parent rock

Three kinds of primary magma which is olivine tholiitic basalt, leucobasanite and basanite are recognized.

根据３０多个玄武岩体的详细的实际资料，将研究区内中新生代玄武岩划分为５种类型，分属２个岩浆系列，判别出３种原生岩浆。