| 西藏扎布耶盐湖超大型B、Li矿床成矿物质来源研究 |
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| 引用本文： | 刘喜方,郑绵平,齐文.西藏扎布耶盐湖超大型B、Li矿床成矿物质来源研究[J].地质学报,2007,81(12):1709-1715. |
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| 作者姓名： | 刘喜方 郑绵平 齐文 |
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| 作者单位： | 国土资源部盐湖资源与环境重点实验室,北京,100037;中国地质科学院矿产资源研究所,北京,100037;中国地质科学院盐湖与热水资源研究发展中心,北京,100037 |
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| 基金项目： | 国家自然科学基金项目(编号49672115)资助的成果 |
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| 摘 要： | 扎布耶盐湖位于西藏高原腹地,是一个现代盐湖矿床。对扎布耶地区地球化学背景的研究表明:变质岩及蚀变岩石中硼锂含量很高以及电气石脉的出现,暗示着扎布耶地区深部曾产生含硼锂高的热流体;沉积岩中除晚石炭世砂岩含硼锂稍高外,其他岩石均低于同类岩石的平均含量;火山岩中除早白垩世基性岩的硼锂含量高于基性岩平均含量外,其他均很低;该区大量发育的第四纪钙华含硼锂非常高,表明早期的热水系统曾提供过大量的成矿物质;河流及泉水中的硼锂含量是世界河水平均含量的数倍至数百倍,表明地表和近地表条件下的水-岩相互作用的产物也是成矿物质来源之一。
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| 关 键 词： | 西藏扎布耶 B、Li矿床 地球化学背景 成矿物质来源 |
| 收稿时间： | 2007-09-07 |
| 修稿时间： | 2007-10-22 |
Sources of Ore-Forming Materials of the Superlarge B and Li Deposit in Zabuye Salt Lake,Tibet,China |
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| LIU Xifang,ZHENG Mianping,QI Wen.Sources of Ore-Forming Materials of the Superlarge B and Li Deposit in Zabuye Salt Lake,Tibet,China[J].Acta Geologica Sinica,2007,81(12):1709-1715. |
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| Authors: | LIU Xifang ZHENG Mianping QI Wen |
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| Abstract: | Located in the interior of the Tibetan Plateau,Zabuye Salt Lake is a modern salt lake deposit.Study of the geochemistry of the Zabuye Salt Lake area indicates that:very high Li and B contents and appearance of tourmaline veins in metamorphic rocks and altered rocks imply lithium-and boron-rich hydrothermal fluids occurred at depths in the Zabuye area;the Li and B contents in sedimentary rocks of all ages are lower than the average contents of their analogues except for Late Carboniferous sandstone which has slightly higher lithium and boron contents;the Li and B contents in volcanic rocks are lower than the average contents in basic igneous rocks except for Early Cretaceous basic igneous rocks which have higher lithium and boron contents;Quaternary travertine,which occurs in large amount in the area,has very high lithium and boron contents,which suggests that the early-stage hydrothermal system afforded substantial amounts of ore-forming materials such as lithium and boron;the lithium and boron contents in rivers and springs are a few to a few hundred times the average contents of the world river water,suggesting that the product of water-rock interaction at the surface and in the subsurface is also one of the sources of ore-forming materials. |
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| Keywords: | Zabuye Tibet B and Li deposit geochemical setting ore-forming materials |
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