| 内蒙古大桦背I型花岗岩地球化学特征及其成因意义 |
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| 引用本文： | 张辉,戴朝成,闫秋实,王新亮,时国,陈文文,胡志成.内蒙古大桦背I型花岗岩地球化学特征及其成因意义[J].地质与资源,2015,24(1):12-19,69. |
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| 作者姓名： | 张辉 戴朝成 闫秋实 王新亮 时国 陈文文 胡志成 |
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| 作者单位： | 1. 东华理工大学 地球科学学院, 江西 南昌 330013;2. 成都理工大学 核工程与核技术学院, 四川 成都 610059;3. 内蒙古地质矿产勘查院, 内蒙古 呼和浩特 010010;4. 长江大学 地球科学学院, 湖北 武汉 430100 |
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| 基金项目： | 国土资源部“大兴安岭成矿带南段地质矿产调查”项目，东华理工大学博士基金 |
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| 摘 要： | 在大桦背花岗岩体区域地质和岩石学研究的基础上，运用X射线荧光光谱分析样品主量元素，采用电感耦合等离子体质谱对其样品进行了微量、稀土元素分析.同时结合前人的锆石年龄和Pb同位素数据，认为大桦背花岗岩为I型花岗岩，主要为古亚洲洋板块向华北板块多期俯冲过程中，中下地壳、成熟岛弧和大洋岛弧大面积部分熔融的产物，伴有少量地幔与未知含量的海洋沉积物及早期造山作用产物等物质的不同程度混合作用.
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| 关 键 词： | 大桦背花岗岩 元素地球化学 I型花岗岩 壳幔混源 俯冲过渡机制 内蒙古 |
| 收稿时间： | 2014-03-10 |
GEOCHEMICAL CHARACTERISTICS AND PETROGENETIC IMPLICATION OF THE I-TYPE DAHUABEI GRANITE PLATON IN INNER MONGOLIA |
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| ZHANG Hui,DAI Chao-cheng,YAN Qiu-shi,WANG Xin-liang,SHI Guo,CHEN Wen-wen,HU Zhi-cheng.GEOCHEMICAL CHARACTERISTICS AND PETROGENETIC IMPLICATION OF THE I-TYPE DAHUABEI GRANITE PLATON IN INNER MONGOLIA[J].Geology and Resources,2015,24(1):12-19,69. |
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| Authors: | ZHANG Hui DAI Chao-cheng YAN Qiu-shi WANG Xin-liang SHI Guo CHEN Wen-wen HU Zhi-cheng |
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| Institution: | 1. Department of Earth Sciences, East China Institute of Technology, Nanchang 330013, China;2. Department of Nuclear Engineering and Technology, Chengdu University of Technology, Chengdu 610059, China;3. Inner Mongolia Institute of Geology and Miner Resource Exploration, Hohhot 010010, China;4. Department of Earth Sciences, Yangtze University, Wuhan 430100, China |
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| Abstract: | Based on the regional geological and lithological study, the paper reports and analyzes some data of samples obtained from the Dahuabei granite pluton, including major and trace elements. Combining with previous zircon dating results and Pb isotopic data, it is concluded that the Dahuabei pluton belongs to I-type granite, which is the product of partial melting of middle and lower crust, mature island arc and oceanic island arc in large area during the multiple subduction processes of the Pale-Asian oceanic plate toward the North China plate, associated with the mixture of a little mantle magma, unknown amount of oceanic sediments and earlier orogenic products. |
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| Keywords: | element geochemistry Ⅰ-type granite mixed sources of mantle and crust transitional mechanism of subduction Dahuabei granite pluton Inner Mongolia |
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