(Table 2) Sedimentation and accumulation rates of DSDP Holes 38-337 and 38-338

• Main Authors: Thiede, Jörn, Diesen, Geir W, Knudsen, Björn-Egil, Snåre, Torbjörn
• Format: Dataset
• Language: English
• Published: PANGAEA 1986
• Subjects: 38-337; 38-338; Accumulation rate; mass; AGE; Calculated; Deep Sea Drilling Project; DRILL; Drilling/drill rig; DSDP; Event label; Glomar Challenger; Leg38; North Atlantic/Norwegian Sea/BASIN; North Atlantic/Norwegian Sea/PLATEAU; Sedimentation rate; Barents Sea; Greenland; Norwegian Sea; East Greenland; east greenland current; Greenland Sea; Iceland; North Atlantic
• Online Access: https://doi.pangaea.de/10.1594/PANGAEA.761096; https://doi.org/10.1594/PANGAEA.761096

The modern depositional environment of the deep Norwegian-Greenland Sea is highly asymmetric in an E–W direction because of the hydrography of the surface water masses and because of the more or less permanent pack ice cover of the East Greenland Current regime along the Greenland continental margin. By means of sedimentation rates we have tried to investigate whether this hydrographic asymmetry influenced the sediment input to the Norwegian-Greenland Sea over the past 60 m.y. Sediment input can be quantified if thicknesses of sediment sections accumulated over known time intervals can be measured and if some of their physical properties have been determined. Sedimentation rates have been estimated for Tertiary and Quaternary times, and their temporal as well as their spatial changes are discussed. Basin structure and morphology exerted an important influence on sediment distribution. During the Early Tertiary major sediment source regions in the southern Barents Sea and to the north and west of Iceland could be identified; these source regions supplied the bulk of the sediment fill of the Norwegian-Greenland Sea. Since inception of a “glacial” type sedimentation major elements of the sea surface circulation seem to have controlled the sediment input into this polar and subpolar deep-sea basin.