What evidence supports the existence of mantle plumes?

Feb 6, 2025 ... It is a spreading plate margin volcano as well as a hotspot volcano. Volcanic hazards. Volcanic hazards include explosions, lava flows, bombs or ... hotspot ... hotspot, region of Earth's upper mantle that upwells to melt through the crust to form a volcanic feature. Most volcanoes that cannot be ascribed ... Jul 31, 2019 ... New data analyses from Rochester researchers show that the volcanic hot spots that helped form the Hawaiian islands are not fixed, but are in constant motion. Axial Seamount is the most active submarine volcano in the NE Pacific. It is a basaltic hotspot volcano superimposed on the Juan de Fuca Ridge spreading ... 2. How does magma get to the Earth's crust to create a hotspot volcano? · Magma travels to Earth's surface through an upward tunnel from deep within Earth. May 6, 2022 ... Most hotspot volcanoes are basaltic (e.g., Hawaii, Tahiti). As a result, they are less explosive than subduction zone volcanoes, in which water ... Shield volcanoes are built almost entirely of low viscosity (very thin, liquidity) fluid lava flows. Flow after flow pours out in all directions from a central ... Apr 1, 2016 ... Here we present new age and geochemical data from volcanic samples from Richardson Seamount, Agulhas Ridge along the Agulhas-Falkland Fracture ... Feb 11, 2020 ... A hotspot is a large plume of hot mantle material rising from deep within the Earth. A line of volcanoes develops as a plate moves over a hotspot. Mantle plumes and volcanic hotspots, distribution of hotspots, distribution of hotspots (Credits: K. Cantner, Earth Magazine), hotspot volcano chain Reunion.