Huang Huang huang17323@gmail.com 0000-0001-9723-9955 Laoshan Laboratory https://ror.org/041w4c980 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 Song Zhaoyang zsong@geomar.de 0000-0003-4105-8682 National Sun Yat-sen University, Taiwan https://ror.org/00mjawt10 Fietzke Jan jfietzke@geomar.de 0000-0002-5530-7208 GEOMAR - Helmholtz Centre for Ocean Research Kiel GEOMAR http://www.geomar.de https://ror.org/02h2x0161 Frank Martin mfrank@geomar.de https://www.geomar.de/mfrank/ 0000-0002-8606-4421 GEOMAR - Helmholtz Centre for Ocean Research Kiel GEOMAR http://www.geomar.de https://ror.org/02h2x0161 Kuhn Gerhard ge_ku@uni-bremen.de 0000-0001-6069-7485 Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven AWI https://www.awi.de/ https://ror.org/032e6b942 Hillenbrand Claus-Dieter hilc@bas.ac.uk 0000-0003-0240-7317 British Antarctic Survey, Cambridge, Cambridge, United Kingdom BAS http://www.antarctica.ac.uk/ https://ror.org/01rhff309 Christl Marcus mchristl@phys.ethz.ch 0000-0002-3131-6652 Eidgenössische Technische Hochschule Zürich ETHZ http://www.ethz.ch/ https://ror.org/05a28rw58 Garbe-Schönberg Dieter dieter.garbe-schoenberg@ifg.uni-kiel.de 0000-0001-9006-9463 Christian-Albrechts-Universität zu Kiel CAU http://www.uni-kiel.de/ https://ror.org/04v76ef78 Goepfert Tyler J Arizona State University ASU https://www.asu.edu https://ror.org/03efmqc40 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 2024 Pb isotope composition in the ferromanganese crust PS75/247-2 dataset https://doi.org/10.1594/PANGAEA.973140 2024-10-24T09:47:55 Lead (Pb) isotope measurements are performed in the ferromanganese crust PS75/247-2, dredged on the southern flank of Haxby Seamount in the Pacific sector of the SO, using laser ablation coupled to a MC-ICP-MS (LA-MC-ICP-MS). The measurement is targeted at the bulk sample in this crust. We used smaller laser spot sizes (each integrating about 8 kyr of growth) to resolve glacial-interglacial cyclic Pb isotope variations in the youngest part of our record. We also used larger laser spot sizes to integrate a sampling interval of approximately 40 kyr of growth (i.e., one early Pleistocene glacial cycle) in order to detect long-term changes beyond orbital cyclicity throughout the past 20 Ma. In order to verify the laser ablation-based Pb isotope data, the Pb isotope compositions of samples from 10 different depths in crust Haxby was also analysed by conventional solution-based method. The depth in the sample list represents the distance from the measurement spot to the sample surface. Pb isotope is a sensitive water mass tracer and our data reveal that the Antarctic Circumpolar Current (ACC) has experienced five stable circulation states since the early Miocene which were separated by four major transitions observed at 17.5-14.6, 12, 10 and 5 Ma. According to our data the modern ACC configuration formed 5 million years ago, likely in response to the closure of the Panama Seaway. Our data also show that changes in the latitudinal position of the ACC were linked to the middle Miocene waxing and waning of the Antarctic ice sheets, which emphasizes the ACC's critical role as a key control of Antarctic glaciation. Huang Huang huang17323@gmail.com 0000-0001-9723-9955 Gutjahr Marcus mgutjahr@geomar.de https://www.geomar.de/mgutjahr/ 0000-0003-2556-2619 Song Zhaoyang zsong@geomar.de 0000-0003-4105-8682 Fietzke Jan jfietzke@geomar.de 0000-0002-5530-7208 Frank Martin mfrank@geomar.de https://www.geomar.de/mfrank/ 0000-0002-8606-4421 Kuhn Gerhard ge_ku@uni-bremen.de 0000-0001-6069-7485 Hillenbrand Claus-Dieter hilc@bas.ac.uk 0000-0003-0240-7317 Christl Marcus mchristl@phys.ethz.ch 0000-0002-3131-6652 Garbe-Schönberg Dieter dieter.garbe-schoenberg@ifg.uni-kiel.de 0000-0001-9006-9463 Goepfert Tyler J Eisenhauer Anton aeisenhauer@geomar.de 0000-0002-6874-7050 2024 Seawater Lead Isotopes Record Early Miocene to Modern Circulation Dynamics in the Pacific Sector of the Southern Ocean journal article Paleoceanography and Paleoclimatology 39(12) https://doi.org/10.1029/2024PA004922 e2024PA004922 -123.218833 -123.218833 -69.142167 -69.142167 -123.218833 -69.142167 2010-03-23T15:17:00 2010-03-23T15:17:00 0.0 0.0 vertical profile PS75/247-2 https://store.pangaea.de/Images/Cores/PS-stationcard/PS75_247-stationcard.pdf -69.142167 -123.218833 Haxby Seamount (Marie Byrd Seamounts) -1734.0 2010-03-23T15:17:00 ANT-XXVI/3 PS75 Wellington, New Zealand 2010-01-29T00:00:00 Punta Arenas, Chile 2010-04-05T00:00:00 Polarstern https://doi.org/10.17815/jlsrf-3-163 DBLK 8013132 Gohl, Karsten doi:10.2312/BzPM_0617_2010 20100068 hdl:10013/epic.37051.d001 http://www.awi.de/fileadmin/user_upload/MET/PolarsternExpeditionMaps/ANT-XXVI-3.png hdl:10013/epic.44562.d001 doi:10.1594/PANGAEA.847944 Polarstern https://doi.org/10.17815/jlsrf-3-163 DBLK 8013132 Dredge DRG benthos samplers http://vocab.nerc.ac.uk/collection/L05/current/24/ 1 box with corals, 1 box with rocks, 1 bag with living corals (frozen at -80 C) 15510 CC-BY-4.0 Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/ Analytical method Analyt method Huang Huang huang17323@gmail.com 0000-0001-9723-9955 Analyt method Age Age Ma age http://purl.obolibrary.org/obo/PATO_0000011 Huang Huang huang17323@gmail.com 0000-0001-9723-9955 Age [Ma] DEPTH, sediment/rock Depth sed m depth http://purl.obolibrary.org/obo/PATO_0001595 sediment http://purl.obolibrary.org/obo/ENVO_00002007 rock Length L http://dbpedia.org/resource/Length Huang Huang huang17323@gmail.com 0000-0001-9723-9955 DEPTH, crust Depth sed [m] Distance Dist mm distance http://purl.obolibrary.org/obo/PATO_0000040 Length L http://dbpedia.org/resource/Length Huang Huang huang17323@gmail.com 0000-0001-9723-9955 sample depth from the crust surface Dist [mm] Lead-206/Lead-204 ratio 206Pb/204Pb ratio Laser ablation multicollector - ICP-MS (LA-MC-ICP-MS) Huang Huang huang17323@gmail.com 0000-0001-9723-9955 206Pb/204Pb Lead-206/Lead-204 ratio, standard error 206Pb/204Pb 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 standard error std e https://en.wikipedia.org/wiki/Standard_error Calculated, 2 standard error 2SE Huang Huang huang17323@gmail.com 0000-0001-9723-9955 for solution based method: 2SD 206Pb/204Pb std e [±] Lead-207/Lead-204 ratio 207Pb/204Pb ratio Laser ablation multicollector - ICP-MS (LA-MC-ICP-MS) Huang Huang huang17323@gmail.com 0000-0001-9723-9955 207Pb/204Pb Lead-207/Lead-204 ratio, standard error 207Pb/204Pb 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 standard error std e https://en.wikipedia.org/wiki/Standard_error Calculated, 2 standard error 2SE Huang Huang huang17323@gmail.com 0000-0001-9723-9955 for solution based method: 2SD 207Pb/204Pb std e [±] Lead-208/Lead-204 ratio 208Pb/204Pb ratio Laser ablation multicollector - ICP-MS (LA-MC-ICP-MS) Huang Huang huang17323@gmail.com 0000-0001-9723-9955 208Pb/204Pb Lead-208/Lead-204 ratio, standard error 208Pb/204Pb 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 standard error std e https://en.wikipedia.org/wiki/Standard_error Calculated, 2 standard error 2SE Huang Huang huang17323@gmail.com 0000-0001-9723-9955 for solution based method: 2SD 208Pb/204Pb std e [±] Lead-208/Lead-206 ratio 208Pb/206Pb ratio Laser ablation multicollector - ICP-MS (LA-MC-ICP-MS) Huang Huang huang17323@gmail.com 0000-0001-9723-9955 208Pb/206Pb Lead-208/Lead-206 ratio, standard error 208Pb/206Pb 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 standard error std e https://en.wikipedia.org/wiki/Standard_error Calculated, 2 standard error 2SE Huang Huang huang17323@gmail.com 0000-0001-9723-9955 for solution based method: 2SD 208Pb/206Pb std e [±] Lead-207/Lead-206 ratio 207Pb/206Pb ratio Laser ablation multicollector - ICP-MS (LA-MC-ICP-MS) Huang Huang huang17323@gmail.com 0000-0001-9723-9955 207Pb/206Pb Lead-207/Lead-206 ratio, standard error 207Pb/206Pb std e ± standard error std e https://en.wikipedia.org/wiki/Standard_error Calculated, 2 standard error 2SE Huang Huang huang17323@gmail.com 0000-0001-9723-9955 for solution based method: 2SD 207Pb/206Pb std e [±] Lead-208/Lead-207 ratio 208Pb/207Pb ratio Laser ablation multicollector - ICP-MS (LA-MC-ICP-MS) Huang Huang huang17323@gmail.com 0000-0001-9723-9955 208Pb/207Pb Lead-208/Lead-207 ratio, standard error 208Pb/207Pb 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 standard error std e https://en.wikipedia.org/wiki/Standard_error Calculated, 2 standard error 2SE Huang Huang huang17323@gmail.com 0000-0001-9723-9955 for solution based method: 2SD 208Pb/207Pb std e [±] CurationLevelC Enhanced curation https://wiki.pangaea.de/wiki/Curation_levels citable Antarctic Circumpolar Current Ferromanganese crust Pb isotopes geomar author22511 author32978 author34016 author35 author37493 author448 author494 author62412 author7 author71792 author72578 basis1 campaign3390924 campaign33970 curlevel30 event2589516 geocode1 geocode1599 geocode1600 geocode1601 geocode8128 inst153 inst1815 inst20143 inst20147 inst21549 inst21779 inst32 inst38 journal16885 license21 method10654 method16902 method9133 param102249 param171658 param18988 param191673 param191687 param191688 param191689 param191691 param24194 param24196 param24198 param502940 param5126 param5130 param88339 pi72578 ref131352 term1073131 term1073135 term1073628 term1074468 term2299441 term242 term2663825 term26982 term28362 term37891 term38263 term38527 term40733 term41056 term43863 term47764 term47765 term50721 term51137 term74899 topotype3