The Mesozoic–Cenozoic structural framework of the Bay of Kiel area, western Baltic Sea |
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| Authors: | Martin Bak Hansen Holger Lykke-Andersen Ali Dehghani Dirk Gajewski Christian Hübscher Morten Olesen Klaus Reicherter |
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| Institution: | (1) Institute of Geophysics, University of Hamburg, Bundesstrasse 55, 20146 Hamburg, Germany;(2) Department of Earth Sciences, University of Aarhus, Finlandsgade 6-8, 8200 Aarhus N., Denmark;(3) Institute of Geology and Palaeontology, Hannover University, Callinstrasse 30, 30167 Hannover, Germany |
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| Abstract: | A dense grid of multichannel high-resolution seismic sections from the Bay of Kiel in the western Baltic Sea has been interpreted
in order to reveal the Mesozoic and Cenozoic geological evolution of the northern part of the North German Basin. The overall
geological evolution of the study area can be separated into four distinct periods. During the Triassic and the Early Jurassic,
E–W extension and the deposition of clastic sediments initiated the movement of the underlying Zechstein evaporites. The deposition
ceased during the Middle Jurassic, when the entire area was uplifted as a result of the Mid North Sea Doming. The uplift resulted
in a pronounced erosion of Upper Triassic and Lower Jurassic strata. This event is marked by a clear angular unconformity
on all the seismic sections. The region remained an area of non-deposition until the end of the Early Cretaceous, when the
sedimentation resumed in the area. Throughout the Late Cretaceous the sedimentation took place under tectonic quiescence.
Reactivated salt movement is observed at the Cretaceous Cenozoic transition as a result of the change from an extensional
to compressional regional stress field. The vertical salt movement influenced the Cenozoic sedimentation and resulted in thin-skinned
faulting. |
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| Keywords: | Seismic interpretation North German Basin Basin evolution Mesozoic Cenozoic |
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