| 老挝爬立山铁矿二长花岗斑岩地球化学特征及其成矿意义 |
| |
| 引用本文： | 高建华,范文玉,吴振波,王宏.老挝爬立山铁矿二长花岗斑岩地球化学特征及其成矿意义[J].沉积与特提斯地质,2015,35(3):102-108. |
| |
| 作者姓名： | 高建华 范文玉 吴振波 王宏 |
| |
| 作者单位： | 中国地质调查局成都地质调查中心, 四川 成都 610081 |
| |
| 基金项目： | 海上丝绸之路经济带境外矿产资源潜力评价项目(编号12120114018701)、老挝沙耶武里及邻区优势矿产资源潜力调查与分析 |
| |
| 摘 要： | 老挝爬立山铁矿位于长山褶皱带北西端,为一个大型矽卡岩型铁矿床。铁矿化产于二长花岗斑岩的内、外接触带。二长花岗斑岩具有富碱,硅、铝过饱和的特征,属钙碱性岩。微量元素配分模式与正常大陆弧花岗岩类似,稀土配分模式为右倾轻稀土富集型,正铕异常,轻重稀土分馏明显,属下地壳重熔被动侵位形成的"S"型花岗岩。岩体U-Pb年龄为283±2.9Ma,侵位时间为早二叠世。爬立山铁矿床潜在资源量巨大,外围地区具有相同类型铁矿床的找矿远景。
|
| 关 键 词： | 爬立山铁矿 二长花岗斑岩 矽卡岩型 老挝 |
| 收稿时间： | 2015/4/22 0:00:00 |
| 修稿时间： | 2015/6/29 0:00:00 |
Geochemistry and mineralization of the monzonite granite-porphyry from the PhuPhaLek iron deposit, Laos |
| |
| GAO Jian-hu,FAN Wen-yu,WU Zhen-bo,WANG Hong.Geochemistry and mineralization of the monzonite granite-porphyry from the PhuPhaLek iron deposit, Laos[J].Sedimentary Geology and Tethyan Geology,2015,35(3):102-108. |
| |
| Authors: | GAO Jian-hu FAN Wen-yu WU Zhen-bo WANG Hong |
| |
| Institution: | Chengdu Center, China Geological Survey, Chengdu 610081, Sichuan, China |
| |
| Abstract: | The PhuPhaLek iron deposit, Laos in the northwestern part of the Truongson fold belt occurs as a large-sized skarn-type iron deposit. The mineralization occurs within the inner-outer contact zone of monzonite granite porphyries. The monzonite granite porphyries have enriched alkali and oversaturated Si and Al, and are assigned to the calc-alkaline rocks. The trace element distribution patterns are similar to those of the normal continental arc granites. The rare earth element distribution patterns display right-leaning LREE-enriched patterns with positive Eu anomaly and marked fractionation of LREE and HREE, suggesting the "S"-type granites created by the remelting and intrusion of the lower crust melts. The SHRIMP U-Pb age of 283±2.9 Ma indicates that the emplacement took place during the Early Permian. |
| |
| Keywords: | PhuPhaLek iron deposit monzonite granite porphyry skarn-type Laos |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《沉积与特提斯地质》浏览原始摘要信息 |
| 点击此处可从《沉积与特提斯地质》下载免费的PDF全文 |
|
