鲁西太古代徂徕山杂岩体主要由片麻状花岗岩和钾长花岗岩构成,此外尚发育少量小规模的中粗粒、细粒闪长岩。本文着重讨论花岗质岩石的成因。徂徕山杂岩体岩石地球化学研究表明,片麻状花岗岩为深源(下地壳)花岗质岩浆侵位结晶的产物;钾长花岗岩是片麻状花岗岩在区域变质作用过程中部分熔融形成的,两者具有密切的成因联系。 The Archean Palaeozoic Dalai Mountain complex mainly consists of gneissic granite and potash-bearing granite. In addition, a small amount of medium-sized and coarse-grained diorite is developed. This article focuses on the genesis of granitic rocks. The geochemical study of the Dulaishan complex shows that the gneissic granite is the product of emplacement of the deep source (lower crust) granitic magma. The k-long granite is a gneissic granite partially melted during regional metamorphism The two have close causal relations.