BackgroundVentotene is a trachybasaltic to phonolitic stratovolcano with associated lava flows, domes, and pyroclastics (IAVCEI, 1973; Peccerillo, 2005). The mafic lava flows are cut by a caldera rim and overlain by pyroclastics. The nearby Santo Stefano island is an associated lava dome, also covered by pyroclastics. The pyroclastics are the products of both magmatic and hydrovolcanic processes, and contain lava lithic fragments and xenoliths (Peccerillio, 2005). Scandone (pers. comm.) gives 0.3 Ma as the youngest age for the Ventotene volcanics, but Peccerillo (2005) gives an age range of 0.8 to less than 0.13 Ma.
Smithsonian / GVP volcano information
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