| 辽东硼矿区层状混合岩的地质地球化学
特征及其成因探讨 |
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| 引用本文： | 张艳飞.辽东硼矿区层状混合岩的地质地球化学
特征及其成因探讨[J].地质与勘探,2009,45(5):549-557. |
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| 作者姓名： | 张艳飞 |
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| 作者单位： | 辽宁工程技术大学;辽宁省化工地质勘查院; |
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| 基金项目： | 辽宁省国土资源厅基金(2006)项目的资助 |
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| 摘 要： | 辽东硼矿区层状混合岩为含硼岩系的一个重要组成部分,与各种变粒岩和浅粒岩呈整合接触而呈层状展布,在岩性上有过度现象。岩石中交代结构发育;与变质围岩相比,混合岩的SiO2、K2O、Na2O等组分均明显增加,而Fe2O3+FeO、CaO、MgO、MnO等组分明显减少,K2O/Na2O变化较复杂,岩石化学成分的变化与交代作用有关;微量元素具有与围岩相似的特征,稀土元素含量高于围岩,稀土元素配分模式与变粒岩一致,具有典型的重熔特征。这些特征表明层状混合岩是变质围岩经选择重熔交代而形成的。
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| 关 键 词： | 层状混合岩 辽东硼矿区 岩石成因 重熔交代 |
| 收稿时间： | 2009/4/21 0:00:00 |
| 修稿时间： | 7/1/2009 12:00:00 AM |
Study on the Genesis and Geological and Geochemical Characteristics of Layered
Migmatites in East Liaoning, China |
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| ZHANG Yan-fei.Study on the Genesis and Geological and Geochemical Characteristics of Layered
Migmatites in East Liaoning, China[J].Geology and Prospecting,2009,45(5):549-557. |
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| Authors: | ZHANG Yan-fei |
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| Institution: | ZHANG Yan-fei1,2,LIU Jing-dang1,FU Yan-chun2,LI Jian-feng2,ZHANG Jian-hua2,HE Fang-Jun2(1 Liaoning Technical University,Fuxin 123000,2 Liaoning Geological Survey for Chemical Industry,Jinzhou 121000) |
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| Abstract: | The layered migmatites of boron deposit in east Liaoning is an important component part of the boron-bearing strata,which conformably contactes with various granulites and leucolepitites,and shows transition in lithofacies.Residual crossbedding can be observed within transitional layers between striated hornblende migmatites and granulites.There are widely developed metasomatic textures.Compared with the metamorphic well-rocks,the major elements such as SiO2,K2O and Na2O are significantly increased,meanwhil... |
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| Keywords: | the layered migmatites boron deposit in east Liaoning the origin of rocks anatexis and metasomatism |
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