| 阿尔泰南缘哈巴河岩体LA-ICP-MS锆石定年及地质意义 |
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| 引用本文： | 李永,周刚,柴凤梅.阿尔泰南缘哈巴河岩体LA-ICP-MS锆石定年及地质意义[J].新疆地质,2012,30(2):146-151. |
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| 作者姓名： | 李永 周刚 柴凤梅 |
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| 作者单位： | 1. 新疆大学新疆中亚造山带大陆动力学与成矿预测实验室,新疆 乌鲁木齐,830049
2. 新疆大学新疆中亚造山带大陆动力学与成矿预测实验室,新疆 乌鲁木齐 830049;新疆维吾尔自治区地质矿产勘查开发局,新疆 乌鲁木齐 830000 |
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| 摘 要： | 哈巴河岩体位于新疆阿尔泰造山带南缘阿舍勒火山沉积盆地东侧,为基性-中性-酸性岩组成的复式岩体。为了解该岩体形成时代,采用LA-ICP-MS锆石U-Pb法测年,获得二长花岗岩结晶年龄为(406.3±2.1)Ma。结合前人研究成果认为,该岩体形成于阿尔泰造山带岩浆活动高峰时期,形成于火山弧环境。
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| 关 键 词： | 阿尔泰南缘 哈巴河岩体 LA-ICP-MS锆石U-Pb年龄 |
LA-ICP-MS U-Pb Ages and Geological Implications of the Habahe Pluton at the Southern Margin of the Altay,Xinjiang |
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| LI Yong
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ZHOU Gang
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CHAI Feng-mei.LA-ICP-MS U-Pb Ages and Geological Implications of the Habahe Pluton at the Southern Margin of the Altay,Xinjiang[J].Xinjiang Geology,2012,30(2):146-151. |
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| Authors: | LI Yong ZHOU Gang CHAI Feng-mei |
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| Affiliation: | 1 (1.Xinjiang Key Laboratory for Geodynamic Processes and Metallogenic Prognosis of the Central Asian Orogenic Belt,Xinjiang University,Urumqi,Xinjiang,830049,China;2.Xijiang Bureau of Geology and Mineral Resources,Urumqi,Xinjiang,830000,China) |
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| Abstract: | Habahe plutons,in the east of Ashele volcano-sedimentary basin,are located at the southern margin of the altay orogenic belt,which are composed of basic intrusion-intermediate intrusion-acid intrusion.LA-ICP-MS U-Pb zircon analyses from monzogranite yield weighted mean 206Pb/238U ages of 406.3±2.1 Ma,which can be interpreted as the crystallization age of the monzogranite.These intrusions are generated at the early Devonian,which is a period with intense magma activity at the southern margin of the Altay orogenic belt related to an active continental margin. |
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| Keywords: | The southern margin of the Altay Habahe pluton LA-ICP-MS U-Pb dating |
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