Paul, Sophie Anna Luise: Neodymium isotope compositions of authigenic and detrital sediment phases from the Mauritanian Margin of METEOR cruise M182 [dataset]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.993324 (dataset in review), In: Paul, Sophie Anna Luise; Dale, Andrew W: Neodymium isotope compositions, rare earth element concentrations and ancillary geochemical data for sediment cores, pore water and bottom seawater from the Mauritanian Margin of METEOR cruise M182 [dataset bundled publication]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.991555 (dataset in review)
Abstract:
This study reveals how rare earth elements and yttrium (REY) cycle through an ocean margin system, clarifying the mechanisms that govern benthic REY fluxes and the preservation of Nd isotope compositions (εNd) in authigenic sediment phases.
Samples were collected during cruise M182 in 2022. Bulk sediment samples were freeze-dried and ground prior to leaching. 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 using 40% acetic acid buffered to pH 4 using Na acetate. The leftover detrital sediment fraction was processed using alkaline fusion. Neodymium was purified using first BIORAD AG50W-X12 resin, followed by Eichrom Ln-spec resin. Samples were measured using a MC-ICP-MS (Thermo Fisher Neptune).
Related 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
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: 18.125543 * Median Longitude: -18.711190 * South-bound Latitude: 18.002000 * West-bound Longitude: -22.786350 * North-bound Latitude: 18.271530 * East-bound Longitude: -16.381820
Date/Time Start: 2022-06-05T10:40:04 * Date/Time End: 2022-07-01T14:39:04
Minimum DEPTH, sediment/rock: 0.005 m * Maximum DEPTH, sediment/rock: 0.200 m
Event(s):
M182_27-1 * Latitude: 18.002000 * Longitude: -22.786350 * Date/Time: 2022-06-05T10:40:04 * Elevation: -3414.0 m * Location: North Atlantic Ocean * Campaign: M182 (MOSES Eddy St. III) * Basis: Meteor (1986) * Method/Device: Multicorer with television (TVMUC)
M182_160-1 * Latitude: 18.271530 * Longitude: -16.381820 * Date/Time: 2022-06-29T16:08:19 * Elevation: -71.0 m * Location: North Atlantic Ocean * Campaign: M182 (MOSES Eddy St. III) * Basis: Meteor (1986) * Method/Device: Multicorer with television (TVMUC)
M182_172-1 * Latitude: 18.103100 * Longitude: -16.965400 * Date/Time: 2022-07-01T14:39:04 * Elevation: -1704.0 m * Location: North Atlantic Ocean * Campaign: M182 (MOSES Eddy St. III) * Basis: Meteor (1986) * Method/Device: Multicorer with television (TVMUC)
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | Paul, Sophie Anna Luise | |||
| 2 | DEPTH, sediment/rock | Depth sed | m | Paul, Sophie Anna Luise | Geocode | |
| 3 | Depth, top/min | Depth top | m | Paul, Sophie Anna Luise | ||
| 4 | Depth, bottom/max | Depth bot | m | Paul, Sophie Anna Luise | ||
| 5 | Sample code/label | Sample label | Paul, Sophie Anna Luise | |||
| 6 | Neodymium-143/Neodymium-144 ratio | 143Nd/144Nd | Paul, Sophie Anna Luise | Multiple collector inductively-coupled plasma mass spectrometer (MC-ICP-MS), Nu | ||
| 7 | Neodymium-143/Neodymium-144 ratio, standard error | 143Nd/144Nd std e | ± | Paul, Sophie Anna Luise | Multiple collector inductively-coupled plasma mass spectrometer (MC-ICP-MS), Nu | |
| 8 | ε-Neodymium | ε-Nd | Paul, Sophie Anna Luise | Multiple collector inductively-coupled plasma mass spectrometer (MC-ICP-MS), Nu | ||
| 9 | ε-Neodymium, standard error | ε-Nd std e | ± | Paul, Sophie Anna Luise | Multiple collector inductively-coupled plasma mass spectrometer (MC-ICP-MS), Nu | 2SE |
| 10 | ε-Neodymium, standard deviation | ε-Nd std dev | ± | Paul, Sophie Anna Luise | Multiple collector inductively-coupled plasma mass spectrometer (MC-ICP-MS), Nu | 2SD |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0) (License comes into effect after moratorium ends)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
504 data points