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Are plate tectonics necessary for volcanoes?

Are plate tectonics necessary for volcanoes?

“Plate tectonics helps keep volcanism active for a long time,” says Brad Foley, a geophysicist at Penn State University, US. “If we didn’t have volcanism sending back carbon dioxide into the atmosphere, then the planet could get very cold. It would freeze over.” Maintaining a warm climate is key for a habitable planet.

How are volcanoes formed on a plate tectonic plate?

How do plate tectonics form volcanoes? Volcanoes form when tectonic plates collide and one plate is pushed beneath another. Tectonic plates also move away from one another to produce volcanoes. Hot magma rises from the mantle at mid-ocean ridges pushing the plates apart. This molten rock then rises and erupts on the surface building up a volcano.

A third tectonic setting where volcanism occurs is believed to be the result of mantle plumes and not directly related to plate boundaries. So called hot spot volcanoes fall into this category. As an oceanic plates collides with another plate, it is subducted and generates volcanism on the overlying plate.

How did the theory of plate tectonics change the world?

Vocabulary Plate tectonics is a scientific theory that explains how major landforms are created as a result of Earth’s subterranean movements. The theory, which solidified in the 1960s, transformed the earth sciences by explaining many phenomena, including mountain building events, volcanoes, and earthquakes.

Which is an example of an intra-plate volcano?

Plate-Tectonics Theory. However, some active volcanoes are not associated with plate boundaries, and many of these so-called “intra-plate” volcanoes form roughly linear chains in the interior of some oceanic plates. The Hawaiian Islands provide perhaps the best example of an “intra-plate” volcanic chain, developed by the northwest-moving Pacific…