摘要
由于花岗岩成因的多样性及花岗岩形成演化过程的长期性和复杂性，长期以来，人们对花岗岩的成因争论不休，对前寒武纪的花岗岩更是如此。本文从岩体地质特征、岩相学、矿物学及岩石化学等方面充分论证并证实了产出于贺兰山群变质杂岩中的阿拉善台隆东南缘浩尧尔呼都格沟花岗岩体为岩浆成因花岗岩，不是贺兰山群的组成部分，应从贺兰山群中剔除。这与前人的认识是全然不同的。
In this paper,the petrography, mineraloge, geochemistry and the geological characteristics of the granite mass of Haoyaoerhudugegou in Helanshan group were studied. A new recognization was given, the mass is magmatic granite and the mass does not relate to Helanshan group.
关键词
花岗岩
成因
贺兰山群
Alashan patform
Helanshan group
Pre-cambrain granite.
