PANGAEA_996477 Compound specific radiocarbon data from sediment core PS51/159-10, western Laptev Sea, Arctic Ocean Lin, Tsai-Wen; Grotheer, Hendrik; Hefter, Jens; Mollenhauer, Gesine Compound specific radiocarbon data from sediment core PS51/159-10, western Laptev Sea, Arctic Ocean 2026-09-07 PANGAEA Dataset https://doi.pangaea.de/10.1594/PANGAEA.996477 Investigator Tsai-Wen Lin tsai-wen.lin@awi.de Earth Science DEPTH, sediment/rock Depth, sediment/rock, top/minimum Depth, sediment/rock, bottom/maximum Compounds Carbon Fraction modern carbon, compound specific Fraction modern carbon, compound specific, standard deviation Sample code/label geoscientificInformation Arctic Ocean ARK-XIV/1b Biomarker Compound-specific radiocarbon analysis CSRA fatty acids Kasten corer Laptev Sea Last deglaciation Marine Sediment Core n-alkane n-alkanoic acids PS51/159-10 Radiocarbon dating terrestrial biomarkers Mini Carbon Dating System (MICADAS) Polarstern 1998-08-18 1998-08-18 Complete 76.766666666667 76.766666666667 116.03166666667 116.03166666667 0.125 m (DEPTH, sediment/rock) 4.015 m (DEPTH, sediment/rock) unrestricted CC-BY-4.0: Creative Commons Attribution 4.0 International English PANGAEA Data Publisher for Earth & Environmental Science https://www.pangaea.de/ Data Center Contact Michael Diepenbroek info@pangaea.de

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Bremen Bremen 28359 Germany online 70 data points text/tab-separated-values Lin, Tsai-Wen; Adolphi, Florian; Grotheer, Hendrik; Hefter, Jens; Tesi, Tommaso; Lachner, Johannes; Winkler, Stella; Wu, Junjie; Queiroz Alves, Eduardo; Mollenhauer, Gesine (preprint): Precisely dated records of pre-aged terrestrial organic matter release to the western Laptev Sea during the last deglaciation. Climate of the Past, https://doi.org/10.5194/egusphere-2026-4726 Douglas, Peter M J; Pagani, Mark; Eglinton, Timothy Ian; Brenner, Mark; Hodell, David A; Curtis, Jason H; Ma, Keith F; Breckenridge, Andy (2014): Pre-aged plant waxes in tropical lake sediments and their influence on the chronology of molecular paleoclimate proxy records. Geochimica et Cosmochimica Acta, 141, 346-364, https://doi.org/10.1016/j.gca.2014.06.030 Lin, Tsai-Wen; Tesi, Tommaso; Hefter, Jens; Grotheer, Hendrik; Wollenburg, Jutta Erika; Adolphi, Florian; Bauch, Henning A; Nogarotto, Alessio; Müller, Juliane; Mollenhauer, Gesine (2025): Environmental controls of rapid terrestrial organic matter mobilization to the western Laptev Sea since the Last Deglaciation. Climate of the Past, 21(4), 753-772, https://doi.org/10.5194/cp-21-753-2025 Mollenhauer, Gesine; Grotheer, Hendrik; Gentz, Torben; Bonk, Elizabeth; Hefter, Jens (2021): Standard operation procedures and performance of the MICADAS radiocarbon laboratory at Alfred Wegener Institute (AWI), Germany. Nuclear Instruments & Methods in Physics Research Section B-Beam Interactions with Materials and Atoms, 496, 45-51, https://doi.org/10.1016/j.nimb.2021.03.016 Sun, Shuwen; Meyer, Vera D; Dolman, Andrew M; Winterfeld, Maria; Hefter, Jens; Dummann, Wolf; McIntyre, Cameron; Montluçon, Daniel; Haghipour, Negar; Wacker, Lukas; Gentz, Torben; van der Voort, Tessa Sophia; Eglinton, Timothy Ian; Mollenhauer, Gesine (2020): 14C Blank Assessment in Small-Scale Compound-Specific Radiocarbon Analysis of Lipid Biomarkers and Lignin Phenols. Radiocarbon, 62(1), 207-218, https://doi.org/10.1017/RDC.2019.108 Wacker, Lukas; Christl, Marcus (2011): Data reduction for small radiocarbon samples–error propagation using the model of constant contamination. In: Ion Beam Physics, ETH Zurich, Annual Report 2011, Laboratory of Ion Beam Physics, ETH Zurich, Zurich, 36-37 Winterfeld, Maria; Mollenhauer, Gesine; Dummann, Wolf; Köhler, Peter; Lembke-Jene, Lester; Meyer, Vera D; Hefter, Jens; McIntyre, Cameron; Wacker, Lukas; Kokfelt, Ulla; Tiedemann, Ralf (2018): Deglacial mobilization of pre-aged terrestrial carbon from degrading permafrost. Nature Communications, 9(1), https://doi.org/10.1038/s41467-018-06080-w

Subsample slices thick between 1 and 4 cm were taken from sediment core PS51/159-10 for compound-specific radiocarbon analysis (CSRA) for terrestrial biomarkers. The subsample intervals were selected based on downcore variations in biomarker contents (Lin et al., 2025), to correspond to periods of rapid and little terrestrial organic matter mobilizations during the early last deglaciation and the Holocene. Target compounds include mid-chain (n-C23, n-C25) n-alkanes, high molecular weight (HMW, or long-chain) (n-C29, n-C31) n-alkanes, and HMW (n-C28:0) fatty acid. Lipid extractions and purifications for CSRA followed the procedure described in Winterfeld et al. (2018). Radiocarbon measurements on isolated compounds were conducted on samples containing a minimum of 40 µg C using a Mini Carbon Dating System (MICADAS), following the method described in Mollenhauer et al. (2021). CSRA values were reported as F14C, which were corrected for carbon introduced during methylation (Douglas et al., 2014) and processing blanks (Wacker and Christl, 2011). Processing blanks were assessed by analyzing modern and fossil laboratory standards processed alongside the samples, following Sun et al. (2020). The estimated background introduced during processing contained 5.5 ± 0.5 μg C with F14C = 0.7632 ± 0.0394 for n-C28:0 fatty acid measurements, and 2.4 ± 0.2 μg C with F14C = 0.3671 ± 0.0296 for n-alkane measurements. ** For all details see the full metadata description at "https://doi.pangaea.de/10.1594/PANGAEA.996477"!

https://doi.org/10.1016/j.gca.2014.06.030 Pre-aged plant waxes in tropical lake sediments and their influence on the chronology of molecular paleoclimate proxy records https://doi.org/10.1016/j.nimb.2021.03.016 Standard operation procedures and performance of the MICADAS radiocarbon laboratory at Alfred Wegener Institute (AWI), Germany https://doi.org/10.1017/RDC.2019.108 14C Blank Assessment in Small-Scale Compound-Specific Radiocarbon Analysis of Lipid Biomarkers and Lignin Phenols https://doi.org/10.1038/s41467-018-06080-w Deglacial mobilization of pre-aged terrestrial carbon from degrading permafrost https://doi.org/10.17815/jlsrf-3-163 Polarstern https://doi.org/10.5194/cp-21-753-2025 Environmental controls of rapid terrestrial organic matter mobilization to the western Laptev Sea since the Last Deglaciation https://doi.org/10.5194/egusphere-2026-4726 Precisely dated records of pre-aged terrestrial organic matter release to the western Laptev Sea during the last deglaciation https://store.pangaea.de/Images/Cores/PS-stationcard/PS51_159-stationcard.pdf PS51/159-10 DIF 9.4 2026-09-07 2026-09-07