GEOLOGY

Detailed explanation-1: -Destructive, or convergent, plate boundaries are where the tectonic plates are moving towards each other. Volcanoes form here in two settings where either oceanic plate descends below another oceanic plate or an oceanic plate descends below a continental plate.

Detailed explanation-2: -Volcanoes are one kind of feature that forms along convergent plate boundaries, where two tectonic plates collide and one moves beneath the other.

Detailed explanation-3: -Rift volcanoes. Rift volcanoes form when magma rises into the gap between diverging plates. They thus occur at or near actual plate boundaries.

Detailed explanation-4: -Plate Tectonics Most volcanoes form at the boundaries of Earth’s tectonic plates. These plates are huge slabs of the Earth’s crust and upper mantle, which fit together like pieces of a puzzle. These plates are not fixed, but are constantly moving at a very slow rate.

Detailed explanation-5: -These so-called “hotspot” volcanoes are created when a narrow stream of hot mantle rises up from deep inside the earth and melts a hole in the plate so that the magma can ooze upward. The Hawaiian islands, for example, are a result of hotspot volcano formations near the center of the giant Pacific plate.