Huang, Huang; Gutjahr, Marcus; Kuhn, Gerhard; Hathorne, Ed C; Eisenhauer, Anton (2020): Authigenic Pb and Nd isotope composition snapshot of surface sediments in the Atlantic sector of the Southern Ocean [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.924604
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Abstract:
Radiogenic lead (Pb) and neodymium (Nd) isotope compositions extracted from authigenic phases in marine sediments are sensitive tracers to reconstruct past ocean circulation and water mass mixing. Chemical reductive leaching of hydrogenetic ferromanganese oxyhydroxides from bulk sediments is the most practical way to recover past seawater Pb and Nd isotope signatures in the Southern Ocean, due to the scarcity of alternative archives. However, the leached signal could be compromised if substantial quantities of Pb and Nd were released from non-hydrogenetic sediment fractions during chemical extraction. We developed a very short 10-seconds leaching method to extract reliable seawater Pb and Nd isotope signals from sediments in the Atlantic sector of Southern Ocean. Based on this method, we extracted seawater Pb and Nd signals from 70 core top sediments covering different geological settings in the Atlantic sector of Southern Ocean collected by past Polarstern RV cruises to evaluate factor controlling the regional authigenic Pb and Nd isotopic composition variability.
Supplement to:
Huang, H; Gutjahr, Marcus; Kuhn, Gerhard; Hathorne, Ed C; Eisenhauer, Anton (2021): Efficient Extraction of Past Seawater Pb and Nd Isotope Signatures From Southern Ocean Sediments. Geochemistry, Geophysics, Geosystems, 22(3), https://doi.org/10.1029/2020GC009287
Related to:
Huang, Huang; Gutjahr, Marcus; Eisenhauer, Anton; Kuhn, Gerhard (2019): Authigenic PB isotope composition of surface sediments from the Southern Ocean. PANGAEA, https://doi.org/10.1594/PANGAEA.909079
Coverage:
Median Latitude: -67.653690 * Median Longitude: -18.834234 * South-bound Latitude: -77.653200 * West-bound Longitude: -62.167500 * North-bound Latitude: -49.013330 * East-bound Longitude: 15.031000
Date/Time Start: 1983-02-13T00:00:00 * Date/Time End: 2016-03-16T12:40:00
Minimum DEPTH, sediment/rock: 0.01 m * Maximum DEPTH, sediment/rock: 0.07 m
Event(s):
PS63/068-1 * Latitude: -61.004600 * Longitude: 0.013500 * Date/Time: 2002-12-20T21:48:00 * Elevation: -5427.0 m * Recovery: 19.24 m * Location: South Atlantic Ocean * Campaign: ANT-XX/2 (PS63 06AQ200211_2) * Basis: Polarstern * Method/Device: Piston corer (BGR type) (KL) * Comment: 20 core sections: 0-0.27, 0.27-1.18, 1.18-2.18, 2.18-3.18, 3.18-4.18, 4.18-5.18, 5.18-6.18, 6.18-7.18, 7.18-8.18, 8.18-9.22, 9.22-10.23, 10.23-11.23, 11.23-12.23, 12.23-13.23, 13.23-14.23, 14.23-15.23, 15.23-16.24, 16.24-17.24, 17.24-18.24, 1824-19.24 m
PS97/085-1 * Latitude: -58.354500 * Longitude: -62.167500 * Date/Time: 2016-03-16T12:40:00 * Elevation: -3086.5 m * Recovery: 7.76 m * Location: Drake Passage * Campaign: PS97 (ANT-XXXI/3) * Basis: Polarstern * Method/Device: Piston corer (PC)
PS1010-1 (PS01/154) * Latitude: -77.241700 * Longitude: -34.540000 * Date/Time: 1983-02-13T00:00:00 * Elevation: -476.0 m * Penetration: 0.26 m * Recovery: 0.23 m * Location: Filchner Trough * Campaign: ANT-I/2 (PS01) * Basis: Polarstern * Method/Device: Giant box corer (GKG)
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | Huang, Huang | |||
| 2 | Latitude of event | Latitude | Huang, Huang | |||
| 3 | Longitude of event | Longitude | Huang, Huang | |||
| 4 | Elevation of event | Elevation | m | Huang, Huang | ||
| 5 | DEPTH, sediment/rock | Depth sed | m | Huang, Huang | Geocode | |
| 6 | Lead-206/Lead-204 ratio | 206Pb/204Pb | Huang, Huang | |||
| 7 | Lead-206/Lead-204 ratio, error | 206Pb/204Pb e | ± | Huang, Huang | 2 SE | |
| 8 | Lead-207/Lead-204 ratio | 207Pb/204Pb | Huang, Huang | |||
| 9 | Lead-207/Lead-204 ratio, error | 207Pb/204Pb e | ± | Huang, Huang | 2 SE | |
| 10 | Lead-208/Lead-204 ratio | 208Pb/204Pb | Huang, Huang | |||
| 11 | Lead-208/Lead-204 ratio, error | 208Pb/204Pb e | ± | Huang, Huang | 2 SE | |
| 12 | Lead-208/Lead-206 ratio | 208Pb/206Pb | Huang, Huang | |||
| 13 | Lead-208/Lead-206 ratio, error | 208Pb/206Pb e | ± | Huang, Huang | 2 SE | |
| 14 | Lead-207/Lead-206 ratio | 207Pb/206Pb | Huang, Huang | |||
| 15 | Lead-207/Lead-206, error | 207Pb/206Pb e | ± | Huang, Huang | 2 SE | |
| 16 | Lead-208/Lead-207 ratio | 208Pb/207Pb | Huang, Huang | |||
| 17 | Lead-208/Lead-207, error | 208Pb/207Pb e | ± | Huang, Huang | 2 SE | |
| 18 | ε-Neodymium | ε-Nd | Huang, Huang | |||
| 19 | ε-Neodymium, error | ε-Nd e | ± | Huang, Huang |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Size:
980 data points