| 塔里木盆地西克尔萤石地球化学特征及成因讨论 |
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| 引用本文： | 饶红娟,罗平,阳正熙,周刚,宋金民.塔里木盆地西克尔萤石地球化学特征及成因讨论[J].沉积学报,2010,28(4):821-831. |
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| 作者姓名： | 饶红娟 罗平 阳正熙 周刚 宋金民 |
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| 作者单位： | 成都理上大学能源学院,成都,610059;中国石油勘探开发研究院,北京,100083;中国石油勘探开发研究院,北京,100083;成都理上大学能源学院,成都,610059;成都理上大学沉积地质研究院,成都,610059 |
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| 基金项目： | 国家重点基础研究发展规划 |
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| 摘 要： | 通过对塔里木盆地西克尔地区萤石矿及赋矿围岩进行地球化学分析，探讨该区萤石矿成因。研究表明，萤石矿物稀土元素配分模式图表现出轻稀土元素相对富集，正铕异常特点；微量元素分析显示Eu、Sr、Ba具有相关性；Sr同位素比值与围岩相近。最终认为萤石矿成矿流体主要来自于加热的盆地卤水，微量（包括稀土）元素来自下伏地层及围岩，Ba、Eu、F等元素可能来自下寒武统硅质岩及磷块岩。
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| 关 键 词： | 塔里木 萤石 稀土元素 正铕异常 热水沉积 |
| 收稿时间： | 1900-01-01 |
Geochemistry of Fluorite and Its Genesis in Sickl Area, Tarim Basin |
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| RAO Hong-juan,LUO Ping,YANG Zheng-xi,ZHOU Gang,SONG Jin-min.Geochemistry of Fluorite and Its Genesis in Sickl Area, Tarim Basin[J].Acta Sedimentologica Sinica,2010,28(4):821-831. |
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| Authors: | RAO Hong-juan LUO Ping YANG Zheng-xi ZHOU Gang SONG Jin-min |
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| Institution: | Energy School, Chengdu University of Technology, Chengdu 610059 |
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| Abstract: | Geochemistry of fluorite deposits and its ore rocks in Sickl area, Tarim Basin is applied to investigate the ingenesis. The study shows that: relative LREE concentration and positive Eu anomaly are resulted from REE distribution pattern diagrams of fluorite; Eu, Sr and Ba are related closely in trace element analysis; the isotope ratio of Sr in fluorite is close to that in surrounding rocks. Conclusions are: ore forming fluids of the fluorite mainly are from the infiltration of heated basin brine ; trace elements(including REE) are from underlying strata and surrounding rocks; and elementsF, Ba, Eu are from Lower Cambrian siliceous rocks and phosphorite. |
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