This table is based on published information on direct observations from deep-diving vehicles, underwater photographs of canyon floors, photographs andx-radiographs of box cores, current-meter data, seismic profiles, and study of conventional core and outcrop data. Note that two of the published cores (LaJolla) and outcrops (Annot) have been reinterpreted in this study.a Mass flows include slides, slumps, grain flows, and debris flows, but not turbidity currents (Dott, 1963).