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(Left) Location of Saint Lucia in the Lesser Antilles with positions of active volcanoes within the arc; shades of blue relate to bathymetry (darker indicates deeper). (Right) Geological sketch map of the SVC with main eruptive phases and (U-Th/He) eruption ages (21). Stars represent sampling locations of pyroclastic flow deposits that are related to the SVC eruption phases (see color coding) and whose eruption was dated by (U-Th)/He zircon methods (21).
