Figure 11

3D diagram highlighting the observation that the areas where craters are interpreted in the SMA area are also underlain by magmatic sills. (a) Structural map of horizon, H1 displayed with a 30% transparency. The spatial extent of the craters is marked by the white dashed polygons (b) Above the sills, different types of hydrothermal vent complexes (HVCs) are interpreted. These include eye-, dome- and crater-shaped HVCs.