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| 青海省锡铁山Sedex型铅锌矿床成矿流体来源及演化: 流体包裹体及同位素地球化学证据 | |
| 引用本文： | 王莉娟,彭志刚,祝新友,邓吉牛,王玉往,朱和平.青海省锡铁山Sedex型铅锌矿床成矿流体来源及演化: 流体包裹体及同位素地球化学证据[J].岩石学报,2009,25(11):3007-3015. |
| 作者姓名： | 王莉娟 彭志刚 祝新友 邓吉牛 王玉往 朱和平 |
| 作者单位： | 1. 北京矿产地质研究院,北京,100012;中国科学院地质与地球物理研究所矿物资源研究重点实验室,北京,100029 2. 北京矿产地质研究院,北京,100012 3. 西部矿业有限责任公司,西宁,830001 4. 中国科学院地质与地球物理研究所矿物资源研究重点实验室,北京,100029 |
| 基金项目： | 自然科学基金项目，国家科技攻关项目，973计划2006CB403500项目资助 |
| 摘 要： | 锡铁山铅锌矿床产于青海省柴达木盆地北缘早古生代裂陷的中基性火山-沉积岩系中,是我国规模最大的铅锌矿床之一.流体包裹体的温度、盐度、气液相成分测试以及同位素组地球化学研究证明锡铁山矿床形成于喷流沉积系统.管道相成矿流体以深源为主,深源流体的CO_2等气相组分溢出及深源流体与海水的混合作用导致了成矿物质沉淀,层状矿体中石英岩是管道相向SE方向位移、喷流的结果,锡铁山铅锌矿床是VMS型与Sedex型系统的复合或过度. |
| 关 键 词： | 喷流沉积系统 流体包裹体 深源水 锡铁山铅锌矿 青海省 |
Source and evolution of ore-fluid of the Xitieshan sedimentary-exhalative lead-zinc system, Qinghai province: Evidence from fluid inclusion and isotope geochemistry |
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| WANG LiJuan,PENG ZhiGang,ZHU XinYou,DENG JiNiu,WANG YuWang,ZHU HePing.Source and evolution of ore-fluid of the Xitieshan sedimentary-exhalative lead-zinc system, Qinghai province: Evidence from fluid inclusion and isotope geochemistry[J].Acta Petrologica Sinica,2009,25(11):3007-3015. | |
| Authors: | WANG LiJuan PENG ZhiGang ZHU XinYou DENG JiNiu WANG YuWang ZHU HePing |
| Abstract: | The Xitieshan lead-zinc deposit in Qinghai Province,China occurs in an Early Paleozoic sequence of intermediate-basic volcanic rocks and sediments developed in the northern margin of the Qaidam basin.It is one of the biggest lead-zinc deposits in China.The deposit is evidenced an sedimentary exhalative on system by isotope geochemical study and fluid inclusion measurement including homogenization temperature,salinity and molecular and ion compositions.The ore-forming fluids in feeders were deeply sourced.Escape of deeply-sourced gaseous components such as CO_2 and mixing of deeply-sourced fluids with seawater caused precipitation of ore-forming materials.The quartzites associated with stratiform orebodies are products of the southeastward shifting of feeders.The Xitieshan deposit is a combination of or transition between the Sedex and VMS types. |
| Keywords: | Sedimentary-exhalative system Fluid inclusion Deeply-sourced fluid Xitieshan Pb-Zn deposit Qinghai province |
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