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    TAN Zhong-fu, MA Guo-gan, CHEN Ming-shi, CHEN Ping, HUANG Zhao-xian, JIANG Da-hai. 1991: THE ISOTOPIC AGESOF THE BAOBAN GROUP IN HAINAN AND ITS GEOLOGICAL SIGNIFICANCE. Geological Bulletin of China, (3): 241-245+228.
    Citation: TAN Zhong-fu, MA Guo-gan, CHEN Ming-shi, CHEN Ping, HUANG Zhao-xian, JIANG Da-hai. 1991: THE ISOTOPIC AGESOF THE BAOBAN GROUP IN HAINAN AND ITS GEOLOGICAL SIGNIFICANCE. Geological Bulletin of China, (3): 241-245+228.
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    THE ISOTOPIC AGESOF THE BAOBAN GROUP IN HAINAN AND ITS GEOLOGICAL SIGNIFICANCE

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    • Metavolcanic rocks in the Baoban Group in the central part of Hainan Island have a Sm-Nd isochron age of 975+8.6 and a U-Pb concordia age of 1401+23 Ma. It is preliminarily considered that the Baoban Group is a flysch volcanic-sedimentary formation of Middle Proterozoic age, which is a component part of Cathaysia.
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