At the Last Glacial Maximum (LGM), a 400 km-long ice stream drained an interior drainage basin of the Scandinavian Ice Sheet of about 150,000 km2 through Vestfjorden and the adjacent cross-shelf trough of Traenadjupet further downstream (Fig. 1) (Ottesen et al. 2005a). Evidence for past ice-stream activity comes from a variety of submarine sedimentary landforms that are streamlined in the direction of past ice flow (Ottesen et al. 2005b). Superimposed on these streamlined landforms are several wedge-like sedimentary features orientated transverse-to-flow. These submarine landforms suggest that deglacial retreat was punctuated by still-stands that produced substantial depocentres known as grounding-zone wedges (GZW) (e.g. Anderson 1999; Dowdeswell et al. 2008; Dowdeswell & Fugelli 2012; Batchelor & Dowdeswell 2015).