Acoustical reflection profiles, sediments and late Quaternary history of the Norwegian channel north of Bergen
Abstract
Acoustical reflection profiles of the area show four sedimentary units which reflect depositional events in and since the last glaciation. Two units (4 and 3) have a morainic character. The morainic units are covered by late Weichselian glacio-marine (unit 2) and Holocene (unit 1) sediments. The distribution of the postglacial basin infill has been mapped and shows that at present sedimentation rates are low. Storm induced wave abrasion of Vikingbank has resulted in selective removal of fines from west to east. The recent hydrographic regime is expressed in the distribution of the sand fractions, in the carbonate- and organic carbon content, and in the C/N ratios of the bottom sediments. Pockmarks are present along the western slope of the Channel which becomes highly dissected and irregular towards the south.Authors contributing to Netherlands Journal of Geosciences retain copyright of their work, with first publication rights granted to the Netherlands
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