| 皖南祁门地区东源钨钼矿区花岗闪长斑岩SHRIMP
锆石U-Pb年龄和Hf同位素特征 |
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| 引用本文： | 王德恩,周翔,余心起,杜玉雕,杨赫鸣,傅建真,董会明.皖南祁门地区东源钨钼矿区花岗闪长斑岩SHRIMP
锆石U-Pb年龄和Hf同位素特征[J].地质通报,2011,30(10):1514-1529. |
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| 作者姓名： | 王德恩 周翔 余心起 杜玉雕 杨赫鸣 傅建真 董会明 |
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| 作者单位： | 1. 安徽省地质矿产勘查开发局332地质队,安徽黄山,245000
2. 中国地质大学(北京)地球科学与资源学院,北京,100083 |
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| 基金项目： | 安徽省国土资源厅公益性地质(科研)工作项目《祁门县东源—绩溪县逍遥地区钨钼多金属成矿规律研究》(编号:2009-20) |
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| 摘 要： | 江家等系列花岗闪长斑岩是皖南祁门县东源钨钼矿区含矿岩体的组成部分,位于东源花岗闪长岩的西侧。对江家和方村花岗闪长斑岩进行的SHRIMP锆石U-Pb测年结果表明,江家、方村花岗闪长斑岩的结晶年龄为149~152Ma,与富钨的东源花岗闪长岩相近。岩石地球化学和锆石Hf同位素分析显示,江家等系列花岗闪长斑岩源区具有复杂的多成分端元,其中老锆石核的正εHf值反映了成岩岩浆对晋宁期岩浆岩的继承,震荡岩浆环带的负εHf值(-39.5~-2.86)指示源区的主要成分为古老的地壳物质,有少量地幔物质的混染。全岩锆石饱和温度(737~913°C)显示岩浆组成中有幔源物质的贡献。
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| 关 键 词： | 花岗闪长斑岩 SHRIMP锆石U-Pb测年 锆石Hf同位素 皖南东源矿区 |
SHRIMP zircon U-Pb dating and characteristics of Hf isotopes of the granodiorite porphyries in the Dongyuan W-Mo ore district, Qimen area, southern Anhui |
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| WANG De-en,ZHOU Xiang,YU Xin-qi,DU Yu-diao,YANG He-ming,FU Jian-zhen,DONG Hui-ming.SHRIMP zircon U-Pb dating and characteristics of Hf isotopes of the granodiorite porphyries in the Dongyuan W-Mo ore district, Qimen area, southern Anhui[J].Geologcal Bulletin OF China,2011,30(10):1514-1529. |
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| Authors: | WANG De-en ZHOU Xiang YU Xin-qi DU Yu-diao YANG He-ming FU Jian-zhen DONG Hui-ming |
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| Institution: | 1. No.332 Geological Team, Anhui Bureau of Geology and Mineral Exploration and Development, Huangshan 245000, Anhui, China;
2. School of Earth Sciences and Resources, China University of Geosciences, Beijing 100083, China |
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| Abstract: | Granodiorites in Jiangjia and neighboring areas are ore-bearing rock components of the Dongyuan W-Mo deposit in southern Anhui.The zircon SHRIMP U-Pb data show that these rock bodies were formed at 149~152 Ma,almost at the same time with the formation of the Dongyuan W-rich granodiorite.The whole-rock chemical and zircon Hf isotopic data indicate that these magma sources have complex multi-component end-members.CL images reveal that the young zircons occur as new grains or rims of homogeneous structure with... |
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| Keywords: | granodiorite zircon SHRIMP U-Pb dating zircon Hf isotope compositions Dongyuan W-Mo ore district southern Anhui |
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