Radiocarbon dates, biomarker concentrations and compound-specific isotopes data of sediment core GeoB7702-3

The dataset comprises radiocarbon dates of planktic foraminifera and hydrogen and carbon stable isotopic compositions (δD and δ13C) of high molecular weight n-alkanoic acids (leaf-wax biomarkers) in a sediment core from the eastern Mediterranean (GeoB7702-3). The records cover the past 18 ka. In this dataset new radiocarbon dates of planktic foraminifera are combined with previously published radiocarbon dates of planktic foraminifera (Castañeda et al., 2010; doi:10.1594/PANGAEA.736913) in order to produce a new age depth model. Next to a compilation of all radiocarbon dates used for the updated chronology the new age-depth model for the core are provided. The δD signature of high molecular weight n-alkanoic acids is reported as measured values (corrected for methylation (δD)) and as ice-volume corrected values (δDwax). Moreover, δD is converted into δD of precipitation by correcting it for past changes in the relative contributions of C3 versus C4 plants and ice-volume changes (δDp-vc-ic). In addition to δDp-vc-ic values of high molecular weight n-alkanoic acids we include the δDp-vc-ic of high molecular weight n-alkanes (leaf-wax lipid). The latter is calculated based on original δD data from Castañeda et al. (2016) (doi:10.1594/PANGAEA.858559). The reported δ13C-values of high molecular weight n-alkanoic acids are corrected for methylation (δ13Cwax). Based on δ13Cwax the relative contribution of C4 plants to the pool of high molecular n-alkanoic acids is calculated (%C4). It is also provided for high molecular weight n-alkanes which is calculated using original δ13Cwax-data from Castañeda et al. (2016) (doi:10.1594/PANGAEA.858559). Next to the isotopic compositions we also report concentrations of n-akanoic acids and n-alkanes.

Data and Resources

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Cite this as

Meyer, Vera D, Pätzold, Jürgen, Mollenhauer, Gesine, Castañeda, Isla S, Schouten, Stefan, Schefuß, Enno (2024). Dataset: Radiocarbon dates, biomarker concentrations and compound-specific isotopes data of sediment core GeoB7702-3. https://doi.org/10.1594/PANGAEA.961489

DOI retrieved: 2024

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.961489
Author Meyer, Vera D
Given Name Vera D
Family Name Meyer
More Authors
Pätzold, Jürgen
Mollenhauer, Gesine
Castañeda, Isla S
Schouten, Stefan
Schefuß, Enno
Source Creation 2024
Publication Year 2024
Resource Type application/zip - filename: Meyer-etal_2023
Subject Areas
Name: Atmosphere

Name: Lithosphere

Related Identifiers
Title: Evolution of winter precipitation in the Nile river watershed since the last glacial
Identifier: https://doi.org/10.5194/cp-20-523-2024
Type: DOI
Relation: References
Year: 2024
Source: Climate of the Past
Authors: Meyer Vera D , Pätzold Jürgen , Mollenhauer Gesine , Castañeda Isla S , Schouten Stefan , Schefuß Enno .