A mantle plume is a buoyant, localized upwelling of anomalously hot, partially molten or near-solid-state mantle material that rises from depth toward the lithosphere, driven primarily by thermal and compositional density contrasts. In geodynamic models, mantle plumes are often represented as narrow, cylindrical conduits with bulbous heads, capable of producing large magma volumes upon decompression melting in the upper mantle. They are invoked to explain intraplate magmatism, flood basalt provinces, and hotspot volcanism, and are studied through seismic tomography, geochemical tracers (e.g., isotopic signatures), and numerical or analogue convection experiments that constrain their temperature excess, geometry, and temporal evolution.
Science never stops. Get notified about trending stories.
