| 内蒙古金厂沟梁西对面沟岩体岩石地球化学特征及意义 |
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| 引用本文： | 宋维民,邢德和,郭胜哲,彭艳东,卞雄飞,陶楠.内蒙古金厂沟梁西对面沟岩体岩石地球化学特征及意义[J].地质与资源,2009,18(2):134-139. |
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| 作者姓名： | 宋维民 邢德和 郭胜哲 彭艳东 卞雄飞 陶楠 |
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| 作者单位： | 1. 沈阳地质矿产研究所, 辽宁 沈阳 110034;2. 东北大学秦皇岛分校, 河北 秦皇岛 066004 |
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| 基金项目： | 中国地质调查局辽西金厂沟梁等四幅1:5万区域地质调查项目 |
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| 摘 要： | 早白垩世西对面沟花岗岩岩体的岩石地球化学研究表明，它具有高锶花岗岩的特征：高铝（Al2O3=14.51%~16.57%，平均为15.434%）、富钠（Na2O=3.75%~4.71%，平均为4.313%）、高锶（Sr=701×10-6~931×10-6，平均为802×10-6），强烈重稀土亏损，无明显的负铕异常或具有正铕异常，过渡元素富集.该岩体很可能与中国东部岩石圈减薄有关，对探讨华北克拉通北缘岩浆起源有重要意义.
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| 关 键 词： | 高锶花岗岩 华北克拉通 I型花岗岩 西对面沟岩体 内蒙古 |
| 收稿时间： | 2009-01-15 |
LITHOGEOCHEMISTRY AND SIGNIFICANCE OF THE XIDUIMIANGOU ROCK BODY IN JINCHANGGOULIANG, INNER MONGOLIA |
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| SONG Wei-min,XING De-he,GUO Sheng-zhe,PENG Yan-dong,BIAN Xiong-fei,TAO Nan.LITHOGEOCHEMISTRY AND SIGNIFICANCE OF THE XIDUIMIANGOU ROCK BODY IN JINCHANGGOULIANG, INNER MONGOLIA[J].Geology and Resources,2009,18(2):134-139. |
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| Authors: | SONG Wei-min XING De-he GUO Sheng-zhe PENG Yan-dong BIAN Xiong-fei TAO Nan |
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| Institution: | 1. Shenyang Institute of Geology and Mineral Resources, Shenyang 110034, China;2. Northeastern University, Qinhuangdao 066004, Hebei Province, China |
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| Abstract: | Lithogeochemical study shows that the Early Cretaceous Xiduimiangou rock body is typical high-Sr granite, characterized by high Al (14.51% to 16.57% of Al2O3, 15.434% in average), high Na (3.75% to 4.71% of Na2O, 4.313% in average) and high Sr (701×10-6 to 931 × 10-6 of St, averagely 802×10-6) contents, with severe H REE deficiency (21.07 -29.13 of (La/Yb)N, 23.54 in average), slightly negative or positive Eu anomalies and rich transitional elements. The rock body is likely related to the thinning of lithosphere in Eastern China. It is importantly significant for the research on the origin of magma in the northern margin of North China Craton. |
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| Keywords: | high-Sr granite North China Craton Xiduimiangou rock body Inner Mongolia |
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