Ore-forming age and the geodynamic background of the hetaoping lead-zinc deposit in baoshan, yunnan.
文献类型：期刊论文
| 作者 | Tao Yan1; Hu RuiZhong1; Zhu FeiLin1,2; Ma YanSheng1,3; Ye Lin1,2; Cheng ZengTao1,3 |
| 刊名 | Acta petrologica sinica
 |
| 出版日期 | 2010-06-01 |
| 卷号 | 26期号:6页码:1760-1772 |
| ISSN号 | 1000-0569 |
| 关键词 | Baoshan block Hetaoping ph-zn deposit Late-yanshanian granite Zircon u-pb age Hf isotope |
| 通讯作者 | Tao yan(taoyan@vip.gyig.ac.cn) |
| 英文摘要 | Baoshan block hosts a range of fe, cu, pb, zn, ag, hg, sn deposits. the hetaoping pb-zn-cu deposit is a typical one hosted in paleozoic carbonites. the mineralization types include cu-rich skarn copper, skarn magnetite, hydrothermal pb-zn deposit. the deposit has at least 1 x 10(6)t of zn and pb metal as well as potential 1 x 10(6)t of cu metal evaluated by exploration department. skarns and gabbroic dykes are common in this district, but silicic intrusions and stocks occur outside the mine. 10 sulfide mineral separates including sphalerite, chalcopyrite, pyrite, and paragenous related quartz were separated by hand picking. rb-sr analyzes yield isochron age of 116.1 +/- 3.9ma and an initial (87)sr/(86)sr of 0.71185. in addition, we have analyzed zircon u-pb and hf isotope for zhibenshan and kejie granite in baoshan block by la-icpms. the analyzes yield ages of 126.7 +/- 1.6ma and 93 +/- 13ma, respectively. it suggests a temporal relationship of the mineralization to the local silicic magmatism in late-yanshanian and contemporaneous with closure of the bangong-lujiang paleo-ocean. zhibenshan and kejie granites are high-k and peraluminious. hf isotope analyzes reveals the zircons of the zhibenshan granite have epsilon(hf)(i) between -3 and -8, t(dm2) (hf) values between 1.4 and 1.6ga, while the kejie granite zircons have epsilon(hf)(i) between -0.7 and -4, and t(dm2)(hf) values between 1.2 and 1.4ga. it suggests that the granites are related to the crustal anatexis of the proterozoic basement, in stead of melting of juvenile subduction material in late-yanshanian. together with the composition of the granites which are most likely to be the derived melts of metagreywackes, it can be concluded that the silicic magmatism is related to melting of metagreywacke which induced by lithospheric stretching in thickened continental orogenic belt. peraluminious granites related with crustal anatexis, gabbro dykes related with lithospheric stretching and skarn-magmatic hydrothermal deposits constitute a geological association in the early-cretaceous mineralization in baoshan block. it is responsible to the closure of the meso-tethys "lujiang" ocean. the hetaoping ph-zn deposit is an important mineralization type in the complex sanjiang orogenic setting. |
| WOS关键词 | HF ISOTOPIC COMPOSITION ; ZN-PB DEPOSIT ; WESTERN YUNNAN ; RB-SR ; TECTONIC IMPLICATIONS ; SW CHINA ; SOUTHERN LANCANGJIANG ; FLUID INCLUSION ; ZIRCON AGE ; ND |
| WOS研究方向 | Geology |
| WOS类目 | Geology |
| 语种 | 英语 |
| 出版者 | SCIENCE CHINA PRESS |
| WOS记录号 | WOS:000279740400011 |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2414545 |
| 专题 | 中国科学院大学 |
| 通讯作者 | Tao Yan |
| 作者单位 | 1.Chinese Acad Sci, Inst Geochem, State Key Lab Ore Deposit Geochem, Guiyang 550002, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China 3.E China Mineral Explorat & Dev Bur, Nanjing 210007, Peoples R China |
| 推荐引用方式 GB/T 7714 | Tao Yan,Hu RuiZhong,Zhu FeiLin,et al. Ore-forming age and the geodynamic background of the hetaoping lead-zinc deposit in baoshan, yunnan.[J]. Acta petrologica sinica,2010,26(6):1760-1772. |
| APA | Tao Yan,Hu RuiZhong,Zhu FeiLin,Ma YanSheng,Ye Lin,&Cheng ZengTao.(2010).Ore-forming age and the geodynamic background of the hetaoping lead-zinc deposit in baoshan, yunnan..Acta petrologica sinica,26(6),1760-1772. |
| MLA | Tao Yan,et al."Ore-forming age and the geodynamic background of the hetaoping lead-zinc deposit in baoshan, yunnan.".Acta petrologica sinica 26.6(2010):1760-1772. |
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来源：中国科学院大学
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