%0 Journal Article
%T 西藏查藏错铜铅锌矿床成因：C-H-O-S-Pb同位素制约<br>Genesis of Chazangcuo Cu-Pb-Zn Deposit, Tibet: Constraints from C-H-〇一S-Pb Isotope Geochemistry
%A 姜军胜’
%A 郑有业’
%A 
%A 高顺宝’
%A 徐 J争’
%A 田 坎’
%A 黄亮亮’
%A 张永超’
%A 尹胜记&lt
%A br&gt
%A Jiang Junsheng'
%A Zheng Youye''·
%A Gao Shunbao'
%A Xu Jing'
%A Tian Kan'
%A Huang Liangliang'
%A Zhang Yongchao'
%A Yun Sunggi
%J 地球科学(中国地质大学学报)
%D 2015
%R 10. 3799/dqkx. 2015. 084
%X 查藏错铜铅锌矿床是近年来在冈底斯成矿带北亚带西部林子宗群火山岩中发现的一个铜多金属矿床．到目前为止，对 其矿床成因还缺乏明确的认识．Ｃ、Ｈ、Ｏ、Ｓ、Ｐｂ同位素分析结果表明：δ１３ＣＶＰＤＢ值为－５．６０‰ ～ －２．４０‰，δＤＶＳＭＯＷ 值为 －１１１．００‰～－６８．００‰，δ１８ＯＶＳＭＯＷ值为－８．６５‰～０．２７‰，显示成矿流体早期主要来自岩浆热液，后期大气降水有所混入． δ３４ＳＣＤＴ值集中分布在０．５０‰～２．５０‰，具塔式分布特征，表明硫的来源为相对单一的岩浆源．Ｐｂ同位素比值较为稳定，μ 值较 大（＞９．５８），具有上地壳铅源的特征，与冈底斯成矿带北亚带矿床矿石硫化物的铅同位素特征比较相似，但明显不同于典中组 火山岩的铅同位素特征，推测成矿物质主要来自上地壳的岩浆源．结合矿床地质特征，并与国内外典型岩浆热液脉型矿床对 比，认为其属岩浆热液脉型矿床．<br>Chazangcuo Cu-Pb-Zndeposit, hosted by the Linzizong Group volcanic rocks in the west of Gangdese meta11ogenic belt, is a copper polymeta11ic deposit discovered in recent years. So far, the genesis of the deposit is sti11 lack of clear under- standing. The results of C, H, 〇, S, Pb isotopic analysis show that thep3Cv_pDB values range from-5. 60%o to-2. 40%o, an_sM()w values range from-111.00%o to-68. 00%o, andl1118〇v,_sM(1w values range from-8. 65%o to 0. 27%o, indicating that the ore-forming fluid mainly derived from the magma hydrotherma1 in the early time, however, with the mineralization continu- ing, the proportion of atmospheric precipitation gradua11y turnedlarger. δ31ScDT values range from 0. 50%o to2. 50%o and pos- sess the distribution characteristics of tower, indicating that the sulfur isotope derived from the single magma source. Lead iso- tope ratios are relatively stable and havelargeμ values(more than9. 58), possessing the characteristics of the upper crustlead. Thelead isotope characteristics are similar to the ore sulfides from the deposits in the north subzone of Gangdese meta11ogenic belt, but obviously different from thelead isotope characteristics of volcanic rocks of Dianzhong Formation. Therefore, the au- thors infer that the source of ore-forming materials mainly came from the magmatic source of the upper crust.Combining with the geo1ogica1 characteristics of Chazangcuo deposit, and contrasting the typica1 magmatic hydrotherma1 vein-type deposit at home and abroad, the authors think that it be1ongs to the typica1 magmatic hydrotherma1 vein-type deposit
%K 成矿流体
%K 成矿物质
%K 岩浆热液脉型
%K 矿床
%K 构造.&lt
%K br&gt
%K ore-forming fluid
%K ore-forming materia1
%K magmatic hydrotherma1 vein-type
%K ore deposit
%K tectonics.
%U http://www.earth-science.net/WebPage/Article.aspx?id=3098