Figure 1
Tectonic setting of the Santorini-Kolumbo volcanic field.
(a–d): Schematic cartoons of different geodynamic environments where seafloor hydrothermal vents occur. (a) Mid-Ocean Ridges along divergent plates. (b) Intra-Oceanic Arcs within convergent boundaries (e.g. Philippines). (c) Marginal back-arc basins and island arcs along active continental margins with oceanic subduction (e.g. Japan). (d) “Hellenic Subduction System”. The “Hellenic Volcanic Arc”, within active continental margin, developed behind the molassic back-arc basin, hosted over thinned continental crust. (e) Swath bathymetry map of Santorini-Kolumbo volcanic field (modified after ref. 5-permission to publish the original map was provided by Elsevier Science) and location of the geological transect (red line). (f) Schematic cartoon depicting the geological cross section through the Hellenic Volcanic Arc, from the molassic back-arc Cretan Basin to the Cycladic island of Ios in the back-arc area.
