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Hommers, Harald; Sarnthein, Michael (2020): Saharan dust transported Quartz grains in sediment cores GIK13289-1/-2 and GIK13291-1, off Senegal (NW Africa) [dataset bundled publication]. PANGAEA, https://doi.org/10.1594/PANGAEA.922474

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Published: 2020-09-08 • DOI registered: 2020-10-24

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Abstract:
Two deep-sea cores, GIK13891 and GIK13291, retrieved off Mauretania (NW Africa) from the top of a ca. 250 m high seamount and from the seamount's foot were studied. Planktonic foraminifera oxygen isotope records in conjunction with 14C ages in the upper core sections were used to establish a stratigraphy. Sedimentological studies of both cores focused on the occurrence and abundance of giant grains of up to 1500 µm. Three possible transport ways for those giant grains are being discussed:
a) transport by turbidity currents
b) erosion from the seamount top
c) eolian delivery.
The sedimentological results, including SEM pictures, point mainly to erosion and additional eolian delivery of the giant grains.
Keyword(s):
NW Africa; quartz grains; Saharan dust; Senegal
Related to:
Hommers, Harald (1989): Riesenkörner in Staubsedimenten von zwei Tiefseekernen vor Senegal, NW-Afrika (18°N, 18°W). Diploma Thesis, Geologisch-Paläontologisches Institut, Christian-Albrechts-Universität, Kiel, Germany, 35 pp
Project(s):
Institute for Geosciences, Christian Albrechts University, Kiel (GIK/IfG)
Coverage:
Median Latitude: 18.066444 * Median Longitude: -18.028544 * South-bound Latitude: 18.053000 * West-bound Longitude: -18.067300 * North-bound Latitude: 18.073167 * East-bound Longitude: -18.009167
Date/Time Start: 1975-08-06T00:00:00 * Date/Time End: 1975-08-06T00:00:00
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Size:
6 datasets

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Datasets listed in this bundled publication

  1. Hommers, H; Sarnthein, M (2020): Sample dry weights and accumulation rates for bulk sediment and carbonate-free sand-sized fractions of sediment core GIK13289-1/-2. https://doi.org/10.1594/PANGAEA.922466
  2. Zahn, R; Hommers, H; Sarnthein, M (2020): Stable isotope ratios of benthic foraminifera of sediment core GIK13289-1/2. https://doi.org/10.1594/PANGAEA.922464
  3. Zahn, R; Hommers, H; Sarnthein, M (2020): Stable isotope ratios of planktonic foraminifera of sediment core GIK13289-1/2. https://doi.org/10.1594/PANGAEA.922465
  4. Hommers, H; Sarnthein, M (2020): Number of quartz grains >150 µm and percentage distribution by size range between 150 µm and >400 µm in sediment core GIK13289-1/-2. https://doi.org/10.1594/PANGAEA.922471
  5. Hommers, H; Sarnthein, M (2020): Sample dry weights and accumulation rates for bulk sediment and carbonate-free sand-sized fractions of sediment core GIK13291-1. https://doi.org/10.1594/PANGAEA.922467
  6. Hommers, H; Sarnthein, M (2020): Number of quartz grains >150µm and percentage distribution by size range between 150µm and >400µm in sediment core GIK13291-1. https://doi.org/10.1594/PANGAEA.922473