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Sm/Nd同位素定年结果表明,闽北熊山岩墙群杂岩的生成;时代为(585.7±30)Ma;岩墙群杂岩的微量元素及Sr-Nd-Pb同位素地球化学特征表明其形成于弧后盆地构造背景,岩浆源于受俯冲带组分释放富含大离子不相容元素(LILE+LREE)流体交代过的亏损地幔源区.
The results of Sm / Nd isotopic dating show that the age of the Xiongshan dyke swarms in Northern Fujian is (585.7 ± 30) Ma. The trace elements and Sr-Nd-Pb isotopic geochemical characteristics of the dykes swarms indicate that they formed during The back-arc basin tectonic setting is characterized by a depleted mantle source derived from the release of LILE + LREE fluid by subduction zone components.