Mecklenburg Bight

Stereoradiographs of sediment core MB from a depth of 27 m in the Mecklenburg Bight (station no. 159).

The stereoradiographs above are shown in a reduced scale. This makes it possible to study the sedimentary structures in three dimensions without the help of a stereoscope. Start with your nose close to the monitor, pull your face slowly away from it, and look through the image.

Click here to get a better resolution of the stereoradiographs.

The deposits in this core are reworked due to biotubation and at some levels probably also due to erosion (and perhabs also due to trawling). The hardness index of this core, 3.4, corresponds to a mean dry and wet bulk density of 0.34 and 1.23 respectively, to a mean porosity of 87 % and to a mean void ratio of 7 in the upper 0.1 m of the core. At the core depths 0.1, 0,5 and 1.0 cm the void ratio amounted to 22, 10 and 9 respectively.

 

Downcore variation in content of solids in sediment core MB.

The harder layers at the approximate core depths 4 and 18 cm mark periods with more intense physical reworking. The downcore increase in accumulated amount of solids is somewhat higher in this core than in the other X-rayed cores from the southwestern Baltic Sea, sampled during the Baseline study of Contaminants in the Baltic Sea in 1993.

Back.

Back to my front page.