【摘要】 依据12126个样品求出我国17个地洼区的花岗岩类平均化学成分，并运用富集元素组合的分析方法，讨论各地洼区花岗岩类的大地构造岩石化学类型和区域岩石化学特征。不但指出其区域差异性，而且还指出其若干区域分布规律性，以及有关南北地洼区的特性问题。更多还原

【Abstract】 The average chemical composition of granitoids in 17 diwa regions are calculated with their 12 126 samples.Their geotectono－ petrochemical types and regional petrochemical characteristics are discussed detailed by the analitic method of their association of enriched major elements.Their regional differences and their several regularities of distribution,and the speciality of granitoids in the NS diwa region are also paid attention.更多还原