Kraal, Peter; Yücel, Mustafa; Slomp, Caroline P (2021): Pore-water and solid-phase chemistry for sediment cores with turbidites from the Black Sea [dataset bundled publication]. PANGAEA, https://doi.org/10.1594/PANGAEA.933151
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Abstract:
During the PhOxy cruise with R/V Pelagia in June 2013, sediments were collected with a multicorer in the eastern part of the Black Sea. The aim was to determine the geochemical siganture of sediments on the shelf and in the deep basin, and potentially track chemical changes to sediments that are transported into the sulfidic deep basin by turbidity currents. Sediment cores were cut at vertical resolution of 0.5-2.0 cm and the pore-water and solid-phase were separated by centrifugation. After filtration of the pore-water over 0.45 micrometer filter membranes, dissolved inorganic carbon (DIC), Fe, P, Mn, N (ammonium, nitrite, nitrate) and S (sulfate, sulfide) were measured in various sub-samples. After freeze drying and grinding, sub-samples of dry sediment were taken and solid-phase org-C, Al, Ca, Fe, Mn, Mo, P and S were determined by decalcification and combustion (org-C) or ICP-MS analysis of acid digest (other elements). Furthermore, various solid-phase Fe and P pools were determined using sequential chemical extraction protocols. From a second core, 10-mL wet sediment samples were taken at 5-cm resolution from a multicore with pre-drilled holes and transferred into glass vials with gas-tight, crimp-sealed rubber stoppers filled with N2-purged saturated NaCl (no headspace). Later, a N2 headspace was injected and the headspace was analyzed for CH4 by gas chromatography with a flame ionization detector (GC-FID, Thermo Finnigan).
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Supplement to:
Kraal, Peter; Yücel, Mustafa; Slomp, Caroline P (2019): Turbidite deposition and diagenesis in the southwestern Black Sea: Implications for biogeochemical cycling in an anoxic basin. Marine Chemistry, 209, 48-61, https://doi.org/10.1016/j.marchem.2019.01.001
Funding:
Dutch Research Council (NWO), grant/award no. 822.01013: Coupled cycling of phosphorus, iron and manganese in the Black Sea: elucidating the controls on mineral formation and burial in an anoxic basin
Dutch Research Council (NWO), grant/award no. 863.14.014: Iron mineral transformations and preservation: Effects of eutrophication-driven changes in sediment geochemistry
Dutch Research Council (NWO), grant/award no. 865.13.005: Response of the Iron Biogeochemical Cycle on Continental Shelves to Seawater Deoxygenation
European Research Council (ERC), grant/award no. 278364: Phosphorus dynamics in low-oxygen marine systems: quantifying the nutrient-climate connection in Earth's past, present and future (PHOXY)
Coverage:
Median Latitude: 42.420417 * Median Longitude: 29.847082 * South-bound Latitude: 41.463333 * West-bound Longitude: 29.278333 * North-bound Latitude: 43.735000 * East-bound Longitude: 30.678330
Date/Time Start: 2013-06-08T00:00:00 * Date/Time End: 2013-06-21T00:00:00
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Size:
2 datasets
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Datasets listed in this bundled publication
- Kraal, P; Yücel, M; Slomp, CP (2021): Methane concentration of sediment cores from the Black Sea. https://doi.org/10.1594/PANGAEA.933140
- Kraal, P; Yücel, M; Slomp, CP (2021): Pore-water and solid-phase chemistry of sediment cores from the Black Sea. https://doi.org/10.1594/PANGAEA.933147