What's Happening?
Researchers from Adelaide University have discovered that ancient tectonic processes are crucial for locating rare earth elements (REEs) essential for modern technologies. The study, published in Science Advances, links ancient subduction zones to the
formation of REE deposits and carbonatites, which are vital for technologies like electric vehicles and wind turbines. Led by Professor Carl Spandler, the team used advanced plate tectonic modeling to reconstruct Earth's geological history over the past two billion years. They found that regions of the Earth's mantle fertilized by subduction processes now underlie a significant percentage of REE deposits. This research challenges previous theories that linked these deposits primarily to mantle plumes and highlights a two-stage process involving initial mantle fertilization followed by a separate event triggering magma formation.
Why It's Important?
The findings have significant implications for mineral exploration, offering a more targeted approach to discovering new deposits. As demand for REEs continues to grow, this research provides a strategic advantage for exploration companies and governments seeking to secure these critical resources. The study also enhances our understanding of Earth's geological evolution and the long-term storage of carbon and water in the mantle, which has implications for climate and volcanic activity. By identifying ancient tectonic zones, the research narrows down search areas for future discoveries, potentially reducing exploration costs and increasing efficiency.
