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Subduction zone magmatism

Subduction zone magmatism. Activity along arcuate volcanic island chains along subduction zones Distinctly different from the mainly basaltic provinces thus far Composition more diverse and silicic Basalt generally occurs in subordinate quantities

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Ocean Island arcs

Ocean Island arcs. Ocean-ocean collision zones. Volcanic Rocks of Island Arcs. Complex tectonic situation and broad spectrum High proportion of basaltic andesite and andesite Most andesites occur in subduction zone settings.

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1.64k views • 36 slides

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Subduction zone magmatism

Ocean Island arcs