Paul, Sophie Anna Luise (2025): Neodymium isotope compositions of authigenic and detrital sedimentary phases from sediment cores during Maria S. Merian cruise MSM96 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.981263, 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:
The 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 Atlantic Ocean, focusing on the behavior of the Nd isotope composition in oxic deep-sea sediments during early diagenesis.
Samples were collected during cruise MSM96 in 2020 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). For selected samples, data is also provided for a "strong" leach using 0.05 M hydroxylammonium hydrochloride, 15% acetic acid and 0.03 M Na-EDTA buffered to ca. pH 4 with NaOH, that followed after a decarbonation step. The leftover 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
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: 45.542695 * Median Longitude: -15.432147 * South-bound Latitude: 38.155870 * West-bound Longitude: -17.514530 * North-bound Latitude: 48.100130 * East-bound Longitude: -14.696870
Date/Time Start: 2020-10-16T01:07:03 * Date/Time End: 2020-10-27T14:11:14
Minimum DEPTH, sediment/rock: 0.005 m * Maximum DEPTH, sediment/rock: 0.320 m
Event(s):
MSM96_11-1 (KIEL0233GEMU201) * Latitude: 47.898530 * Longitude: -14.815270 * Date/Time: 2020-10-16T01:07:03 * Elevation: -5730.4 m * Location: North Atlantic Ocean * Campaign: MSM96 (GPF 20‐3_088) * Basis: Maria S. Merian * Method/Device: Multicorer with television (TVMUC)
MSM96_22-1 (KIEL0233GERU201) * Latitude: 48.100130 * Longitude: -14.696870 * Date/Time: 2020-10-18T23:59:02 * Elevation: -4820.8 m * Location: North Atlantic Ocean * Campaign: MSM96 (GPF 20‐3_088) * Basis: Maria S. Merian * Method/Device: MultiCorer (MUC)
MSM96_27-1 (KIEL0233GEUU201) * Latitude: 48.016250 * Longitude: -14.701920 * Date/Time: 2020-10-20T11:12:25 * Location: North Atlantic Ocean * Campaign: MSM96 (GPF 20‐3_088) * Basis: Maria S. Merian * Method/Device: MultiCorer (MUC)
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:
639 data points