Publication Date:
2023-07-10
Description:
Calcareous microfossils are widely used by paleoceanographers to investigate past sea-surface hydrology. Among these microfossils, planktonic foraminifera are probably the most extensively used tool (e.g. [1] for a review), as they are easy to extract from the sediment and can also be used for coupled geochemical (e.g; d18O, d13C, Mg/Ca) and paleo-ecological investigations. Planktonic foraminifera are marine protists, which build a calcareous shell made of several chambers which reflect in their chemistry the properties of the ambient water-masses. Planktonic foraminifera are known to thrive in various habitats, distributed not only along a latitudinal gradient, but also along different water-depth intervals within surface waters (0-1000 m). Regarding their biogeographical distribution, planktonic foraminifera assemblages therefore mirror different water-masses properties, such as temperature, salinity and nutrient content of the surface water in which they live. The investigation of the specific composition of a fossil assemblage (relative abundances) is therefore a way to empirically obtain (paleo)information on past variations of sea-surface hydrological parameters. This paper focuses on the planktonic foraminifera record from the Arctic domain. This polar region records peculiar sea-surface conditions, with the influence of nearly perennial sea-ice cover development. This has strong impact on living foraminifera populations and on the preservation of their shells in the underlying sediments.
Keywords:
302-M0004C; ACEX-M4C; AGE; Arctic Coring Expedition, ACEX; Arctic Ocean; CCGS Captain Molly Kool (Vidar Viking); Comment; Comment 2 (continued); Counting 〉125 µm fraction; Depth, composite; Depth, composite top; DEPTH, sediment/rock; Dry mass; DSDP/ODP/IODP sample designation; Echinoidea, spines; Exp302; Foraminifera, benthic; Foraminifera, planktic; Foraminifera, planktic, other; Globigerina bulloides; Globigerina quinqueloba; Grain size, sieving; Integrated Ocean Drilling Program / International Ocean Discovery Program; Intercore correlation; IODP; Morphotypes number; Neogloboquadrina atlantica; Neogloboquadrina pachyderma; Neogloboquadrina pachyderma dextral; Neogloboquadrina pachyderma sinistral; Pteropoda; Ratio; Sample code/label; Size fraction 〉 0.125 mm; Size fraction 〉 0.400 mm; Split; Volume; Wet mass
Type:
Dataset
Format:
text/tab-separated-values, 3709 data points
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