Norwegian trench

It reaches from the Stad peninsula in Sogn og Fjordane in the northwest to the Oslofjord in the southeast.

It was formed during the last 1.1 million years by the effects of erosion associated with repeated ice stream activity.

The Norwegian Trench was created by fluvial erosion processes during the later Tertiary age.

[2] During the main glaciations, the Skagerrak Trough was the meeting point for ice from southeastern Norway, southern Sweden and parts of the Baltic causing a relatively fast-moving ice stream that passed south of the Norwegian coast and then turned north, eventually reaching deepwater at about 62°N.

Glacial erratics such as flint and rhomb porphyry, thought to originate from the Skagerrak and Oslo areas respectively,[3] and deformed glacial tills found on the coast of Jæren provide the main onshore evidence for the Norwegian Channel Ice Stream.