SURFACE-DERIVED MATERIALS IN TTG AND KOMATIITE? HINT FROM MASS-INDEPENDENT FRACTIONATION OF SULFUR ISOTOPES
Seminars
Semester 2
Mass-independent fractionation (MIF) of sulfur is a unique signal that can only be produced via atmospheric processes in Archean-Hadean earth. This distinctive feature makes it an excellent tracer of surface-derived materials and holds important implications in understanding the geodynamic processes involved in the formation of Archean cratons. In this study, we will focus on investigating the presence of MIF signals in the source of TTG and Komatiite within North China Craton (NCC). Some of the questions that we will try to answer are (1) What is the origin of water required to form TTG? (2) Does the oxygen isotope anomaly in komatiite comes from the mantle heterogeneity or surface material?
Additional information: Mr. SHANG kun, kshang@connect.hku.hk