龙文国, 丁式江, 李惠民, 林义华. 海南岛东部黄竹岭地区变质火山岩锆石U-Pb同位素年龄及其地质意义[J]. 地质通报, 2005, 24(1): 92-94.
    引用本文: 龙文国, 丁式江, 李惠民, 林义华. 海南岛东部黄竹岭地区变质火山岩锆石U-Pb同位素年龄及其地质意义[J]. 地质通报, 2005, 24(1): 92-94.
    LONG Wenguo, DING Shijiang, LI Huimin, LIN Yihua. Zircon U-Pb ages of metavolcanic rocks in the Huangzhuling area, eastern Hainan Island, and their geological significance.[J]. Geological Bulletin of China, 2005, 24(1): 92-94.
    Citation: LONG Wenguo, DING Shijiang, LI Huimin, LIN Yihua. Zircon U-Pb ages of metavolcanic rocks in the Huangzhuling area, eastern Hainan Island, and their geological significance.[J]. Geological Bulletin of China, 2005, 24(1): 92-94.

    海南岛东部黄竹岭地区变质火山岩锆石U-Pb同位素年龄及其地质意义

    Zircon U-Pb ages of metavolcanic rocks in the Huangzhuling area, eastern Hainan Island, and their geological significance.

    • 摘要: 海南岛东部黄竹岭地区出露一套中浅变质岩系,其中夹变质火山岩。变质火山岩中存在2组不同成因的锆石,获颗粒锆石U-Pb一致曲线上交点年龄为527Ma±48Ma,可解释为火山岩生成年龄的下限,下交点年龄为230Ma±13Ma,为岩石后期经受变质热事件的年龄。据上述颗粒锆石U-Pb年龄,结合区域地质背景分析,认为变质火山岩的形成年龄介于498.9~(527±48)Ma之间,该套地层形成时代为早古生代。

       

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