Yellowstone's magma plumbing mainly shaped by tectonic forces—not deep mantle plume

A lot of research goes into determining how to best predict the next eruption of the Yellowstone supervolcano. Part of this involves pinning down how the magma migration system functions and evolves over time. The exact mechanism driving Yellowstone's volcanism and how magma travels from deep within Earth to the surface is still debated, but a new study, published in Science, offers up evidence that Yellowstone's underground magma system is largely driven by tectonics. This is in contrast with some previous theories which posit that a deep mantle plume is the main source of magma.