| 吕向光.内蒙古林西县北三段银铅多金属矿床碳、氧、硫、铅
同位素特征及成矿物质来源[J].地质与勘探,2015,51(5):898-906 |
| 内蒙古林西县北三段银铅多金属矿床碳、氧、硫、铅
同位素特征及成矿物质来源 |
| Characteristics of C, O, S and Pb isotopes and sources of the ore metals of the Beisanduan Ag-Pb polymetallic deposit in Linxi county, Inner Mongolia |
| 投稿时间：2015-06-25 修订日期：2015-08-25 |
| DOI： |
| 中文关键词: 碳、氧、硫、铅同位素 成矿物质来源 北三段银铅多金属矿床 内蒙古 |
| 英文关键词: C, O, S and Pb isotopes, sources of the ore metals, Beisanduan Ag-Pb polymetallic deposit, Inner Mongolia |
| 基金项目: |
|
| 摘要点击次数: 1988 |
| 全文下载次数: 1053 |
| 中文摘要: |
| 本文对内蒙古林西县北三段银铅多金属矿床矿体的碳、氧、硫、铅同位素进行了测定，并对成矿物质来源进行了探讨。矿区样品的δ34S‰变化范围为-0.24‰~2.37‰，平均值为1.29‰，根据其含量，笔者初步认为矿石中的硫主要来源于深部岩浆，并有少量生物还原硫的加入。样品的δ13CPDB变化范围为 -4.57‰~-7.33‰，平均值为-5.96‰，δ18O为-3.4‰~-4.8‰，平均值为-4.06‰，δ13CPDB-δ18OSMOW关系表明，矿体中的碳可能主要由基性-超基性岩浆提供的，并有部分来源于地层，且受大气水影响明显。铅同位素表明北三段矿床的成矿物质可能由地壳造山带和地幔提供。 |
| 英文摘要: |
| This work measured the C, O, S and Pb isotopes of the Beisanduan Ag-Pb polymetallic deposit in Linxi county, Inner Mongolia, and inferred the possible sources of its ore metals. The δ34S values of samples in this deposit range from -0.24‰ to 2.37‰ with an average of 1.29‰. We consider that the sulfur of the ore-forming fluid was derived from hypomagma with addition of biological reduction. The δ13CPDB values of samples range from -4.57‰ to -7.33‰ with an average of -5.96‰. The δ18O values of samples range from -3.4‰ to -4.8‰ with an average of -4.06‰. According to the relationship of δ13CPDB and δ18OSMOW, the carbon of the ore-forming fluid was derived from basic-ultrabasic magma and partly from strata, which is obviously influenced by meteoric water. The lead isotope indicates that of the ore-forming material stemmed from both the crustal orogenic belt and mantle. |
|
查看全文
查看/发表评论 下载PDF阅读器 |
| 关闭 |
