In the central part of the North Sea, a Viking Graben border fault was reactivated in the Paleocene-Eocene. Rejuvenation has resulted in such structural features as "flower" structures and normal faults along the old Viking Graben border fault. Tensional features along one border fault trend, and compressive features along another. The transient movements coincide with the incipient sea-floor spreading in the Norwegian-Greenland Sea area.--Modified journal abstract.

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