Radiocarbon dates, biomarker concentrations and compound-specific isotopes data of sediment core GeoB7702-3
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| Format: | Dataset Open Access |
| Sprache: | en |
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PANGAEA
2024
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| _version_ | 1867169520262578176 |
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| author | Meyer, Vera D Pätzold, Jürgen Mollenhauer, Gesine Castañeda, Isla S Schouten, Stefan Schefuß, Enno |
| author_facet | Meyer, Vera D Pätzold, Jürgen Mollenhauer, Gesine Castañeda, Isla S Schouten, Stefan Schefuß, Enno |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | 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. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_961489 |
| institution | PANGAEA |
| language | en |
| publishDate | 2024 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Radiocarbon dates, biomarker concentrations and compound-specific isotopes data of sediment core GeoB7702-3 Meyer, Vera D Pätzold, Jürgen Mollenhauer, Gesine Castañeda, Isla S Schouten, Stefan Schefuß, Enno African Humid Period; Carbon isotopes; Center for Marine Environmental Sciences; hydroclimate; Hydrogen isotopes; leaf-wax biomarkers; MARUM; Nile River; Westerlies 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. |
| title | Radiocarbon dates, biomarker concentrations and compound-specific isotopes data of sediment core GeoB7702-3 |
| topic | African Humid Period; Carbon isotopes; Center for Marine Environmental Sciences; hydroclimate; Hydrogen isotopes; leaf-wax biomarkers; MARUM; Nile River; Westerlies |
| url | https://doi.org/10.1594/PANGAEA.961489 |