Full-Text Search:
Home|Journal Papers|About CNKI|User Service|FAQ|Contact Us|中文
《Geoscience》 2018-01
Add to Favorite Get Latest Update

Sulfur and Lead Isotopic Compositions of the Pusangguo Cu-Pb-Zn Polymetallic Deposit in Tibet: Implications for the Source of Ore-forming Material

LI Zhuang;WANG Liqiang;LI Haifeng;DANZHEN Wangxiu;SHI Shuo;MLR Key Laboratory of Metallogeny and Mineral Resource Assessment,Institute of Mineral Resources,Chinese Academy of Geological Sciences;School of Earth Sciences and Resources,China University of Geosciences;College of Earth Sciences,Chengdu University of Technology;  
The Pusangguo Cu-Pb-Zn polymetallic deposit is located in the southern Gangdese volcanic magma arc,Tibet. The east to west trending skarn orebodies are bedded or lenticular,which mainly occurred in the skarnized marble of Cretaceous Takena Formation. On the basis of previous data and geological investigation,this study systematically analyses the characteristics of sulfur and lead isotopic compositions of sulfides including sphalerite,galena,chalcopyrite,and pyrite to discuss the source of ore-forming materials. The results show that the δ~(34) S values of sulfides range from -2. 4‰ to 1. 0‰,averaging -0. 40‰,with the tower distribution features,indicating that the sources of sulfur have magma-derived sulfur features and is related to the dioriticporphyrite.~(206)Pb/~(204)Pb ratios of sulfides vary from 18. 344 to 18. 625,averaging 18. 555;~(207)Pb/~(204)Pb ratios range from 15. 549 to 15. 794,averaging 15. 716;~(208)Pb/~(204)Pb ratios are between 38. 12 and 39. 34,averaging 39. 044. The lead isotopic compositions are stable and belong to the normal lead. Combining the μ values with the tectonic evolution diagram of lead isotope,it can be concluded that the lead is primarily sourced from the upper crust with minor involvement of mantle-derived materials.
【Fund】: 国家自然科学基金项目“西藏浦桑果矽卡岩型铜多金属矿床富Co机制研究”(41403040)
【CateGory Index】: P618.2
Download(CAJ format) Download(PDF format)
CAJViewer7.0 supports all the CNKI file formats; AdobeReader only supports the PDF format.
©2006 Tsinghua Tongfang Knowledge Network Technology Co., Ltd.(Beijing)(TTKN) All rights reserved