Pan-African high-grade metamorphism of southern Sinai, Egypt, fluid inclusion evidence

作     者：Mohamed El Tokhi Abdalla Musallum 

作者机构：Geology Department College of Science United Arab Emirates UniversityUnited Arab Emirates 

出 版 物：《Chinese Journal Of Geochemistry》 (中国地球化学学报)

年 卷 期：2009年第28卷第4期

页      面：358-363页

核心收录：

学科分类：070902[理学-地球化学] 0709[理学-地质学] 07[理学] 

基　　金：The authors wish to express their sincere thanks to Dr.J.Walter for his help while carrying out the present study at the Institute of Mineralogy Karlsruhe University Germany 

主　　题：流体包裹体 西奈半岛 变质作用 埃及 证据 二氧化碳 局部熔融 熔体包裹体 

摘      要：Fluid inclusions in the leucosomes of Wadi Feiran migmatites showed that CO2, H2O and (H2O-CO2) fluids were likely to have been present when partial melting began in these rocks. Low salinity, aqueous fluid, to a lesser extent, CO2-rich fluids are the most abundant fluids. The present study suggests that high-density CO2 inclusions were formed at the earliest stage, while H2O inclusions were formed at the late stage. In an intermediate stage, low-density CO2 and H2O, CO2 inclusions were formed. At the early stage of uplift and during melt crystallization, the CO2-bearing vapour was trapped at grain boundaries. At the late stage of uplift, H2O released at the time of crystallization of the melt was trapped as inclusions.