Figure 2: Locations of volcano-related structures and seismic stations in the Toba region.
From: The feeder system of the Toba supervolcano from the slab to the shallow reservoir
Volcanic cones (crosses) were identified from the topographic map and from geological information2. Contours of three major calderas2 are indicated by the Young, Middle and Old Toba Tuffs (YTT, MTT and OTT, respectively). Other caldera-related structures are highlighted with brown contours. Dots depict slab-related seismicity (red: 50–140 km depth; yellow: 140–170 km depth). The grey area highlights the area of deep seismicity presumably associated with the IFZ.
