This site is situated in a water depth of 5150 m.
Seismic data suggest that the basement ridge is a possible fault block tilted toward the continent.
The site lies in a location where a variety of structural and geophysical models for the development of the OCT can be tested. The principal conclusion at this site is that the balance of evidence indicates that the north-south elongated fault block on which it was drilled is composed of continental crust. Biostratigraphic data from Site 1069 indicate that this site was at shelf depths in the earliest Cretaceous and then subsided and had reached abyssal depths by the late Campanian. The chalk in turn is separated from an underlying Tithonian black silt by an erosional unconformity. The limestone clasts consist of grainstones and algal boundstones.