Fig. 8

In the vertical sections (a–f), circles manifest hypocenters of earthquakes; White polygons show the border of a RDE value of 0.1. Sahand shows the surface location of the Sahand volcano and the arrow with the NTF illustrates the surface expression of the North Tabriz Fault; light gray area masks cells which are hit by rays. We masked the 3 km top layer in all cross sections because our data could not solve this part of the area where the sections go across. The inset map (g) shows the surface (0.0 km depth) output map section with the position of vertical slices through areas of interest. The star shows the Sahand volcano. Labels 1a and 2 mark the well-resolved high- and low-velocity anomalies, respectively, while label 1b outlined by blue dashed lines denotes the fairly well resolved high-velocity anomaly. The areas marked in grey in cross sections d and f show surficial Pliocene-Quaternary sedimentary rocks, north of NTF