Z. dt. Geol. Ges.147/1S. 137-144, 4 Abb.de.Txt.Stuttgart, März 1996

Schwermetall-Anreicherungen in Ostsee-Sedimenten (Kieler Bucht)
- Frühdiagenese und anthropogener Eintrag.

[Enrichment of heavy metals in Baltic Sea sediments (Kiel Bight)
Early diagenesis and anthropogenic influence.]


Authoren : Kirsten Meiwirth, Lüder Kruse, Susanne Wachtendorf, Melanie Wienberg, Matthias Zabel & Horst D. Schulz
Abstract :

From a sedimentcore of Kiel Bight (Western Baltic) depth profiles as well of porewater as of solid phase contents were measured by groups of students. Those existing for porewater are the following: alkalinity, pH, Eh, O2, H2S, NH4, NO3, PO4, Cl, SO4, F, Fe, Ca, Mg, Mn, Ba, Sr, and Si. Solid-phase was analysed on Fe, Al, Ca, Mg, Ba, Sr, Mn, Cu, Ni, Pb, and Zn. This work treats data of heavy metals, while porewater profiles are consulted for correct interpretation.

Concentration profiles of some heavy metals in the solid-phase (Cu, Pb, Zn) show a significant anthropogenic enrichment in the upper part of the core compared to the preindustrially deposited background. However, influence of early diagenetic processes (especially for Mn and Ni) and in the case of the Manganese concentration profile more anoxic bottomwater conditions are also relevant.

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