Figure 2.11. Cross section through the Earth showing the Yellowstone mantle plume Depth cross section through the Earth, from the surface to the core-mantle boundary. The location of the section is shown by the purple line on the map. Warm colors indicate slower seismic velocities, which are areas of higher temperature. A plume of hot material originates at the core-mantle boundary and extends upward to the Yellowstone hotspot (marked by the volcano symbol at the surface). This is a USGS Image.    Return to Previous View