Application of Electron Microprobe Analysis of Detrital Garnet to Provenance Studies

Key words: 
• garnet /
• electron /
• microprobe

Abstract: Heavy-mineral suites have frequently been used in studies of parent rocks, but it is usually hampered by the depletion of intrastratal solution and other factors. While in the provenance analysis, the study of garnet compositions by microprobe analysis is superior and has its own originality, which reduces the effects of hydroynamism and diagenesis to a minimum. In this paper, We analyzed the composition of detrital garnets from Bobal Basin. The results indicate that the garnet of Bobal Basin is mainly of low grossular content and different source areas have different garnet associations, which also proves that provenance analysis of the early stage IS correct.