Fig. 4

Uninterpreted (a and c) and interpreted (b and d) high-resolution 3.5 kHz reflection seismic profiles. Profile a/b is a SW-NE profile crossing the discussed mass-movement deposit. Profile c/d is a NW–SE profile imaging the seismic facies at the coring position (marked with a star on the profile and Fig. 1), the black rectangle indicates the penetration depth of the sediment core. The vertical black line shows the intersection with the profile in Fig. 5d. Profile locations are shown in Fig. 1a