现代地质2011，Vol.25Issue(5)：869-876,8.
西藏墨竹工卡县洞中拉铅锌矿床S、Pb同位素组成及成矿物质来源
Sulfur and Lead Isotope Composition and Tracing for Sources of Ore-forming Materials in the Dongzhongla Pb-Zn Deposits in Mozhugongka County, Tibet
摘要
Abstract
In order to discuss the ore-forming material sources of the Dongzhongla Pb-Zn deposits and study the metallogenic mechanism, we analyzed the sulfur and lead isotope from the orebody, discussed the changing regularity and significance. The results show that the δ34S values of the six metal sulfides vary from 2. 2%c to 4. 8%e, and that the sulfur isotope composition is stable. The temperatures calculated from sulfide-paras show that the deposits are the middle-low temperature deposits. The 206Pb/204Pb,207Pb/204Pb and 208Pb/204 Pb ratios of 6 sulfide samples of orebody vary in ranges of 18.628 0 - 18.629 6, 15. 698 - 15. 699 9, 39.0775 -39. 082 4, with the average values of 18. 628 7, 15. 699 02 and 39. 079 37, respectively. The results of sulfur and lead isotope show that the ore-forming materials of Dongzhongla Pb-Zn deposits came from the Permian volcanic sedimentary rock and late Yanshan period granite.关键词
S、Pb同位素/成矿物质来源/洞中拉铅锌矿床/热液矿床/δ34S值/上地壳物质Key words
sulfur and lead isotope/ ore-forming material source/ Dongzhongla lead-zinc deposits/ hydrothermal deposit/ δ34S value/ upper crust material分类
天文与地球科学引用本文复制引用
刘婷婷,唐菊兴,刘鸿飞,张金树,崔晓亮,高一鸣..西藏墨竹工卡县洞中拉铅锌矿床S、Pb同位素组成及成矿物质来源[J].现代地质,2011,25(5):869-876,8.基金项目
中国地质调查局项目"念青唐古拉地区成矿条件研究与找矿靶区优选"(1212010818089) （1212010818089）
国家科技支撑项目"中西部大型矿产基地综合勘查技术与示范"(2006BAB01A01). （2006BAB01A01）
