Part 6/7:
One possibility is that these remnants represent ancient materials rich in silica that have existed since the formation of the mantle billions of years ago. Another theory suggests these might be regions where iron-rich rocks have accumulated over time due to mantle movements.
According to geologists, the findings underscore the importance of refining existing models used in studying the Earth's interior. In essence, the research not only broadens our understanding of tectonic dynamics but also illuminates the fact that significant mysteries remain about the subterranean world beneath our feet.