--> Abstract: Continental Lithospheric Buckling in Southern North Sea, by P. Unternehr and J. Van Den Driessche; #90942 (1997).
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Abstract: Continental lithospheric buckling in southern Previous HitNorthNext Hit Previous HitSeaNext Hit

UNTERNEHR, PATRICK*, and JEAN VAN DEN DRIESSCHE

Graben inversion in Northern Europe has been demonstrated since three decades. In Previous HitNorthNext Hit Previous HitSeaNext Hit, most of tectonic interpretations consider that Upper Cretaceous to Early Tertiary compression is essentially responsible for graben inversion.

However, seismic investigations and well data in southern Previous HitNorthNext Hit Previous HitSeaNext Hit show that sedimentation pattern, during the Upper Cretaceous, was influenced by large-scale folding. Fold wavelength in order of 100 km and 200 km can be demonstrated south and Previous HitnorthNext Hit of the Mid Previous HitNorthNext Hit Previous HitSeaNext Hit high, respectively. Fold amplitude varies from 2 km to 4 km.

This strongly suggests (1) that compressive tectonics were not restricted to basin inversion but involved crustal and/or lithospheric buckling and (2) that crustal rheology differs apart from the Mid Previous HitNorthNext Hit Previous HitSeaNext Hit High.

Kinematics reconstruction and attitude of fold axes argue for a close connection between Previous HitNorthNext Hit Atlantic opening and compression in southern Previous HitNorthNext Hit Previous HitSeaTop during the Upper Cretaceous.

AAPG Search and Discovery Article #90942©1997 AAPG International Conference and Exhibition, Vienna, Austria