Paul, Sophie Anna Luise (2025): Neodymium isotope compositions of authigenic and detrital sedimentary phases from sediment cores during SONNE cruise SO268/1 and SO268/2 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.981264, In: Paul, Sophie Anna Luise; Scholz, Florian; Fröhberg, Nico; Schmidt, Katja (2025): Neodymium isotope compositions, rare earth element concentrations and ancillary geochemical data for sediment cores, pore water and bottom seawater from the Atlantic and Pacific Oceans [dataset bundled publication]. PANGAEA, https://doi.org/10.1594/PANGAEA.981262
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Published: 2025-08-18 • DOI registered: 2025-09-16
Abstract:
he Neodymium (Nd) isotopic signature (εNd) has been widely used as a proxy to reconstruct past ocean circulation. Recently it has been increasingly questioned which archives can be reliably used to extract authigenic εNd used for the reconstruction of past ocean circulation and under which environmental conditions bottom seawater εNd are altered and the original water mass signature is overprinted. This dataset contains Nd isotope compositions of authigenic and detrital sedimentary phases from the abyssal Pacific Ocean, focusing on the behavior of the Nd isotope composition in oxic deep-sea sediments during early diagenesis.
Samples were collected during cruise SO268 in 2019 using multicorers. Authigenic phases were extracted through a 10s leaching procedure using 0.005 M hydroxylammonium hydrochloride, 1.5% acetic acid, and 0.03 M Na-EDTA buffered to ca. pH 4 with NaOH solution (Huang et al., 2021). The detrital sediment fraction was processed using alkaline fusion. Neodymium was purified using first BIORAD AG50W-X12 resin, followed by Eichchrom Ln-spec resin. Samples were measured by MC-ICP-MS
Project(s):
JPI Oceans - Ecological Aspects of Deep-Sea Mining (JPIO-MiningImpact)
Funding:
German Research Foundation (DFG), grant/award no. 458637508: Early diagenetic alteration of rare earth element and yttrium (REY) signals in marine sediments and impact on the use of REY as tracers in past and present marine environments
Coverage:
Median Latitude: 12.975375 * Median Longitude: -121.462642 * South-bound Latitude: 11.840783 * West-bound Longitude: -125.916717 * North-bound Latitude: 14.104867 * East-bound Longitude: -117.017317
Date/Time Start: 2019-03-03T09:33:07 * Date/Time End: 2019-05-08T06:52:59
Minimum DEPTH, sediment/rock: 0.01 m * Maximum DEPTH, sediment/rock: 0.18 m
Event(s):
SO268/1_18-1 (MUC-04) * Latitude: 11.924233 * Longitude: -117.017317 * Date/Time: 2019-03-03T09:33:07 * Elevation: -4099.3 m * Location: Clarion-Clipperton Fraction Zone, North East Pacific Ocean * Campaign: SO268/1 * Basis: Sonne_2 * Method/Device: MultiCorer (MUC) * Comment: GER Trial; Position USBL
SO268/1_67-1 (MUC-16) * Latitude: 14.104867 * Longitude: -125.861300 * Date/Time: 2019-03-18T11:51:49 * Elevation: -4514.1 m * Location: Clarion-Clipperton Fraction Zone, North East Pacific Ocean * Campaign: SO268/1 * Basis: Sonne_2 * Method/Device: MultiCorer (MUC) * Comment: BEL Trial
SO268/2_139-1 (MUC-30) * Latitude: 14.031617 * Longitude: -125.916717 * Date/Time: 2019-04-19T11:48:29 * Elevation: -4523.5 m * Location: Clarion-Clipperton Fraction Zone, North East Pacific Ocean * Campaign: SO268/2 * Basis: Sonne_2 * Method/Device: MultiCorer (MUC) * Comment: BEL Reference; Position USBL
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | Paul, Sophie Anna Luise | |||
| 2 | Date/Time of event | Date/Time | Paul, Sophie Anna Luise | |||
| 3 | Latitude of event | Latitude | Paul, Sophie Anna Luise | |||
| 4 | Longitude of event | Longitude | Paul, Sophie Anna Luise | |||
| 5 | Station label | Station | Paul, Sophie Anna Luise | |||
| 6 | DEPTH, sediment/rock | Depth sed | m | Paul, Sophie Anna Luise | Geocode | |
| 7 | Depth, top/min | Depth top | m | Paul, Sophie Anna Luise | ||
| 8 | Depth, bottom/max | Depth bot | m | Paul, Sophie Anna Luise | ||
| 9 | Sample code/label | Sample label | Paul, Sophie Anna Luise | |||
| 10 | Neodymium-143/Neodymium-144 ratio | 143Nd/144Nd | Paul, Sophie Anna Luise | |||
| 11 | Neodymium-143/Neodymium-144 ratio, standard error | 143Nd/144Nd std e | ± | Paul, Sophie Anna Luise | 2 SE | |
| 12 | ε-Neodymium | ε-Nd | Paul, Sophie Anna Luise | isotopic composition | ||
| 13 | ε-Neodymium, error | ε-Nd e | ± | Paul, Sophie Anna Luise | 2 SE | |
| 14 | ε-Neodymium, standard deviation | ε-Nd std dev | ± | Paul, Sophie Anna Luise | 2 SD |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
324 data points