【摘要】 文章运用电感耦合等离子体质谱 (ICP_MS)方法 ,研究了金青顶金矿床和七宝山金矿床的脉石英中流体包裹体REE组成特征。结果表明流体包裹体的REE均为LREE富集型 ,并显示Eu正异常。成矿流体REE配分模式和REE参数特征表明它们具有相同的来源。与金矿有关的成矿母岩 ,即昆嵛山花岗岩和七宝山次火山岩的REE特征也极为相似 ,反映成矿流体的REE组成都有从成岩向成矿过程演化继承的关系。矿床流体包裹体REE组成的相似特征及矿床碳氧同位素等特点表明 ,金青顶金矿床和七宝山金矿床是华北东部中生代同一构造热事件的产物更多还原

【Abstract】 The Jinqingding gold deposit and the Qibaoshan gold deposit are known as a typical vein gold deposit and a sub_volcanic gold deposit, respectively, in Jiaodong area. Fluid inclusions in quartz of both gold deposits can be classified into two species: aqueous inclusions and CO 2_rich inclusions. Daughter minerals in the Qibaoshan gold deposit are Fe_, Mg and Mn_bearing carbonate, as shown by SEM/EDS. REE and trace elements in fluids in quartz are determined by ICP_MS. The data show that the fluids are enriched in LREE with a positive Eu anomaly. Chondrite_normalizied REE patterns show that they have the same origin （crust_mantle source） and their REE parameter characteristics are quite similar to those of their mother rocks, indicating that REE in fluids assumes the evolutive relations between mother rock and ore fluids. The abnormal trace element compositions of ore_forming fluids are very similar in the Jinqinding and in the Qibaoshan. The δ 13 C PDB values range from ₆‰ to 0‰, and the δ 18 O SMOW values vary from 7‰ to 13‰, suggesting that the gold deposits in Jiaodong area were probably formed by the same Mesozoic tectonic movement and deep thermal event in eastern North China region.更多还原