Geologically speaking, the North Sea is divided into four main basins: Northern, Moray Firth, Central, and Southern. Each has a long and complex geologic history with unique structural and stratigraphic developments driven by tectonic events over the last 400 Million years.[1] The northern North Sea Paleorift system, including the Viking and Sogn graben, is an approximately 150–200 km wide zone of extended upper crust with preserved strata from pre-Triassic to Tertiary. It is bounded by the Shetland Platform to the west and the Norwegian mainland to the east.[3]