“…Some studies have revealed the ubiquitous existence of small-scale valleys, called channels or gullies, that act as tributaries to large-scale features such as canyons or turbidite fan channels, and seem to be genetically linked to them Blum and Okamura, 1992;Field et al, 1999;Orange, 1999). The origin of gullies and small slope channels has usually been related to sea level oscillations, as in the shelf-edge gullies in the Tyrrhenian margin (Chiocci and Normark, 1992) and the gullies on the northern California continental slope (Field et al, 1999;Spinelli and Field, 2001;Burger et al, 2003). In contrast, gullies in the Bowser Basin (Ricketts and Evenchick, 1999) and shelf-margin deltas (Porebski and Steel, 2003) are attributed to instability processes.…”