1.)In geology, hotspots are volcanic locales thought to be fed by underlying mantle that is anomalously hot compared with the surrounding mantle. Examples include the Hawaii, Iceland and Yellowstone hotspots.
2.)A hot spot is an intensely hot area in the mantle below Earth's crust. ... This heat causes the mantle in that region to melt. The molten magma rises up and breaks through the crust to form a volcano. While the hot spot stays in one place, rooted to its deep source of heat, the tectonic plate is slowly moving above it.
3.)Above the plumes, you get hot spots, where rock melts into magma. ... It allowed them to track the movement of tectonic plates, because as the plates moved over a stationary hot spot, they left a trail, or chain, of old volcanoes behind them.
