富氟花岗质熔体形成和演化的实验研究  

Experimental study on formation and evolution of F-rich granitic melt.

作　　者：李福春[1] 朱金初[2] 张林松[2] 饶冰[2] 张佩华[2] 

机构地区：[1]南京农业大学资源与环境科学学院,南京210095 [2]南京大学地球科学系成矿作用国家重点实验室,南京210093

出　　处：《岩石学报》2003年第1期125-130,共6页Acta Petrologica Sinica

基　　金：国家自然科学基金(49873017);高校博士点基金(199902842)

摘　　要：通过高温高压实验,模拟了富氟花岗质熔体形成和演化的过程。结果表明,随着结晶分异作用的进行,熔体中SiO_2含量降低而Al_2O_3和F含量升高,相应地,A/NKC和NKA/Si比值逐渐升高,并最终形成了贫硅过铝富氟的熔体。Through high T-P experiments, the process of generation and evolution of F-rich granitic melt had been studied. The results demonstrate that along with crystallization of granitic magma, SiO2 in the residual melt decrease, while Al2O3 and F increase which results in both A/NKC and NKA/Si rations to be increased, and finally poor-Si peraluminous F-rich granite melt to be formed. This is in good agreement with vertical petrochemical zonation observed in natural Li-F-rich granites.

关 键 词：花岗质熔体 形成 溶化 高温高压实验 氟 结晶分异作用 

分 类 号：P588.121[天文地球—岩石学]