Mg Index of Olivine in Kimberlite of Hebi, Henan Province Significance of Mg Index of Olivine in Kimberlite of Hebi, Henan Province

The North China plate is one of the few in Eurasia due to the destruction of craton with Archean continental crust. The lithospheric mantle in the eastern part of Taihang (Hebi, Henan) is replaced by oceanic mantle, while the thick ancient cratonic mantle is still preserved in the western part of Taihang. The structural belt on the east side of Taihang is a transitional zone from the damaged area in the east of North China Craton to the relatively complete area in the West. It is of great significance to study the characteristics of deep mantle in the east side of Taihang (Hebi, Henan) structural belt for the study of the North China Craton failure.