Carbon isotopes composition of otoliths from surface samples of the Lomonosov Ridge, Arctic Ocean ...

• Main Authors: Hillaire-Marcel, Claude, de Vernal, Anne, Rong, Yufen, Roberge, Philippe, Song, Tengfei
• Format: Dataset
• Language: English
• Published: PANGAEA 2022
• Subjects: 14C age; Arctic Ocean; benthic mixing; fish otolith; low sedimentation rate; δ13C-values; ORDINAL NUMBER; Event label; Latitude of event; Longitude of event; Elevation of event; Laboratory code/label; Taxon/taxa; Age, dated; Age, dated standard deviation; Otolith, δ13C; Giant box corer; Giant box grab; Mini Carbon Dating System MICADAS; PS87; Polarstern; Alfred Wegener Institute; Lomonosov Ridge
• Online Access: https://dx.doi.org/10.1594/pangaea.949186; https://doi.pangaea.de/10.1594/PANGAEA.949186

Fossil fish otoliths were collected in surface sediments (0 to 1 cm) from the Lomonosov Ridge, Arctic Ocean, recovered with a giant box corer during the R/V Polarstern Expedition PS87 of 2014. Carbon isotopic measurements of 22 specimens were performed in 2022, at the 14C laboratory of the Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research, Germany, with a MICADAS-mini carbon dating system. Results show a wide range of 14C-ages from ~44 to 0.4 ka, illustrating the mixing of late Quaternary fossils at the sediment surface in low sedimentation rate sites of the Arctic Ocean. Significant δ13C-values differences could be identified between pelagic and benthic fish, in accordance with their distinct habitats. ...