Re-Os Geochronology of Molybdenite from Yuanzhuding Porphyry Cu-Mo Deposit in South China
作者： Lifeng Zhong , Liwen Liu , Bin Xia , Jie Li , Xiuguang Lin
DOI: 10.1111/J.1751-3928.2010.00143.X
关键词:
摘要: The Yuanzhuding porphyry Cu-Mo deposit, discovered in 2008, is located within the southern segment of Chenzhou-Huaiji fault belt, South China. deposit hosted Upper Cambrian neritic facies sandstone and shale formation that strata axis wings anticline. Both exo-contact zone contain mineralization. Economic orebodies occur mainly around porphyry. We dated 11 molybdenite samples obtained from two borehole cores using Re-Os method. Analyses eight ZK12-112 yield a isochron age 157.3 ± 4.3 Ma (2σ), analyses boreholes ZK16-104 155.6 3.4 Ma (2σ). These ages are error model ages, demonstrating results reliable formed during late Middle Jurassic. similar to intermediate-acid rocks W-Sn polymetallic deposits along belt. This concordance suggests same geodynamic process igneous activity related mineralization, raising potentiality mineralization
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