de.pangaea.dataset973140 und dataset PANGAEA
info@pangaea.de
https://www.pangaea.de/ information pointOfContact 2026-10-14T14:54:08Z https://doi.pangaea.de/10.1594/PANGAEA.973140 <gco:CharacterString>Pb isotope composition in the ferromanganese crust PS75/247-2</gco:CharacterString> 2024-10-24T09:47:55 publication https://doi.org/10.1594/PANGAEA.973140 Huang, Huang
huang17323@gmail.com
https://orcid.org/0000-0001-9723-9955 information author Gutjahr, Marcus
mgutjahr@geomar.de
https://orcid.org/0000-0003-2556-2619 information author Song, Zhaoyang
zsong@geomar.de
https://orcid.org/0000-0003-4105-8682 information author Fietzke, Jan
jfietzke@geomar.de
https://orcid.org/0000-0002-5530-7208 information author Frank, Martin
mfrank@geomar.de
https://orcid.org/0000-0002-8606-4421 information author Kuhn, Gerhard
ge_ku@uni-bremen.de
https://orcid.org/0000-0001-6069-7485 information author Hillenbrand, Claus-Dieter
hilc@bas.ac.uk
https://orcid.org/0000-0003-0240-7317 information author Christl, Marcus
mchristl@phys.ethz.ch
https://orcid.org/0000-0002-3131-6652 information author Garbe-Schönberg, Dieter
dieter.garbe-schoenberg@ifg.uni-kiel.de
https://orcid.org/0000-0001-9006-9463 information author Goepfert, Tyler J author Eisenhauer, Anton
aeisenhauer@geomar.de
https://orcid.org/0000-0002-6874-7050 information author PANGAEA
info@pangaea.de
https://www.pangaea.de/ information publisher tableDigital 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. completed Huang, Huang
huang17323@gmail.com
https://orcid.org/0000-0001-9723-9955 information principalInvestigator Antarctic Circumpolar Current Ferromanganese crust Pb isotopes theme <gco:CharacterString>PANGAEA Keyword List</gco:CharacterString> 1995-01-01 creation PANGAEA
info@pangaea.de
https://www.pangaea.de/ information pointOfContact copyright copyright CC-BY-4.0: Creative Commons Attribution 4.0 International textTable und geoscientificInformation -123.218833 -123.218833 -69.142167 -69.142167 2010-03-23T15:17:00 2010-03-23T15:17:00 0.0 0.0 Analytical method thematicClassification Age physicalMeasurement Ma Ma DEPTH, sediment/rock physicalMeasurement DEPTH, crust m m Distance physicalMeasurement sample depth from the crust surface mm mm Lead-206/Lead-204 ratio thematicClassification Laser ablation multicollector - ICP-MS (LA-MC-ICP-MS) Lead-206/Lead-204 ratio, standard error physicalMeasurement Calculated, 2 standard error; for solution based method: 2SD ± ± Lead-207/Lead-204 ratio thematicClassification Laser ablation multicollector - ICP-MS (LA-MC-ICP-MS) Lead-207/Lead-204 ratio, standard error physicalMeasurement Calculated, 2 standard error; for solution based method: 2SD ± ± Lead-208/Lead-204 ratio thematicClassification Laser ablation multicollector - ICP-MS (LA-MC-ICP-MS) Lead-208/Lead-204 ratio, standard error physicalMeasurement Calculated, 2 standard error; for solution based method: 2SD ± ± Lead-208/Lead-206 ratio thematicClassification Laser ablation multicollector - ICP-MS (LA-MC-ICP-MS) Lead-208/Lead-206 ratio, standard error physicalMeasurement Calculated, 2 standard error; for solution based method: 2SD ± ± Lead-207/Lead-206 ratio thematicClassification Laser ablation multicollector - ICP-MS (LA-MC-ICP-MS) Lead-207/Lead-206 ratio, standard error physicalMeasurement Calculated, 2 standard error; for solution based method: 2SD ± ± Lead-208/Lead-207 ratio thematicClassification Laser ablation multicollector - ICP-MS (LA-MC-ICP-MS) Lead-208/Lead-207 ratio, standard error physicalMeasurement Calculated, 2 standard error; for solution based method: 2SD ± ± text/tab-separated-values unknown https://doi.pangaea.de/10.1594/PANGAEA.973140?format=textfile download dataset The data set was checked for completeness, correctness, and consistency of metainformation. Validity of used methods was checked and - if applicable - precision and range of data. EVENT LABEL: PS75/247-2 * LATITUDE: -69.142167 * LONGITUDE: -123.218833 * DATE/TIME: 2010-03-23T15:17:00 * ELEVATION: -1734.0 m * LOCATION: Haxby Seamount (Marie Byrd Seamounts) * CAMPAIGN: ANT-XXVI/3 * BASIS: Polarstern * METHOD/DEVICE: Dredge 1 box with corals, 1 box with rocks, 1 bag with living corals (frozen at -80 C) 2010-03-23T15:17:00 Supplement to <gco:CharacterString>Seawater Lead Isotopes Record Early Miocene to Modern Circulation Dynamics in the Pacific Sector of the Southern Ocean</gco:CharacterString> 2024-01-01 publication https://doi.org/10.1029/2024PA004922 Huang, Huang
huang17323@gmail.com
https://orcid.org/0000-0001-9723-9955 information author Gutjahr, Marcus
mgutjahr@geomar.de
https://orcid.org/0000-0003-2556-2619 information author Song, Zhaoyang
zsong@geomar.de
https://orcid.org/0000-0003-4105-8682 information author Fietzke, Jan
jfietzke@geomar.de
https://orcid.org/0000-0002-5530-7208 information author Frank, Martin
mfrank@geomar.de
https://orcid.org/0000-0002-8606-4421 information author Kuhn, Gerhard
ge_ku@uni-bremen.de
https://orcid.org/0000-0001-6069-7485 information author Hillenbrand, Claus-Dieter
hilc@bas.ac.uk
https://orcid.org/0000-0003-0240-7317 information author Christl, Marcus
mchristl@phys.ethz.ch
https://orcid.org/0000-0002-3131-6652 information author Garbe-Schönberg, Dieter
dieter.garbe-schoenberg@ifg.uni-kiel.de
https://orcid.org/0000-0001-9006-9463 information author Goepfert, Tyler J author Eisenhauer, Anton
aeisenhauer@geomar.de
https://orcid.org/0000-0002-6874-7050 information author documentDigital Paleoceanography and Paleoclimatology 39(12) e2024PA004922