| 云开隆起区钾长球斑片麻状黑云母花岗岩锆石特征研究——形貌、成分以及U-Pb同位素年龄 |
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| 引用本文： | 周汉文,游振东,钟增球,韩郁菁.云开隆起区钾长球斑片麻状黑云母花岗岩锆石特征研究——形貌、成分以及U-Pb同位素年龄[J].地球科学,1994(4). |
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| 作者姓名： | 周汉文 游振东 钟增球 韩郁菁 |
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| 作者单位： | 中国地质大学地质系 武汉430074 |
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| 基金项目： | 地矿部八五攻关项目 85—01—007—03—5 |
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| 摘 要： | 云开隆起区核部广泛出露的钾长球斑片麻状黑云母花岗岩中存在形貌、成分不同的3类锆石,这些锆石的单颗粒U—Pb同位素年龄明显不同,说明此类陆壳改造型花岗岩源岩成因复杂,源岩时代老于1364Ma,岩体形成时代为463～508Ma。
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| 关 键 词： | 钾长球斑片麻状黑云母花岗岩 锆石形貌 单颗锆石U—Pb同位素年龄 云开隆起区 |
Characteristics of Zircons in Orbicular Gneissic Biotite-granite from Yunkai Uplifted Area |
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| Zhou Hanwen,You Zhendong,Zhong Zengqiu,Han Yujing.Characteristics of Zircons in Orbicular Gneissic Biotite-granite from Yunkai Uplifted Area[J].Earth Science-Journal of China University of Geosciences,1994(4). |
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| Authors: | Zhou Hanwen You Zhendong Zhong Zengqiu Han Yujing |
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| Abstract: | This is the first to study zircon crystals from orbicular gneissic biotite - granite, Yunkai up-lifted area. The zircon crystals are divided into three types according to their morphology and surface characteristics. Electron microprobe analyses and single crystal U -Pb isotopic dating are carried out respectively for these three types of zircon. Four groups of age data are obtained. It is suggested that the age of Yunkai crystalline basement was probably in, the Middle Proterozoic, or even older. |
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| Keywords: | orbicular gneissic biotite-granite morphologic features single zircon crystal U-Pb age Yunkai uplifted area |
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