Gäng, Frederik; Böning, Philipp; Brüchert, Volker; Lahajnar, Niko; Pahnke, Katharina (2025): Geochemical analysis of recent marine sediment cores from cruises AHAB04, AHAB05 and M76/1 off Namibia [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.982496
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Published: 2025-05-14 • DOI registered: 2025-06-12
Abstract:
This dataset comprises sedimentary bulk contents of major elements (Total Organic Carbon (TOC), Aluminum (Al), Titanium (Ti), and Phosphorus (P) and trace elements Uranium (U), Barium (Ba), Nickel (Ni), and Zirconium (Zr)) obtained from both marine sediment cores and hinterland samples from Namibia. The marine cores were collected during research cruises AHAB04 and AHAB05 (March 2004) and M76/2 (May 2008) in the Benguela Upwelling System. Hinterland samples were collected from fine-grained outcrops in the Tsauchab River Valley near Sossusvlei and wet-sieved into grain-size fractions <20 µm, 20–63 µm, >63 µm. Total carbon and total inorganic carbon were measured using a carbon/sulfur analyzer (ELTRA CS 580), and TOC was calculated as the difference between total carbon and total inorganic carbon. Aluminum, Ti, P, Zr, U, Ba, Ni were analyzed via wavelength-dispersive X-ray fluorescence analysis (Panalytical Axios Plus). These data provide high-resolution geochemical profiles for the reconstructions of sediment provenance, grain-size effects and depositional conditions on the southeastern Atlantic margin. Full analytical results are given in Gäng et al. (2023): https://doi.org/10.1016/j.gca.2023.03.015.
Related to:
Gäng, Frederik; Böning, Philipp; Brüchert, Volker; Lahajnar, Niko; Pahnke, Katharina (2023): Critical assessment of U, Ba and Ni as redox and productivity proxies in organic-rich sediments underneath dynamic, highly productive waters. Geochimica et Cosmochimica Acta, 348, 206-220, https://doi.org/10.1016/j.gca.2023.03.015
Funding:
German Research Foundation (DFG), grant/award no. BO 6283/1-1: Sedimentary trace element cycling off Namibia
Coverage:
Median Latitude: -24.185022 * Median Longitude: 14.498178 * South-bound Latitude: -25.344333 * West-bound Longitude: 13.774667 * North-bound Latitude: -22.168000 * East-bound Longitude: 15.321000
Date/Time Start: 2004-03-04T00:00:00 * Date/Time End: 2008-05-19T00:00:00
Minimum DEPTH, sediment/rock: 0.0025 m * Maximum DEPTH, sediment/rock: 0.3950 m
Event(s):
AHAB_4_MPI-3 (MPI-3) * Latitude: -22.638000 * Longitude: 14.305000 * Date/Time: 2004-03-04T00:00:00 * Elevation: -70.0 m * Location: off Namibia * Campaign: AHAB_4 (44/04/04) * Basis: Alexander von Humboldt * Method/Device: Short corer (SC)
AHAB_4_MPI-4 (MPI-4) * Latitude: -22.168000 * Longitude: 14.066000 * Date/Time: 2004-03-05T00:00:00 * Elevation: -67.0 m * Location: off Namibia * Campaign: AHAB_4 (44/04/04) * Basis: Alexander von Humboldt * Method/Device: Short corer (SC)
AHAB_4_MPI-5 (MPI-5) * Latitude: -23.775000 * Longitude: 14.299000 * Date/Time: 2004-03-06T00:00:00 * Elevation: -112.0 m * Location: off Namibia * Campaign: AHAB_4 (44/04/04) * Basis: Alexander von Humboldt * Method/Device: Short corer (SC)
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | Gäng, Frederik | |||
| 2 | Latitude of event | Latitude | Gäng, Frederik | |||
| 3 | Longitude of event | Longitude | Gäng, Frederik | |||
| 4 | Elevation of event | Elevation | m | Gäng, Frederik | ||
| 5 | Sample code/label | Sample label | Gäng, Frederik | |||
| 6 | Size fraction | Size fraction | Gäng, Frederik | |||
| 7 | DEPTH, sediment/rock | Depth sed | m | Gäng, Frederik | Geocode | |
| 8 | Carbon, organic, total | TOC | % | Gäng, Frederik | Calculated, TC minus TOC | |
| 9 | Sodium | Na | % | Gäng, Frederik | ||
| 10 | Titanium | Ti | % | Gäng, Frederik | X-ray fluorescence spectrometer (XRF), PANalytical Axios Plus | |
| 11 | Aluminium | Al | % | Gäng, Frederik | ||
| 12 | Phosphorus | P | % | Gäng, Frederik | X-ray fluorescence spectrometer (XRF), PANalytical Axios Plus | |
| 13 | Barium | Ba | mg/kg | Gäng, Frederik | X-ray fluorescence spectrometer (XRF), PANalytical Axios Plus | original given in ppm |
| 14 | Nickel | Ni | mg/kg | Gäng, Frederik | X-ray fluorescence spectrometer (XRF), PANalytical Axios Plus | original given in ppm |
| 15 | Uranium | U | mg/kg | Gäng, Frederik | X-ray fluorescence spectrometer (XRF), PANalytical Axios Plus | original given in ppm |
| 16 | Zirconium | Zr | mg/kg | Gäng, Frederik | X-ray fluorescence spectrometer (XRF), PANalytical Axios Plus | original given in ppm |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
2461 data points
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