Geochemistry and mineral chemistry of Pan-African amphibolites of South Sinai,Egypt  

作　　者：Mohamed El-Tokhi Bahaa Eldin Amin Sulaiman Alabeed Abdulla Musallam 

机构地区：[1]Geology Department,College of Science,United Arab Emirates University

出　　处：《Chinese Journal Of Geochemistry》2010年第3期246-254,共9页中国地球化学学报

摘　　要：In the Wadi Feiran area, amphibolites occur as inclusions, bands, linear bodies of variable thickness and irregular lenses in para-geneisses. Chemical evidence indicates that these amphibolites display an igneous origin and were derived from magma essentially of tholelitic rather than alkaline composition; transitional in character between continental and island-arc. The chemistry of amphiboles, related to pressure and temperature conditions of metamorphism, showed that they were formed under low pressure and high temperature conditions.In the Wadi Feiran area, amphibolites occur as inclusions, bands, linear bodies of variable thickness and irregular lenses in para-geneisses. Chemical evidence indicates that these amphibolites display an igneous origin and were derived from magma essentially of tholelitic rather than alkaline composition; transitional in character between continental and island-arc. The chemistry of amphiboles, related to pressure and temperature conditions of metamorphism, showed that they were formed under low pressure and high temperature conditions.

关 键 词：地球化学特征 西奈半岛 矿物 埃及 碱性岩浆 温度条件 高温条件 夹杂物 

分 类 号：P588.125[天文地球—岩石学]