Arc volcanism refers to the volcanic activity that occurs along convergent plate boundaries, where an oceanic plate subducts beneath a continental plate or another oceanic plate. This process leads to the formation of a volcanic arc, which is a chain of volcanoes that are typically characterized by explosive eruptions and a high level of silica in the magma. The relationship between subduction zones and arc volcanism is crucial in understanding the geology and eruption styles of these regions.
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