View (from the east) of the along-axis seismic profiles in the bathymetric framework of the ICH area. From top panel to bottom panel: profile 04 covers the onset of the corrugated footwall (yellowish area); profile 09 (from Planert et al. 2009) covers the central portions of the OCC; profile 02 covers the rifted flank of the OCC; profile 05 covers the current median valley. Black (dashed) lines represent Moho, shaded areas are 90 per cent confidence intervals for Moho-depths within the applied uncertainty analysis. Red lines indicate seafloor projections of seismic profiles. Yellow circles denote seismic instrument locations. Coloured squares indicate dredge locations from Reston et al. (2002). Black-dashed vertical lines denote profile intersection with line 07/08. The perspective has been chosen such that velocity profiles are reproduced without distortion; the vertical exaggeration is ∼2. See text for discussion.