Abstract

In the Møre basin offshore mid-Norway, the basis of the Cretaceous sequence reaches depths of more than 5000 m. The basin is limited on its eastern margin by a system of extensional faults which probably were initiated in the Triassic and which were active periodically throughout the Aptian. The internal basin floor is divided into subbasins by structural highs which are rotated fault blocks, presumably rooted in the basement. The main structuring of the basin started in Late Triassic and was followed by accelerating subsidence in the Early Cretaceous. Subsidence was interrupted by a mild phase of inversion in the latest Cretaceous, and a more pronounced inversional phase in the Eocene-Miocene. The latter developed folds with wavelengths in the order of kilometers, and local low-angle reverse faults and the inversion of depocenters.

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