| 皖南宁国-旌德一带花岗岩地球化学特征及成因 |
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| 引用本文： | 钱辉,夏军.皖南宁国-旌德一带花岗岩地球化学特征及成因[J].安徽地质,2010,20(3):183-188,233. |
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| 作者姓名： | 钱辉 夏军 |
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| 作者单位： | 安徽省地质调查院,安徽,合肥,230001;安徽省地质调查院,安徽,合肥,230001 |
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| 摘 要： | 宁国—旌德一带有大量花岗岩分布,岩石类型较简单,主要为花岗闪长岩,少量似斑状花岗闪长岩和似斑状二长花岗岩。锆石U-Pb年龄显示花岗岩为燕山早期侵入的产物。岩石化学、地球化学表明,岩石为高钾钙碱性系列岩石,由部分熔融作用形成,源岩以壳源物质为主。花岗岩的形成可能与太平洋板块向欧亚大陆板块俯冲作用有关。
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| 关 键 词： | 岩浆岩 地球化学 成因 皖南 |
GEOCHEMICAL FEATURES AND ORIGIN OF GRANITES AROUND NINGGUO-JINGDE IN SOUTH ANHUI |
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| QIAN Hui,XIA Jun.GEOCHEMICAL FEATURES AND ORIGIN OF GRANITES AROUND NINGGUO-JINGDE IN SOUTH ANHUI[J].Geology of Anhui,2010,20(3):183-188,233. |
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| Authors: | QIAN Hui XIA Jun |
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| Institution: | QIAN Hui,XIA Jun(Institute of Geological Survey of Anhui Province,Hefei,Anhui 230001,China) |
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| Abstract: | Granites are widespread around Ningguo-Jingde.The relatively simple rock types are dominated by granodiorites despite minor porphyaceous granodirotes and porphyaceous monzonitic granites.U-Pb dating of zircon indicated that the granites were products of the early Yanshanian intrusion.Petrochemical and geochemical evidence suggested that they are of high-potassium and -calcium alkaline rock series,resulted from partial melting and the source rocks were substantially crust-derived.The granites are supposed to... |
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| Keywords: | magmatic rocks geochemistry origin Ningguo-Jingde south Anhui |
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