| 安徽铜陵大团山铜矿床层状矽卡岩矿体中辉钼矿Re-Os年龄测定及其地质意义 |
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| 关键词:Re-Os isotopic age Datuanshan copper deposit Tongling Anhui Province |
| 基金项目:国家重点基础研究发展规划项目（编号：G1999043211）;国土资源部专项研究计划项目（编号：20010103）;中国地质调查局地质调查项目（编号：K1.4-3-3） |
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| Re-Os Dating of Molybdenite from Stratiform Skarn Orebodies in the Datuanshan Copper Deposit, Tongling, Anhui Province, and Its Geological Significance |
| The Datuanshan copper deposit in Tongling, Anhui Province, is located in the middle section of the Middle and Lower Yangtze Valley iron-copper metallogenic belt. The metallogenic epoch of the deposit was previously regarded as Yanshanian on the basis of the ages of intermediate-acid intrusive rocks related to the ore-forming process. The authors collected 6 molybdenite samples from stratiform skarn orebodies in the Datuanshan copper deposit for Re-Os precise dating. The isochron age is 139.1±2.7 Ma, and the Re-Os model ages vary from 138.0～140.8 Ma. These age data are concordant with 40Ar/39Ar ages, 135.8～139.8 Ma, of the ore-forming intermediate-acid intrusive rocks. The Datuanshan copper deposit and the copper-sulfur-gold deposits in Tongling area are products of Mesozoic large-scale metallogenic process in East China, coupling with the geodynamic event of the lithospheric tectonic regime transition. |
| MEI Yan-xiong,MAO Jing-wen,LI Jin-wen,DU An-dao.2005.Re-Os Dating of Molybdenite from Stratiform Skarn Orebodies in the Datuanshan Copper Deposit, Tongling, Anhui Province, and Its Geological Significance[J].Acta Geoscientica Sinica,26(4):327-331. |
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