You're currently viewing an old version of this dataset. To see the current version, click here.

Planktic and benthic stable oxygen and carbon isotope, IRD, planktic foraminifera data and sand fraction content of sediment core PS1904-2

Sediment core PS1904 reveals continuous records of planktic and benthic foraminiferal stable isotopes (d18O/d13C) from the north-eastern Greenland continental margin. The data show good comparability with other records from the Nordic Seas, allowing the stratigraphic range of PS1904 to be dated to Marine Isotope Stage (MIS) 6. Focusing on MIS 5 reveals light d18O values during MIS 5a compared to the last interglacial peak (MIS 5e) which indicates that surface and bottom water layers were strongly affected by freshwater during the former event. We present two possible scenarios explaining the origin and routing of the freshwater: (i) drainage of a Eurasian proglacial lake coupled with the collapse of the Kara Sea Ice Sheet at the MIS 5b/a boundary, and (ii) destabilization and melting of the nearby Greenland Ice Sheet. Although both scenarios could have acted simultaneously, sediment records from the Eurasian sector of the Arctic Ocean hint at the proglacial lake system in north-western Siberia as the largest freshwater source. Regardless of the actual source, the freshwater lowered the surface ocean salinity causing water column stratification and sea ice expansion. Increased sea-ice abundance led to a higher albedo and probably contributed to the cooling and global ice sheet growth that occurred subsequently during MIS 4.

Data and Resources

This dataset has no data

Cite this as

Telesiński, Maciej Mateusz, Bauch, Henning A, Spielhagen, Robert F (2018). Dataset: Planktic and benthic stable oxygen and carbon isotope, IRD, planktic foraminifera data and sand fraction content of sediment core PS1904-2. https://doi.org/10.1594/PANGAEA.895535

DOI retrieved: 2018

Additional Info

Field Value
Imported on November 30, 2024
Last update November 30, 2024
License CC-BY-4.0
Source https://doi.org/10.1594/PANGAEA.895535
Author Telesiński, Maciej Mateusz
Given Name Maciej Mateusz
Family Name Telesiński
More Authors
Bauch, Henning A
Spielhagen, Robert F
Source Creation 2018
Publication Year 2018
Resource Type text/tab-separated-values - filename: Telesinski-etal_2018
Subject Areas
Name: BiologicalClassification

Name: LandSurface

Name: Lithosphere

Name: Paleontology

Related Identifiers
Title: Causes and consequences of Arctic freshwater routing into the Nordic Seas during late Marine Isotope Stage 5
Identifier: https://doi.org/10.1002/jqs.3060
Type: DOI
Relation: IsSupplementTo
Year: 2018
Source: Journal of Quaternary Science
Authors: Telesiński Maciej Mateusz , Bauch Henning A , Spielhagen Robert F .