EVOLUTION OF THE LESSER ANTILLES ISLAND ARC

by Laura Holman

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MAIN CONCEPTS
Surficial structure of the subducting oceanic crust controls all aspects of arc volcanism.
Subduction of large buoyant ridges often leads to regional collision events.
Subduction of non-buoyant ridges creates local interactions with the overriding plate that effect the seismic regime, vertical and transverse tectonics, hydrothermalism and volcanism.
Volcanism in the Lesser Antilles varies in composition and periodicity.