Andesitic magma is a type of intermediate volcanic rock that is primarily composed of silica (SiO2) and contains between 52% to 66% of silica by weight. It is associated with subduction zone volcanism, where oceanic plates descend into the mantle beneath continental plates, leading to the generation of this specific type of magma. The unique composition of andesitic magma influences its viscosity and the explosive nature of the eruptions it produces.
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