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碧口群铜矿床作为早期同生喷流，后期受变质改造的沉积一变质改造型矿床，其保留有同生沉积的纹层构造和后生叠加改造的脉状构造。脉状硫化物Sr同位素及含矿石英脉的Ar同位素定年分别给出329Ma和211．3Ma，说明脉状硫化物的成矿时限在329－211Ma左右。由于该年龄明显小于矿体围岩的Sin－Nd、Rb－Sr年龄，所以该年龄反映了碧口群矿床的后期叠加成矿的时间。
The Bikou Group copper deposit, as an early congruent jet and later metamorphic and altered metamorphism and remolding type deposit, maintains the synsedimentary structure and epigenetic superimposition and remodeling vein structures of the same genesis. The isotopic dating of vein-like sulfide Sr isotopes and ore-bearing quartz veins gives 329Ma and 211.3Ma, respectively, indicating that the ore-forming time of the vein-like sulfide is about 329-211Ma. Since this age is significantly smaller than the Sin-Nd and Rb-Sr ages of the ore bodies, this age reflects the time of post-superimposed mineralization in the Bikou Group.