Mean element and biogenic silica concentrations in Arctic Ocean sediments (Table 1), supplement to: Kitchell, Jennifer A; Clark, David L (1982): Late Cretaceous-Paleogene paleogeography and paleocirculation: evidence of north polar upwelling. Palaeogeography, Palaeoclimatology, Palaeoecology, 40(1-3), 135-165

Jennifer A Kitchell & David L Clark
Quantitative determination of biogenic silica in Late Cretaceous and Paleogene deep-sea sediment cores from the central Arctic Ocean provides evidence of open-ocean polar upwelling. The timing of polar upwelling coincides with periods of a weakened meridional thermal gradient, suggesting that heat transport to the poles by oceanic circulation may have been important. The timing of biogenic silica deposition in the Arctic precedes its deposition in both the Norwegian-Greenland Sea of the North Atlantic and the...
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