Paul, Sophie Anna Luise; Schmidt, Katja (2025): Dissolved rare earth element and yttrium concentrations in bottom seawater from the Pacific [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.982623, 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
Always quote citation above when using data! You can download the citation in several formats below.
Published: 2025-08-26 • DOI registered: 2025-09-24
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. Pore waters of marine sediments are the key environment in which early diagenetic exchange processes between seawater-derived Nd and terrigenous solid phases take place. This dataset contains dissolved rare earth element and yttrium (REY) concentrations of bottom seawater from the abyssal Pacific Ocean.
Samples were collected during cruises SO268 in 2019 and SO295 in 2022. Seawater samples were taken with NISKIN or GoFlo bottles attached to a CTD water sampling carousel or a bottom water sampler. Seawater was preserved by acidification to ~ pH 1.8 with concentrated ultrapure HCl.
REY were preconcentrated offline using a seaFAST (Elemental Scientific Inc., Nebraska, USA) with a 10 mL sample loop and using a NOBIAS PA-1 resin column. Samples were spiked with 100 ppt Tm and In to monitor yields and all REY were Tm corrected at the end of the data evaluation. Correction was usually within 5-15%. Preconcentrated samples were measured on a Thermo Fisher Element HR-ICP-MS (GEOMAR, Kiel) coupled to a CETAC Aridus 2 desolvating nebulizer for increased sensitivity and decreased oxide formation.
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: 12.695811 * Median Longitude: -120.357167 * South-bound Latitude: 11.859650 * West-bound Longitude: -125.915920 * North-bound Latitude: 14.019020 * East-bound Longitude: -117.014000
Date/Time Start: 2019-04-22T08:45:46 * Date/Time End: 2022-12-17T14:54:09
Minimum Elevation: -4529.0 m * Maximum Elevation: -4082.8 m
Event(s):
SO268/2_151-1 (CTD-14) * Latitude: 14.019017 * Longitude: -125.915817 * Date/Time: 2019-04-22T08:45:46 * Elevation: -4520.6 m * Location: Clarion-Clipperton Fraction Zone, North East Pacific Ocean * Campaign: SO268/2 * Basis: Sonne_2 * Method/Device: CTD/Rosette (CTD-RO) * Comment: BEL Reference; Position USBL
SO295_31-1 * Latitude: 11.930120 * Longitude: -117.026750 * Date/Time: 2022-11-12T06:12:51 * Elevation: -4085.0 m * Campaign: SO295 (Nodule Monit. II) * Basis: Sonne_2 * Method/Device: CTD/Rosette (CTD-RO)
Parameter(s):
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
158 data points