academy of Geological Sciences |
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| Abstract: | Detailed zircon U-Pb age measurements were done on the Qinjia granite. These zircons have high Th/U ratio with zonal structure, which indicate magmatic zircons. The ziron U-Pb age for three granite rocks are 412.4±1.8Ma, 434.8±1.7Ma and 442.4±1.8Ma, respectively. The results show that all the granites formed in late Ordovician to early Silurian, which reflect the important stage of Caledonian magmatism, and provide a strong evidence for further understanding the Caledonian magmatism and its geodynamic process in South China. |
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| Keywords: | LA-ICP-MS Zircon U-Pb age Guangxi Province Caledonian |
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