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Figure 1

From: Paroxysmal eruptions tracked by variations of helium isotopes: inferences from Piton de la Fournaise (La Réunion island)

Figure 1

Location map of sampled sites at La Réunion (PdF for Piton de la Fournaise and PdN for Piton des Neiges volcanoes). Crushed crystals from lavas (circles) and cumulates (squares) in the NW rift zone (NWRZ; in red) and in the Enclos Fouqué caldera (EF; in green) and related NE-SE rift zones (NERZ, SERZ; in green). The green arrow represents the chronology of the products from the August 2015 eruption described in this study. Volcanic gases sampled in Cilaos thermal springs at PdN (in blue). Analytical protocols are reported in the Methods.

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