Norway was located at high southerly latitudes in Cambrian/Early Ordovician time. She rotated counter-clockwise during the Ordovician whilst moving northward, and by the Silurian, she had entered tropical latitudes as witnessed by Bahamian types reefs in Sweden. As part of Laurussia and later Pangea, Norway was drifting northwards and Oslo is today located at 60N.
Since the Late Palaeozoic, and directly linked to the break-up of Pangea, the Norwegian continental shelf
experienced multi-phase rifting, culminating in the separation of Greenland and Norway and the opening of the
Northeast Atlantic Ocean at ~54 Ma.
In relatively earthquake-free areas we are commonly
lulled into believing that Norway is static and only
weather and the oceans are dynamic. Yet Norway, through the ages, has been far from passive. Her margins, her mountains and
her very blood, petroleum, were formed in the cauldron
of Plate Tectonics.