X-ray picture from the core KS16 (3357 m water depth in the abyssal plain – 200 km from the shelf break) and detail of
the hyperpycnite sequence (mean grain size, scanned thin slab, and
interpretative log). The inversely graded Fd basal layer (Ha) consists
laminae, and begins with a gradual transition. The normally graded
(Hb) begins with an erosional contact, and consists of silt layers with
cross laminations, multiple internal erosional surfaces, and then
laminae. The whole sequence is overlain by hemipelagic deposits
clay, which is lighter on X-ray picture).