PANGAEA_993180 IODP Site U1537 > 63 µm weight fraction Hallmaier, Moritz; Gutjahr, Marcus; Hemming, Sidney R; Lippold, Jörg; Weber, Michael E; Eisenhauer, Anton IODP Site U1537 > 63 µm weight fraction 2026-04-08 PANGAEA Dataset https://doi.pangaea.de/10.1594/PANGAEA.993180 Investigator Moritz Hallmaier moritz.hallmaier@iup.uni-heidelberg.de Earth Science Number Sample code/label Depth, composite AGE Size fraction > 63 mm, boulder geoscientificInformation 382-U1537 Antarctica Composite Core detrital Exp382 isotopes Lead isotopes Neodymium isotopes Scotia Sea Southern Ocean Weddell Sea Joides Resolution Complete -59.111 -59.111 -40.906 -40.906 IODP Integrated Ocean Drilling Program / International Ocean Discovery Program access rights needed CC-BY-4.0: Creative Commons Attribution 4.0 International (License comes into effect after moratorium ends) 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 148 data points text/tab-separated-values Hallmaier, Moritz; Gutjahr, Marcus; Hemming, Sidney R; Lippold, Jörg; Weber, Michael E; Eisenhauer, Anton (submitted): Deglacial Weddell Sea Deep Water Pulse triggered Southern Ocean overturning. Weber, Michael E; Bailey, Ian; Hemming, Sidney R; Martos, Yasmina M; Reilly, Brendan T; Ronge, Thomas A; Brachfeld, Stefanie A; Williams, Trevor J; Raymo, Maureen E; Belt, Simon T; Smik, Lukas; Vogel, Hendrik; Peck, Victoria L; Armbrecht, Linda; Cage, Alix G; Cardillo, Fabricio G; Du, Zhiheng; Fauth, Gerson; Fogwill, Chris J; García, Marga M; Garnsworthy, Marlo; Glüder, Anna; Guitard, Michelle; Gutjahr, Marcus; Hernández-Almeida, Iván; Hoem, Frida; Hwang, Ji-Hwan; Iizuka, Matsumi; Kato, Yuji; Kenlee, Bridget; O'Connell, Suzanne B; Pérez, Lara F; Seki, Osamu; Stevens, Lee; Tauxe, Lisa; Tripathi, Shubham; Warnock, Jonathan; Zheng, Xufeng (2022): Antiphased dust deposition and productivity in the Antarctic Zone over 1.5 million years. Nature Communications, 13, 2044, https://doi.org/10.1038/s41467-022-29642-5 Reproducibility and processed reference materials for isotope measurements (URI: https://download.pangaea.de/reference/139152/attachments/ds7.txt)

We report radiogenic isotope records of IODP site U1537 in the Scotia Sea through the last 200,000 years. Detrital neodymium (ɛNd) varies between -3.8 and -8.6 (excluding two extremely radiogenic layers influenced by ash, which were excluded for the interpretation). Authigenic and detrital Pb isotope ratios show variations in line with detrital ɛNd. The data shows excursions towards older sediment and water mass sources during terminations, indicating a deglacial Weddell Sea Deep Water Pulse. All isotope measurements were conducted on a Multi-Collector Inductively Coupled Mass Spectrometer (MC-ICP-MS, Thermo Scientific Neptune Plus) at GEOMAR Helmholtz Center for Ocean Research. Smoothed records were fitted to the data with a Loess Bootstrap Model. For details on sample preparation and measurements consult the main manuscript. The radiogenic isotope datasets are complemented by the > 63 µm sediment weight fraction. For the last 170 ka the reported ages are based on the age model from Lu et al. 2022, older ages follow Weber et al. 2022. ** For all details see the full metadata description at "https://doi.pangaea.de/10.1594/PANGAEA.993180"!

http://en.wikipedia.org/wiki/Kyr AGE https://doi.org/10.1038/s41467-022-29642-5 Antiphased dust deposition and productivity in the Antarctic Zone over 1.5 million years https://www.iodp.org/ IODP https://www-odp.tamu.edu:443/resolutn.html Joides Resolution PANGAEA_993168 DIF 9.4 2026-04-08 2026-04-08