The map shows the thickness of sediments deposited on the Norwegian continental shelf during the last 2.6 million years. The data forms the basis for further research and investigations and support for development on the seabed.

During many ice ages in the Quaternary, the land areas in Scandinavia and the North Sea and the continental shelf west of Norway were covered by ice. The map shows where most of the sediments have been deposited on the shelf. There are two large depositional areas outside central Norway with sediment thicknesses of up to 1,500 m, while in the Skagerrak and the coastal areas there is only a thin sediment cover or bare rock. This knowledge is important for understanding the geological history of the area. The composition and thickness of the sediments on the seabed set the conditions for both life in the sea and human activities such as fishing, development, nature conservation, seabed installations, etc.

Detaljnivået på datasettet tilsier bruk innenfor kartmålestokken: 1:500.000 - 1:5 000.000.

The thickness is given in milliseconds two-way travel time (ms twt). 1 ms twt corresponds to approx. 1 m at a sound velocity of 2000 m/s in the sediments.

Region

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ISO19115

2003