Scientist wondered how volcanoes could be located so far from the technically boundaries until One proposed the idea of blank, where the magnum is much hotter than the surrounding magnum. These are blank and do not move with technic plates. They are responsible for the creation of blank island chains.
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Scientist wondered how volcanoes could be located so far from the tectonic boundaries until one proposed the idea of hotspots, where the mantle is much hotter than the surrounding mantle. These hotspots are stationary and do not move with tectonic plates. They are responsible for the creation of volcanic island chains.