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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.
The Mesozoic structures underneath the North Sea can be seen as a failed rift system. [2] After initial crustal extension and the formation of rift basins during the Triassic and Jurassic periods, [1]: [70] the extension concentrated on the other side of the British Isles, which would create the northern Atlantic Ocean.
The North Sea receives freshwater from a number of European continental watersheds, as well as the British Isles. A large part of the European drainage basin empties into the North Sea, including water from the Baltic Sea. The largest and most important rivers flowing into the North Sea are the Elbe and the Rhine – Meuse. [5]
Main European drainage divides (red lines) separating catchments (green regions). The main European watershed is the drainage divide ("watershed") which separates the basins of the rivers that empty into the Atlantic Ocean, the North Sea and the Baltic Sea from those that feed the Mediterranean Sea, the Adriatic Sea and the Black Sea.
The North Sea basin is located in northern Europe and lies between the United Kingdom, and Norway just north of The Netherlands and can be divided into many sub-basins. The Southern North Sea basin is the largest gas producing basin in the UK continental shelf, with production coming from the lower Permian sandstones which are sealed by the ...
Sea level is affected not only by the volume of the ocean basin, but also by the volume of water in them. Factors that influence the volume of the ocean basins are: Plate tectonics and the volume of mid-ocean ridges: the depth of the seafloor increases with distance to a ridge, as the oceanic lithosphere cools and thickens.
The geography of the North Sea studies coastal and submarine features as well as the people who live on its coasts. It is bounded by the east coasts of England and Scotland to the west and the northern and central European mainland to the east and south, including Norway, Denmark, Germany, the Netherlands, Belgium, and France. [1]
Map of oil and gas fields. This list of oil and gas fields of the North Sea contains links to oil and natural gas reservoirs beneath the North Sea.In terms of the oil industry, "North Sea oil" often refers to a larger geographical set, including areas such as the Norwegian Sea and the UK "Atlantic Margin" (west of Shetland) which are not, strictly speaking, part of the North Sea.