Gold veins which have been found in Suntuan area of Qixia city occurs in sub-fault structure with the trend of EW.

• 栖霞孙疃地区已发现金矿(化)脉赋存于近EW向次级断裂构造中,围岩主要是新太古代胶东岩群黑云变粒岩及新元古代震旦期毕郭岩体中粒二长花岗岩。