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

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 We...

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Bibliographic Details
Main Authors: Hillaire-Marcel, Claude, de Vernal, Anne, Rong, Yufen, Roberge, Philippe, Song, Tengfei
Format: Dataset
Language:English
Published: PANGAEA 2022
Subjects:
14C age
Age
dated
dated standard deviation
Arctic Ocean
ARK-XXVIII/4 ALEX2014
benthic mixing
Elevation of event
Event label
fish otolith
GBG
Giant box corer
Giant box grab
GKG
Laboratory code/label
Latitude of event
Longitude of event
low sedimentation rate
Mini Carbon Dating System (MICADAS)
ORDINAL NUMBER
Otolith
δ13C
Polarstern
PS87
PS87/023-2
PS87/030-2
PS87/055-1
PS87/068-2
PS87/074-1
PS87/076-2
PS87/086-1
PS87/099-3
Taxon/taxa
δ13C-values
Arctic
Alfred Wegener Institute
Lomonosov Ridge
Online Access:https://doi.pangaea.de/10.1594/PANGAEA.949186
https://doi.org/10.1594/PANGAEA.949186
Description
Summary: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.

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