Geochemical analysis of surface sediments from the ocean floor and from sea ice in the northern Atlantic and Arctic Oceans


Barium in marine terrigenous surface sediments of the European Nordic Seas is analysed to evaluate its potential as palaeoproductivity proxy. Biogenic Ba is calculated from Ba and Al data using a conventional approach. For the determination of appropriate detrital Ba/Al ratios a compilation of Ba and Al analyses in rocks and soils of the catchments surrounding the Nordic Seas is presented. The resulting average detrital Ba/Al ratio of 0.0070 is similar to global crustal average values. In the southern Nordic Seas the high input of basaltic material with a low Ba/Al ratio is evident from high values of magnetic susceptibility and low Al/Ti ratios. Most of the Ba in the marine surface sediments is of terrigenous and not of biogenic origin. Variability in the lithogenic composition has been considered by the application of regionally varying Ba/Al ratios. The biogenic Ba values are comparable with those observed in the central Arctic Ocean, they are lower than in other oceanic regions. Biogenic Ba values are correlated with other productivity proxies and with oceanographic data for a validation of the applicability in paleoceanography. In the Iceland Sea and partly in the marginal sea–ice zone of the Greenland Sea elevated values of biogenic Ba indicate seasonal phytoplankton blooms. In both areas paleoproductivities may be reconstructed based on Ba and Al data of sediment cores.

Longitude of POS146/1 Events were corrected on 2023-11-14

Supplement to: Pirrung, Michael; Illner, P; Matthiessen, Jens (2008): Biogenic barium in surface sediments of the European Nordic Seas. Marine Geology, 250(1-2), 89-103

Related Identifier IsSupplementTo
Metadata Access
Creator Pirrung, Michael
Publisher PANGAEA
Publication Year 2008
Rights Creative Commons Attribution 3.0 Unported;
OpenAccess true
Resource Type Supplementary Publication Series of Datasets; Collection
Format application/zip
Size 2 datasets
Discipline Earth System Research
Spatial Coverage (-30.898W, 59.198S, 118.212E, 88.260N); Norwegian Sea; North Sea; Atlantic Ocean; Iceland-Faeroe Ridge; Voring Plateau; Arctic Ocean; Norwegian-Greenland Sea; off Iceland; Greenland Sea; Svalbard Shelf; Northeast Water Polynya; Yermak Plateau; North Greenland Sea; Greenland Shelf; Hovgaard Fracture Zone; Scoresby Sund; Kolbeinsey Ridge; Greenland Slope; Svalbard; Nansen Basin; Amundsen Basin; Morris Jesup Rise; East Greenland Sea; Hochstetter Bugten, East Greenland; Kong-Oskar-Fjord, East Greenland; Sofia Sund, East Greenland; W Spitzbergen; East Greenland continental slope; Svalbard, Isfjorden
Temporal Coverage Begin 1985-07-26T00:00:00Z
Temporal Coverage End 2003-08-30T03:04:00Z