| 黄沙坪铅锌多金属矿成岩成矿年龄测定及地质意义 |
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| 关键词:zircon U-Pb dating melybdenite Re-Os isotopic dating petrogenetic and metallogenic process Huangshaping |
| 基金项目:国家科技支撑计划项目“南岭地区有色—贵金属成矿潜力及综合探测技术示范研究”(编号: 2006BAB01B03)；危机矿山接替资源勘查项目(编号: 200643044)；国家深部探测技术与实验研究专项“南岭成矿带地壳岩浆系统结构探测实验研究”课题(编号: SinoProbe-03-01)；地质大调查项目“南岭大型矿集区深部评价技术方法研究”(编码: 1212010981027) |
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| Petrogenetic and Metallogenic Age Determination of the Huangshaping Lead-Zinc Polymetallic Deposit and its Geological Significance |
| The Huangshaping lead-zinc ore deposit is located in the South Hunan ore concentration area of the Nanling polymetallic metallogenic belt. Since the implementation of the project for exploration of replacement resources in crisis mines, two ore deposits have been found: one is a Fe-W-Sn polymetallic deposit whose metal reserves have reached the large-sized ore deposit, and the other is a Cu polymetallic deposit whose metal reserves have attained medium size. These achievements provide abundant information for the study of ore deposits. Based on data available, the authors carried out a study of the zircon U-Pb age of the granite porphyry and the molybdenum mineralization age. It is shown that the quartz porphyry zircon U-Pb weighted isochron age is 152.3±3 Ma, and the molybdenite Re-Os isochrone ages are 159.4±3.3 Ma, 157.5±2.4 Ma and 157.6±2.3 Ma (dated at different positions of the same 56 m elevation). These data provide important evidence for collating and stipulating the multi-period and multi-phase rock-forming and ore-forming characteristics of the Huangshaping lead-zinc deposit. |
| LEI Ze-heng,CHEN Fu-wen,CHEN Zheng-hui,XU Yi-ming,Gong Shu-qing,LI Hua-qin,MEI Yu-ping,QU Wen-jun,WANG Deng-hong.2010.Petrogenetic and Metallogenic Age Determination of the Huangshaping Lead-Zinc Polymetallic Deposit and its Geological Significance[J].Acta Geoscientica Sinica,31(4):532-540. |
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