Deep beneath island arcs, new research suggests that gold enrichment originates from repeated, high-degree melting of a hydrous mantle rather than a single process. Far below the ocean floor, Earth’s “gold kitchen” is at work. Volcanic island arcs form above subduction zones, where one oceanic plate sinks beneath another, and these regions are often unusually [...]from SciTechDaily https://ift.tt/WnVMZpj
