| 鄂东铜绿山矿区石英正长闪长玢岩锆石SHRIMP U-Pb定年及其地质意义 |
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| 关键词:Cu-Au（Fe）deposit zircon SHRIMP U-Pb age Tonglushan geological significance |
| 基金项目:国家科技支撑计划“南岭地区有色-贵重金属成矿潜力及综合探测技术示范研究”(编号:2006BAB01B03); 国土资源大调查“我国重要矿产和区域成矿规律研究”(编号:1212010633903); “中国成矿体系综合研究”(编号:1212010634002) |
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| SHRIMP U-Pb Zircon Dating of the Quartz-Orthoclase Diorite Porphyrite from the Tonglushan Orefield in Eastern Hubei Province and Its Geological Implication |
| Located in the northwestern part of the Echen-Daye-Ruichang metallogenetic belt in the middle and lower reaches of the Yangtze River,the Tonglushan Cu-Au(Fe)deposit occurs in the northwestern segment of the Yangxin quartz-orthoclase diorite porphyrite and lies in 4th-7th Members of the Lower Triassic Daye Group.The porphyrite as the parent rock of Cu-Au(Fe)mineralization is closely related to the deposit.Zircon SHRIMP U-Pb age of(146±1)Ma(95% confidence,MSWD=1.2)shows that the porphyrite was formed in the Late Jurassic-Early Cretaceous period.According to the fact that contact metasomatic mineralization took place simultaneously with the crystallization of mineralized intrusion,it is concluded that the Tonglushan skarn type Cu-Au(Fe)deposit was also formed in the Late Jurassic-Early Cretaceous period. |
| MEI Yu-ping,LI Hua-qin,CHEN Fu-wen.2008.SHRIMP U-Pb Zircon Dating of the Quartz-Orthoclase Diorite Porphyrite from the Tonglushan Orefield in Eastern Hubei Province and Its Geological Implication[J].Acta Geoscientica Sinica,29(6):805-810. |
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