Equilibrium *** melting relations in the Higher Himalayan Crystalline(HHC) pelitic migmatites,Sikkim Himalaya

作     者：Bhaskar Kundu 

作者机构：National Geophysical Research InstituteCouncil of Scientific and Industrial ResearchUppal RoadHyderabad 500007India 

出 版 物：《Geoscience Frontiers》 (地学前缘（英文版）)

年 卷 期：2011年第2卷第4期

页      面：539-549页

学科分类：0709[理学-地质学] 070901[理学-矿物学、岩石学、矿床学] 07[理学] 

基　　金：Council of Scientific and Industrial Research  India  CSIR 

主　　题：Pelitic migmatites Crustal anatexis Mafic selvedge Disequilibrium melting 

摘      要：Higher Himalayan Crystalline（HHC） complex of the Sikkim Himalaya predominantly consists of high-grade pelitic *** this study,reaction textures,mineral/bulk rare earth elements （REE）,trace element partition coefficients and trace element zoning profiles in garnet are used to demonstrate a complex petrogenetic process during crustal *** the help of equilibrium REE and trace element partitioning model,it is shown that strong enrichment of Effective Bulk Composition（EBC） is responsible for the zoning in garnet in these *** data strongly support disequilibrium element partitioning and suggest that the anatectic melts associated with mafic selvedges are likely produced by disequilibrium melting because of fast melt segregation process.