Goal: To understand melt generation, melt transport and their effects on the crust in continental-type arc volcanism. Technique



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Andes Volcano Undershooting Experiment
Introduction
Goal: To understand melt generation, melt transport and their effects on the crust in continental-type arc volcanism.
Technique: Bottom-to-top (slab-to-surface) seismic images of P and S velocity, and P and S attenuation, using both direct and converted/reflected waves from regional earthquakes,

supplemented by measurements of shear wave splitting, geodynamical modeling and geochemical analyses.


Arc volcanism is a poorly understood process. Many different aspects of the process by which arc volcanism occurs - and modifies the continental lithosphere - are controversial (figure 1):




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