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据~(40)Ar-~(39)Ar测年,确定安徽沙溪含铜(金)斑岩体为早白垩世岩浆活动产物。Sr,Nd同位素数据及岩石化学资料显示,该岩体的成因与邻区侵入岩体存在明显差异,它可能是受部庐断裂活动所控制。这说明斑岩型铜(金)矿化可能主要沿郯庐断裂带及其分支断裂发育。今后找矿应沿郯庐断裂带及其分支断裂进行。
According to ~ (40) Ar- ~ (39) Ar dating, the copper-bearing porphyry in Shaxi, Anhui Province was determined as the product of the Early Cretaceous magmatic activity. Sr, Nd isotope data and petrochemical data show that the genesis of this rock mass is obviously different from the intrusive rock mass in the adjacent area, which may be controlled by the activity of the Bulu fault. This indicates that porphyry copper (gold) mineralization may be mainly along the Tan-Lu fault zone and its branch development. In the future prospecting should be carried out along the Tan-Lu fault zone and its branches.