Definitions for "Mantle plume"
A column of hot, partially molten material that rises from an intermediate depth in the mantle.
Rising jet of hot, partially molten material, thought to emanate from the deep mantle and responsible for intraplate volcanism.
A body of molten material (magma) that originates in the Earth's lower mantle, migrates upward through the mantle and crust, and emerges on the surface as a geographically stable centre of basaltic volcanic activity (a ‚hot spot') that can persist for millions of years (e.g. the hot spot beneath the Hawaiian Island chain).
Keywords:  supercontinent
a manifestation of a type of geological phenomenon originally proposed by W