| 粤北大宝山矿区徐屋岩体SHRIMP锆石U-Pb年龄及其地质意义 |
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| 引用本文： | 潘会彬,康志强,付文春.粤北大宝山矿区徐屋岩体SHRIMP锆石U-Pb年龄及其地质意义[J].地质通报,2014,33(6):894-899. |
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| 作者姓名： | 潘会彬 康志强 付文春 |
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| 作者单位： | 1.桂林理工大学/地球科学学院/广西隐伏金属矿产勘查重点实验室，广西 桂林 541004；
2.中国科学院地球化学研究所，贵州 贵阳 550002 |
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| 基金项目： | 广西矿冶与环境科学实验中心资助项目(编号:KH2011ZD002);广西八桂学者项目;广西教育厅项目(编号:201010LX170);广西自然科学基金项目(编号:2012GXNSFBA053132) |
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| 摘 要： | 徐屋岩体位于粤北大宝山矿区南部,是区内花岗岩体的重要组成部分。首次采用SHRIMP锆石U-Pb定年方法对徐屋岩体进行了年代学研究,获得其成岩年龄为441.2±4.2Ma(MSWD=1.02),表明其为加里东期岩浆活动的产物。结合前人年龄数据表明,大宝山矿区存在有加里东期和燕山期2次成岩作用和1次成矿作用,且成矿作用与燕山期花岗岩关系密切。
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| 关 键 词： | SHRIMP锆石U-Pb年龄 徐屋 次英安斑岩 大宝山矿区 粤北 |
SHRIMP zircon U-Pb ages of Xuwu subdacitic porphyry in the Dabaoshan ore district of northern Guangdong Province and its geological implications |
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| PAN Hui-bin,KANG Zhi-qiang,FU Wen-chun.SHRIMP zircon U-Pb ages of Xuwu subdacitic porphyry in the Dabaoshan ore district of northern Guangdong Province and its geological implications[J].Geologcal Bulletin OF China,2014,33(6):894-899. |
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| Authors: | PAN Hui-bin KANG Zhi-qiang FU Wen-chun |
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| Institution: | 1. School of Earth Science, Guangxi Key Laboratory of Hidden Metallic Ore Deposits Exploration, Guilin University of Technology,
Guilin 541004, Guangxi, China;
2. Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550002, Guizhou, China |
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| Abstract: | The Xuwu subdacitic porphyry is located in the south of the Dabaoshan ore district. This paper reports for the first time the SHRIMP zircon U-Pb age of Xuwu dacitic porphyry (441.2±4.2Ma), suggesting Caledonian. Combined with the previous dating results, the authors conclude that there are two rock-forming stages (Caledonian and Yanshanian) and one ore-forming stage (Yanshanian) in the Dabaoshan ore district, with the mineralization mainly related to the Yanshanian intrusions. |
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| Keywords: | SHRIMP zircon U-Pb ages Xuwu subdacitic porphyry Dabaoshan ore district northern Guangdong Province |
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