摘要
本文论证了在华南约有97％(面积)的前寒武纪花岗岩是S型花岗岩。它们是华南元古宙碰撞造山带中中酸性岩浆岩的主要岩石类型;但它们的源岩物质和形成方式有三种情况,分别与形成时特定的构造环境相联系。此外,本文还讨论了该造山带的岩石组合在空间上的差异和造山带沿走向被分段的可能性。
It is demonstrated that about 97% (area) Precambrian granitoids in South China belong to S-type granitoids. These granitoids make up of a majority of the intermediate to acid magmatic rocks distributed in the Proterozoic collision orogenic belt in South China. However, based on the study of source rocks and formation processes, these granitoids can be subdivided into three circumstances related to spectific tectonic environments respectively. Furthermore, the differences of petrological assemblage in spaces and the possibility of division of the belt along its trend are also discussed in this paper.
出处
《南京大学学报（自然科学版）》
CAS
CSCD
1992年第3期423-430,共8页
Journal of Nanjing University（Natural Science）
关键词
S型花岗岩
碰撞山带
前寒武纪
S-type granitoids
collision orogenic belt
South China
