Hallmaier Moritz moritz.hallmaier@iup.uni-heidelberg.de 0000-0001-9056-9396 GEOMAR - Helmholtz Centre for Ocean Research Kiel GEOMAR http://www.geomar.de https://ror.org/02h2x0161 Gutjahr Marcus mgutjahr@geomar.de https://www.geomar.de/mgutjahr/ 0000-0003-2556-2619 GEOMAR - Helmholtz Centre for Ocean Research Kiel GEOMAR http://www.geomar.de https://ror.org/02h2x0161 Hemming Sidney R sidney@ldeo.columbia.edu 0000-0001-8117-2303 Lippold Jörg joerg.lippold@geow.uni-heidelberg.de 0000-0003-1976-5065 Weber Michael E mike.weber@uni-bonn.de https://www.steinmann.uni-bonn.de/arbeitsgruppen/strukturgeologie/mitarbeiter/michael-e.-weber 0000-0003-2175-8980 Eisenhauer Anton aeisenhauer@geomar.de 0000-0002-6874-7050 GEOMAR - Helmholtz Centre for Ocean Research Kiel GEOMAR http://www.geomar.de https://ror.org/02h2x0161 2026 Detrital Pb isotope ratios of IODP Site U1537 dataset https://doi.pangaea.de/10.1594/PANGAEA.993179 2026-04-08T13:49:43 https://doi.pangaea.de/10.1594/PANGAEA.993168 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 (see dataset in Further Details). 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. Hallmaier Moritz moritz.hallmaier@iup.uni-heidelberg.de 0000-0001-9056-9396 Gutjahr Marcus mgutjahr@geomar.de https://www.geomar.de/mgutjahr/ 0000-0003-2556-2619 Hemming Sidney R sidney@ldeo.columbia.edu 0000-0001-8117-2303 Lippold Jörg joerg.lippold@geow.uni-heidelberg.de 0000-0003-1976-5065 Weber Michael E mike.weber@uni-bonn.de https://www.steinmann.uni-bonn.de/arbeitsgruppen/strukturgeologie/mitarbeiter/michael-e.-weber 0000-0003-2175-8980 Eisenhauer Anton aeisenhauer@geomar.de 0000-0002-6874-7050 submitted Deglacial Weddell Sea Deep Water Pulse triggered Southern Ocean overturning Weber Michael E mike.weber@uni-bonn.de https://www.steinmann.uni-bonn.de/arbeitsgruppen/strukturgeologie/mitarbeiter/michael-e.-weber 0000-0003-2175-8980 Bailey Ian i.baileyexeter@gmail.com 0000-0001-5150-5437 Hemming Sidney R sidney@ldeo.columbia.edu 0000-0001-8117-2303 Martos Yasmina M yasmartos@gmail.com Reilly Brendan T breilly@ldeo.columbia.edu 0000-0003-3666-4338 Ronge Thomas A ronge@iodp.tamu.edu 0000-0003-2625-719X Brachfeld Stefanie A brachfelds@mail.montclair.edu http://www.montclair.edu/profilepages/view_profile.php?username=brachfelds 0000-0003-4612-2866 Williams Trevor J williams@iodp.tamu.edu Raymo Maureen E Belt Simon T S.Belt@plymouth.ac.uk 0000-0002-1570-2924 Smik Lukas l.smik@exeter.ac.uk 0000-0003-2280-7342 Vogel Hendrik hendrik.vogel@geo.unibe.ch 0000-0002-9902-8120 Peck Victoria L vlp@bas.ac.uk https://www.bas.ac.uk/profile/vlp/ Armbrecht Linda Cage Alix G 0000-0001-9992-9757 Cardillo Fabricio G Du Zhiheng Fauth Gerson 0000-0003-2594-1424 Fogwill Chris J c.j.fogwill@keele.ac.uk 0000-0002-6471-1106 García Marga M 0000-0003-2632-6132 Garnsworthy Marlo Glüder Anna Guitard Michelle Gutjahr Marcus mgutjahr@geomar.de https://www.geomar.de/mgutjahr/ 0000-0003-2556-2619 Hernández-Almeida Iván ivan.hernandez@unibe.ch 0000-0002-9329-8357 Hoem Frida f.s.hoem@uu.nl 0000-0002-8834-6799 Hwang Ji-Hwan Iizuka Matsumi Kato Yuji 0000-0001-9420-487X Kenlee Bridget O'Connell Suzanne B soconnell@wesleyan.edu Pérez Lara F 0000-0002-6229-4564 Seki Osamu seki@pop.lowtem.hokudai.ac.jp Stevens Lee Tauxe Lisa Tripathi Shubham 0000-0002-0676-4744 Warnock Jonathan jonathanpwarnock@gmail.com 0000-0002-0900-613X Zheng Xufeng 2022 Antiphased dust deposition and productivity in the Antarctic Zone over 1.5 million years journal article Nature Communications 13 https://doi.org/10.1038/s41467-022-29642-5 2044 Reproducibility and processed reference materials for isotope measurements https://download.pangaea.de/reference/139152/attachments/ds7.txt Smoothed detrital 206Pb/204Pb record of IODP U1537 https://download.pangaea.de/reference/139153/attachments/ds6.txt -40.906 -40.906 -59.111 -59.111 -40.906 -59.111 -3712.0 -3712.0 IODP Integrated Ocean Drilling Program / International Ocean Discovery Program https://www.iodp.org/ 382-U1537 -59.111 -40.906 -3712.0 Exp382 Weber, Michael E Raymo, Maureen E 2019-03-20 2019-05-20 Punta Arenas, Chile Punta Arenas, Chile Joides Resolution https://www-odp.tamu.edu:443/resolutn.html Composite Core COMPCORE 2901 CC-BY-4.0 Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/ Number n # number Abundance or Count Hallmaier Moritz moritz.hallmaier@iup.uni-heidelberg.de 0000-0001-9056-9396 n [#] Sample code/label Sample label Hallmaier Moritz moritz.hallmaier@iup.uni-heidelberg.de 0000-0001-9056-9396 Sample label Depth, composite Depth comp mcd depth http://purl.obolibrary.org/obo/PATO_0001595 Luminous Intensity J http://dbpedia.org/resource/Luminous_intensity Hallmaier Moritz moritz.hallmaier@iup.uni-heidelberg.de 0000-0001-9056-9396 CCSF (m) Depth comp [mcd] AGE Age ka BP http://en.wikipedia.org/wiki/Kyr age http://purl.obolibrary.org/obo/PATO_0000011 Time T http://dbpedia.org/resource/Time Hallmaier Moritz moritz.hallmaier@iup.uni-heidelberg.de 0000-0001-9056-9396 Age [ka BP] Lead-206/Lead-204 ratio, detrital 206Pb/204Pb detr lead-206 206Pb https://en.wikipedia.org/wiki/Isotopes_of_lead lead-204 204Pb https://en.wikipedia.org/wiki/Isotopes_of_lead#List_of_isotopes ratio Hallmaier Moritz moritz.hallmaier@iup.uni-heidelberg.de 0000-0001-9056-9396 206Pb/204Pb detr Lead-206/Lead-204 ratio, detrital, standard error 206Pb/204Pb detr std e ± lead-206 206Pb https://en.wikipedia.org/wiki/Isotopes_of_lead lead-204 204Pb https://en.wikipedia.org/wiki/Isotopes_of_lead#List_of_isotopes ratio detrital standard error std e https://en.wikipedia.org/wiki/Standard_error Hallmaier Moritz moritz.hallmaier@iup.uni-heidelberg.de 0000-0001-9056-9396 2SE 206Pb/204Pb detr std e [±] Lead-207/Lead-204 ratio, detrital 207Pb/204Pb detr lead-207 http://purl.obolibrary.org/obo/CHEBI_52455 lead-204 204Pb https://en.wikipedia.org/wiki/Isotopes_of_lead#List_of_isotopes ratio Hallmaier Moritz moritz.hallmaier@iup.uni-heidelberg.de 0000-0001-9056-9396 207Pb/204Pb detr Lead-207/Lead-204 ratio, detrital, standard error 207Pb/204Pb detr std e ± lead-207 http://purl.obolibrary.org/obo/CHEBI_52455 lead-204 204Pb https://en.wikipedia.org/wiki/Isotopes_of_lead#List_of_isotopes ratio detrital standard error std e https://en.wikipedia.org/wiki/Standard_error Hallmaier Moritz moritz.hallmaier@iup.uni-heidelberg.de 0000-0001-9056-9396 2SE 207Pb/204Pb detr std e [±] Lead-208/Lead-204 ratio, detrital 208Pb/204Pb detr lead-208 208Pb https://en.wikipedia.org/wiki/Isotopes_of_lead#List_of_isotopes lead-204 204Pb https://en.wikipedia.org/wiki/Isotopes_of_lead#List_of_isotopes ratio Hallmaier Moritz moritz.hallmaier@iup.uni-heidelberg.de 0000-0001-9056-9396 208Pb/204Pb detr Lead-208/Lead-204 ratio, detrital, standard error 208Pb/204Pb detr std e ± lead-208 208Pb https://en.wikipedia.org/wiki/Isotopes_of_lead#List_of_isotopes lead-204 204Pb https://en.wikipedia.org/wiki/Isotopes_of_lead#List_of_isotopes ratio detrital standard error std e https://en.wikipedia.org/wiki/Standard_error Hallmaier Moritz moritz.hallmaier@iup.uni-heidelberg.de 0000-0001-9056-9396 2SE 208Pb/204Pb detr std e [±] Lead-208/Lead-206 ratio, detrital 208Pb/206Pb detr lead-208 208Pb https://en.wikipedia.org/wiki/Isotopes_of_lead#List_of_isotopes lead-206 206Pb https://en.wikipedia.org/wiki/Isotopes_of_lead ratio Hallmaier Moritz moritz.hallmaier@iup.uni-heidelberg.de 0000-0001-9056-9396 208Pb/206Pb detr Lead-208/Lead-206 ratio, detrital, standard error 208Pb/206Pb detr std e ± lead-208 208Pb https://en.wikipedia.org/wiki/Isotopes_of_lead#List_of_isotopes lead-206 206Pb https://en.wikipedia.org/wiki/Isotopes_of_lead ratio detrital standard error std e https://en.wikipedia.org/wiki/Standard_error Hallmaier Moritz moritz.hallmaier@iup.uni-heidelberg.de 0000-0001-9056-9396 2SE 208Pb/206Pb detr std e [±] Lead-207/Lead-206 ratio, detrital 207Pb/206Pb detr lead-207 http://purl.obolibrary.org/obo/CHEBI_52455 lead-206 206Pb https://en.wikipedia.org/wiki/Isotopes_of_lead ratio Hallmaier Moritz moritz.hallmaier@iup.uni-heidelberg.de 0000-0001-9056-9396 207Pb/206Pb detr Lead-207/Lead-206 ratio, detrital, standard error 207Pb/206Pb detr std e ± lead-207 http://purl.obolibrary.org/obo/CHEBI_52455 lead-206 206Pb https://en.wikipedia.org/wiki/Isotopes_of_lead ratio detrital standard error std e https://en.wikipedia.org/wiki/Standard_error Hallmaier Moritz moritz.hallmaier@iup.uni-heidelberg.de 0000-0001-9056-9396 2SE 207Pb/206Pb detr std e [±] Lead-208/Lead-207 ratio, detrital 208Pb/207Pb detr lead-208 208Pb https://en.wikipedia.org/wiki/Isotopes_of_lead#List_of_isotopes lead-207 http://purl.obolibrary.org/obo/CHEBI_52455 ratio Hallmaier Moritz moritz.hallmaier@iup.uni-heidelberg.de 0000-0001-9056-9396 208Pb/207Pb detr Lead-208/Lead-207 ratio, detrital, standard error 208Pb/207Pb detr std e ± lead-208 208Pb https://en.wikipedia.org/wiki/Isotopes_of_lead#List_of_isotopes lead-207 http://purl.obolibrary.org/obo/CHEBI_52455 ratio detrital standard error std e https://en.wikipedia.org/wiki/Standard_error Hallmaier Moritz moritz.hallmaier@iup.uni-heidelberg.de 0000-0001-9056-9396 2SE 208Pb/207Pb detr std e [±] Fraction, description Fraction desc Fraction description Hallmaier Moritz moritz.hallmaier@iup.uni-heidelberg.de 0000-0001-9056-9396 Fraction desc Comment Comment Hallmaier Moritz moritz.hallmaier@iup.uni-heidelberg.de 0000-0001-9056-9396 Comment CurationLevelC Enhanced curation https://wiki.pangaea.de/wiki/Curation_levels Antarctica detrital isotopes Lead isotopes Neodymium isotopes Scotia Sea Southern Ocean Weddell Sea geomar author22378 author22469 author22741 author27925 author29266 author34013 author34016 author35 author35358 author35551 author38073 author38503 author40306 author40946 author40977 author44831 author45047 author49 author50514 author51089 author58395 author601 author65074 author68958 author70369 author70593 author71271 author84429 author86084 author86086 author86087 author86088 author86089 author86090 author86091 author86092 author86093 author86094 author86095 author86096 author98321 basis5 campaign48138 curlevel30 event2990105 geocode1600 geocode1601 geocode2205 geocode8128 inst20147 journal16656 license21 method10895 param1570 param189657 param2 param552592 param552593 param552594 param552595 param552596 param552597 param552598 param552599 param552600 param552601 param552602 param552603 param77489 param790 pi98321 project4048 ref111270 ref138714 ref139152 ref139153 term1073131 term1073135 term1074468 term242 term264 term2663481 term2663825 term38527 term40710 term40733 term40996 term43884 term43975 term44025 term44034 term47158 term47208 term47764 term47765 term47873 term49964 term51599 term629 term68214