| 浙江淳安木瓜基性岩墙群U-Pb年龄、地球化学特征及意义 |
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| 引用本文： | 李福林,周汉文,唐增才,李益龙,汪发祥,徐于晨,覃洪锋,罗微,关成国.浙江淳安木瓜基性岩墙群U-Pb年龄、地球化学特征及意义[J].地球化学,2011,40(1):22-34. |
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| 作者姓名： | 李福林 周汉文 唐增才 李益龙 汪发祥 徐于晨 覃洪锋 罗微 关成国 |
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| 作者单位： | 中国地质大学(武汉)地球科学学院;中国地质大学地质过程与矿产资源国家重点实验室;浙江省地质调查院;中国科学院地球化学研究所; |
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| 基金项目： | 浙江省国土资源厅项目(2007002); 国土资源部公益性行业科研专项经费项目(200811015) |
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| 摘 要： | 浙江淳安木瓜地区基性岩墙群以NW-SE向产出,岩性丰要为辉绿岩和辉绿玢岩,地球化学分析显示其主要属于拉斑玄武岩系列.稀土元素分布模式均表现为右倾型,(La/Yb)N=5.1～7.6,平均为6.4,反映轻重稀土元素分异较为明显,重稀土元素明显亏损,表明源区有石榴子石的残余.La/Sm-La图解显示本区基性岩墙的岩浆是平衡...
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| 关 键 词： | 基性岩墙群 U-Pb年代学 地球化学 浙江省 |
U-Pb ages, geochemistry and tectonic implications of mafic dyke swarms in Mugua, Chun'an county, Zhejiang Province |
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| LI Fu-lin,ZHOU Han-wen,TANG Zeng-cai,LI Yi-long,WANG Fa-xiang,XU Yu-chen,QIN Hong-feng,LUO Wei,GUAN Cheng-guo.U-Pb ages, geochemistry and tectonic implications of mafic dyke swarms in Mugua, Chun'an county, Zhejiang Province[J].Geochimica,2011,40(1):22-34. |
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| Authors: | LI Fu-lin ZHOU Han-wen TANG Zeng-cai LI Yi-long WANG Fa-xiang XU Yu-chen QIN Hong-feng LUO Wei GUAN Cheng-guo |
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| Institution: | LI Fu-lin1,2,ZHOU Han-wen1,TANG Zeng-cai3,LI Yi-long1,WANG Fa-xiang3,XU Yu-chen4,QIN Hong-feng1,LUO Wei1 and GUAN Cheng-guo1 1.Faculty of Earth Science,China University of Geosciences,Wuhan 430074,China,2.State Key Laboratory of Geological Processes and Mineral Resources,3.Zhejiang Institute of Geological Survey,Xiaoshan 311203,4.Institute of Geochemistry,Chinese Academy of Sciences,Guiyang 550002 |
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| Abstract: | The mafic dyke swarms in Mugua-Chun'an area,Zhejiang Province mainly consist of diabase and diabase porphyrite with NW-SE trend.The rocks are mainly tholeiitic according to geochemical analyses.The REE distribution patterns show strong LREE-enrichment,with(La/Yb)N ratios of 5.1-7.6(mean=6.36),indicating a strong fractionation between LREE and HREE and possible residual garnet in the source region.The La/Sm vs.La diagram shows that the mafic dyke swarms in this region are mainly the production of equilibrium... |
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| Keywords: | mafic dyke swarms U-Pb geochronology geochemistry Zhejiang Province |
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