Yellowstone hotspot is powered by superheated magma rising up from Earth’s core

Deep-Mantle Plume Fuels the Yellowstone Supervolcano

“New images prove that the Yellowstone hotspot is powered by superheated magma rising up from Earth’s core. The last Yellowstone supereruption occurred roughly 640,000 years ago, creating the massive, 40-mile wide Yellowstone caldera and producing an umbrella-shaped ash cloud that blanketed areas as far away as modern-day New York with several millimeters of ash. The prospect of another cataclysmic supereruption has sent scientists on a decades-long search for the source of Yellowstone’s devastating power.” (more)