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老君山正长岩锆石SHRIMP定年

, PP. 522-526

Keywords: SHRIMPⅡU-Pb年龄,锆石,正长岩,老君山,云南省

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Abstract:

老君山正长岩锆石SHRIMP定年结果为34.8±1.6Ma(2σ),MSWD=0.38(可信度为0.96),相当于渐新世,属于喜马拉雅期。通过锆石定年分析结果对其成岩时代及锆石的成因进行探讨。

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