Hot rock from underneath can invade into the cooler plate above as the denser tectonic plate subducts, or sinks below, the less dense tectonic plate. This mechanism generates magma by transferring heat. The magma in this subduction zone has the potential to form a chain of active volcanoes known as a volcanic arc over millions of years.
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Hot rock from underneath can invade into the cooler plate above as the denser tectonic plate subducts, or sinks below, the less dense tectonic plate. This mechanism generates magma by transferring heat. The magma in this subduction zone has the potential to form a chain of active volcanoes known as a volcanic arc over millions of years.
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