| 北天山西段喇嘛苏铜矿中酸性岩体岩石化学特征及其地质意义 |
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| 引用本文： | 毛政利,成功,赖健清,彭省临.北天山西段喇嘛苏铜矿中酸性岩体岩石化学特征及其地质意义[J].地质找矿论丛,2018,33(1):93-99. |
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| 作者姓名： | 毛政利 成功 赖健清 彭省临 |
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| 作者单位： | 百色学院管理科学与工程学院;中南大学有色金属成矿预测教育部重点实验室;中南大学地球科学与信息物理学院; |
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| 基金项目： | 国家自然科学基金项目（编号：41171342）资助。 |
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| 摘 要： | 喇嘛苏铜矿区中酸性岩体的皮科克指数、里特曼指数、赖特指数,均指示其中酸性岩体属于钙碱性岩系的范围;分异指数平均值为77.57,说明岩体的分异演化程度较为彻底;固结指数平均值为12.01,显示出岩体的岩浆分异程度较高;长英指数和铁镁指数均反映岩体的分离结晶作用程度中等。在MF—FL分异趋势图上,样品点基本呈连续分布,说明岩体的演化是连续的;在w(Na_2O)—w(K_2O)关系图上多数样品点落入I型花岗岩区域,可以认为本区花岗岩应为I型花岗岩。岩体的TiO_2含量平均为w(TiO_2)=0.28%,远低于中国及世界同类岩石;在戈蒂尼指数与里特曼指数对数值的关系图上,几乎所有的样品点均落在消减带火山岩区,由此可以推断,本区斑岩体应形成于与俯冲作用有关的消减带上。在多阳离子的R1—R2关系图中,多数样品点落在地壳熔融花岗岩-同碰撞的花岗岩区,少数样品点落在其它区域,这说明了岩浆在演化过程中同化混染了围岩。
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| 关 键 词： | 喇嘛苏铜矿 中酸性岩体 结晶环境 分异演化 消减带 北天山西段 新疆 |
| 收稿时间： | 2016/12/1 0:00:00 |
Petrochemical Characteristics and Its Geological Significance of the Acid-intermediate Intrusive Bodies in Lamasu Copper Deposit in the western section of north Tianshan Mountain |
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| MAO Zhengli,CHENG Gong,LAI Jianqing and PENG Shenglin.Petrochemical Characteristics and Its Geological Significance of the Acid-intermediate Intrusive Bodies in Lamasu Copper Deposit in the western section of north Tianshan Mountain[J].Contributions to Geology and Mineral Resources Research,2018,33(1):93-99. |
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| Authors: | MAO Zhengli CHENG Gong LAI Jianqing and PENG Shenglin |
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| Institution: | School of Management Science and Engineering, Baise University, Baise 533000, Guangxi, China,Key Laboratory of Metallogenic Prediction of Nonferrous Metals, Ministry of Education, Central South University, Changsha 410083, China;School of Geosciences and Info-Physics, Central South University, Changsha 410083, China,Key Laboratory of Metallogenic Prediction of Nonferrous Metals, Ministry of Education, Central South University, Changsha 410083, China;School of Geosciences and Info-Physics, Central South University, Changsha 410083, China and Key Laboratory of Metallogenic Prediction of Nonferrous Metals, Ministry of Education, Central South University, Changsha 410083, China;School of Geosciences and Info-Physics, Central South University, Changsha 410083, China |
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| Abstract: | |
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| Keywords: | Lamasu Cu deposit acid-intermediate intrusive bodies crystallographic environment differentiation and evolution subduction zone the western section of north Tianshan Mountain Xinjiang |
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