摘要
本文从主要元素秈微量元素地球化学特征入手,深入讨论峨眉山玄武岩的岩浆成因和演化。指出富LREE、富LILE为本区玄武岩的共同特征。论证了地幔富集作用在岩浆成因中占主导地位,提出不同类型的玄武岩(双模式玄武岩)源于不同深度的同一成分富集地幔。建立了部分熔融和分离结晶模式。
Proceeding from geochemical characteristics of the major and trace elements this paper puts many efforts to discuss the origin and evolution of the magma Emei basalt. It is pointed out that the enrichment of LREE and LILE are common feature of the basalt in this area. The different types of basalts (dual-model basalt) came from the mantle rich in same composition at different depths. The model of partial melting and fractional crystallication is also presented in this paper.
出处
《矿物岩石》
CAS
CSCD
1989年第4期100-105,共6页
Mineralogy and Petrology
