| Sources and Thermo-Chemical Sulfate Reduction for Reduced Sulfur in the Hydrothermal Fluids, Southeastern SYG Pb-Zn Metallogenic Province, SW China | |
| Zhou Jiaxi; Huang Zhilong; Bao Guangping; Gao Jianguo | |
| 2013 | |
| Source Publication | Journal of Earth Science
 |
| Volume | 24Issue:5Pages:759-771 |
| Abstract | Located on the western Yangtze Block, the Sichuan ()-Yunnan (M)-Guizhou (SYG) Pb-Zn metallogenic province has been a major source of base metals for China. In the southeastern SYG province, structures are well developed and strictly control about 100 Pb-Zn deposits. Almost all the deposits are hosted in Devonian to Permian carbonate rocks. Lead-zinc ores occur either as veinlets or disseminations in dolomitic rocks with massive and disseminated textures. Ore minerals are composed of pyrite, sphalerite and galena, and gangue minerals are calcite and dolomite. Sulfide minerals from four typical Pb-Zn deposits are analyzed for sulfur isotope compositions to trace the origin and evolution of hydrothermal fluids. The results show that delta S-34 values of sulfide minerals range from +3.50%0 to +20.26%0, with a broad peak in +10%0 to +16%0, unlike mantle-derived sulfur (0 +/- 3%0). However, the mean delta S-34 sulfide and delta(83)Ssfluids values are similar to that of sulfate-bearing evaporites in the host rocks (gypsum: similar to+15%0 and barite: +22%0 to +28%0) and Cambrian to Permian seawater sulfate (+15%0 to +35%0). This suggests that reduced sulfur in hydrothermal fluids was likely derived from evaporates in the host rocks by thermo-chemical sulfate reduction (TSR). Calculated delta S-34 Sigma S-fluid, values of the Shanshulin (), Qingshan (*LW, Shaojiwan (ffX/4) and Tianqiao () Pb-Zn deposits are +21.59%0, +18.33%0, +11.43%0 and +10.62%0, respectively, indicating sulfur-bearing hydrothermal fluids may be evolved from the Shanshulin to Qingshan and then the Shaojiwan to Tianqiao deposition sites along the Yadu ()-Ziyun lithospheric fracture in the southeastern SYG province. |
| Keyword | Sulfur Isotope Hydrothermal Fluid Tsr Southeastern Syg Province Sw China |
| Subject Area | 矿床地球化学 |
| Indexed By | SCI |
| Language | 英语 |
| Document Type | 期刊论文 |
| Identifier | http://ir.gyig.ac.cn/handle/352002/4998 |
| Collection | 矿床地球化学国家重点实验室_矿床地球化学国家重点实验室_期刊论文 |
| Recommended Citation GB/T 7714 | Zhou Jiaxi,Huang Zhilong,Bao Guangping,et al. Sources and Thermo-Chemical Sulfate Reduction for Reduced Sulfur in the Hydrothermal Fluids, Southeastern SYG Pb-Zn Metallogenic Province, SW China[J]. Journal of Earth Science,2013,24(5):759-771. |
| APA | Zhou Jiaxi,Huang Zhilong,Bao Guangping,&Gao Jianguo.(2013).Sources and Thermo-Chemical Sulfate Reduction for Reduced Sulfur in the Hydrothermal Fluids, Southeastern SYG Pb-Zn Metallogenic Province, SW China.Journal of Earth Science,24(5),759-771. |
| MLA | Zhou Jiaxi,et al."Sources and Thermo-Chemical Sulfate Reduction for Reduced Sulfur in the Hydrothermal Fluids, Southeastern SYG Pb-Zn Metallogenic Province, SW China".Journal of Earth Science 24.5(2013):759-771. |
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