| 内蒙古苏尼特右旗查干诺尔石炭系本巴图组火山岩地球化学特征及其地质意义 |
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| 引用本文： | 汤文豪,张志诚,李建锋,冯志硕,晨辰.内蒙古苏尼特右旗查干诺尔石炭系本巴图组火山岩地球化学特征及其地质意义[J].北京大学学报(自然科学版),2011(2):321-330. |
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| 作者姓名： | 汤文豪 张志诚 李建锋 冯志硕 晨辰 |
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| 作者单位： | 造山带与地壳演化教育部重点实验室北京大学地球与空间科学学院; |
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| 基金项目： | 中国地质调查局项目(1212010050503); 国家自然科学基金(40672146)资助 |
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| 摘 要： | 内蒙古查干诺尔地区石炭系本巴图组地层的火山岩,SiO2含量集中分布在48.20%～51.11%和64.66%～65.42%两个区间,分别属于玄武岩和英安岩,构成一套双峰式火山岩组合.其中基性火山岩具有枕状和块状构造,属于碱性玄武岩系列;英安岩的碱含量较高,属于钙碱性系列.基性火山岩中,枕状玄武岩轻稀土略亏损而重稀土略富...
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| 关 键 词： | 索伦缝合带 双峰式火山岩 枕状玄武岩 晚石炭世 苏尼特右旗 |
Geochemistry of the Carboniferous Volcanic Rocks of Benbatu Formation in Sonid Youqi,Inner Mongolia and Its Geological Significance |
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| TANG Wenhao,ZHANG Zhicheng,LI Jianfeng,FENG Zhishuo,CHEN Chen.Geochemistry of the Carboniferous Volcanic Rocks of Benbatu Formation in Sonid Youqi,Inner Mongolia and Its Geological Significance[J].Acta Scientiarum Naturalium Universitatis Pekinensis,2011(2):321-330. |
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| Authors: | TANG Wenhao ZHANG Zhicheng LI Jianfeng FENG Zhishuo CHEN Chen |
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| Institution: | The Key Laboratory of Orogenic Belts and Crustal Evolution(MOE),School of Earth and Space Sciences,Peking University,Beijing 100871; |
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| Abstract: | The Carboniferous volcanic rocks of Benbatu Formation at Chagannuoer in Sonid Youqi,Inner Mongolia,consist of basalts with pillow and massive structure and dacites.The SiO2 content of the volcanic rocks mainly fallen in two ranges 48.20%-51.11% and 64.66%-65.42%,showing a bimodal distribution composition.The mafic volcanic rocks are mainly alkaline basalt series,with Na-rich and potassium-deficient.The felsic volcanic rocks belong to calc-alkaline series with high alkali content and about 3% K2 O content.Th... |
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| Keywords: | Solonker suture zone bimodal volcanic rocks pillow basalt Late Carboniferous Sonid Youqi |
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