| 内蒙古色日崩地区白音高老组流纹岩岩石地球化学特征及地质意义 |
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| 引用本文： | 杨文静,程天赦,王登红,肖盈,张全.内蒙古色日崩地区白音高老组流纹岩岩石地球化学特征及地质意义[J].地质与资源,2013,22(1):30-35. |
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| 作者姓名： | 杨文静 程天赦 王登红 肖盈 张全 |
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| 作者单位： | 1. 天津市地质调查研究院, 天津 300191;2. 中国地质大学地球科学与资源学院, 北京 100083;3. 中国地质科学院矿产资源研究所, 北京 100083;4. 中原油田普光分公司采气厂, 四川 达州 636156 |
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| 基金项目： | 中国地质调查局1/5万扎布其尔沃布勒吉幅、杰林牧场幅、白音诺尔农场幅、巴拉嘎尔牧场牧业小组幅、毛登牧场第二生产队幅区域地质调查项目(基[2010]矿评01-19-01)资助 |
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| 摘 要： | 内蒙古西乌旗色日崩地区早白垩世白音高老组流纹岩为高硅（SiO2=78.32%~86.80%）、富碱（K2O+Na2O=3.84%~7.63%）、高铝（Al2O3=8.59%~13.70%），低MgO、CaO、TiO2、MnO，稀土元素与微量元素地球化学特征显示其类似于A型花岗岩特征；低Ti/Y、Nb/Y与Ti/Zr比值，高Rb/Nb与Rb/Y比值以及Sr、Eu强烈亏损，表明白音高老组流纹岩为上地壳物质部分熔融成因，形成于早白垩世非造山板内伸展环境.
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| 关 键 词： | 钙-碱性流纹岩 A型花岗岩 地球化学 白音高老组 西乌旗 内蒙古 |
| 收稿时间： | 2012-03-12 |
GEOCHEMICAL CHARACTERISTICS AND GEOLOGICAL IMPLICATION OF THE RHYOLITE IN BAIYINGAOLAO FORMATION FROM SERIBENG, INNER MONGOLIA |
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| YANG Wen-jing
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CHENG Tian-she
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WANG Deng-hong
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XIAO Ying
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ZHANG Quan.GEOCHEMICAL CHARACTERISTICS AND GEOLOGICAL IMPLICATION OF THE RHYOLITE IN BAIYINGAOLAO FORMATION FROM SERIBENG, INNER MONGOLIA[J].Geology and Resources,2013,22(1):30-35. |
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| Authors: | YANG Wen-jing CHENG Tian-she WANG Deng-hong XIAO Ying ZHANG Quan |
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| Institution: | 1. Tianjin Institute of Geological Survey, Tianjin 300191, China;2. School of Earth Sciences and Resources, China University of Geosciences, Beijing 100083, China;3. Institute of Mineral Resources, Chinese Academy of Geological Sciences, Beijing 100083, China;4. Puguang Gas Plant, Zhongyuan Oilfield, Dazhou 636156, Sichuan Province, China |
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| Abstract: | The rhyolite in Early Cretaceous Baiyingaolao Formation from Seribeng of Xiwuqi,Inner Mongolia is characterized by high SiO2(78.32% to 86.80%),total alkaline-rich(3.84% to 7.63% of K2O+Na2O),high Al2O3(8.59% to 13.70%),low MgO,CaO,TiO2 and MnO.The geochemical characteristics of REE and trace elements are similar to those of A-type granite.The characteristics of low Ti/Y,Nb/Y and Ti/Zr,high Rb/Nb and Rb/Y and strong depletion in Sr and Eu indicate that the rhyolitic magma was originated from partial melting of basaltic upper crustal materials.Combining with the regional researching results,it is suggested that the rhyolite was formed in an intra-plate anorogenic extensional setting. |
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| Keywords: | calc-alkaline rhyolite A-type granite geochemistry Baiyingaolao Formation Inner Mongolia |
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