Not logged in
PANGAEA.
Data Publisher for Earth & Environmental Science

Kassens, Heidemarie; Sarnthein, Michael (1989): Grain size distribution, carbon content and wet bulk density of sediment cores in the equatorial Atlantic and the Norwegian Sea [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.696097, Supplement to: Kassens, H; Sarnthein, M (1989): A link between paleoceanography, early diagenetic cementation, and shear strength maxima in Late Quaternary deep-sea sediments? Paleoceanography, 4(3), 253-269, https://doi.org/10.1029/PA004i003p00253

Always quote citation above when using data! You can download the citation in several formats below.

RIS CitationBibTeX CitationShow MapGoogle Earth

Abstract:
Near-surface sediments from the equatorial east Atlantic and the Norwegian Sea exhibit pronounced shear strength maxima in profiles from the peak Holocene and Pleistocene. These semi-indurated layers start to occur at 8-102 cm below the sediment surface and can be explained neither by the modal composition nor by the effective overburden pressure of the sediments. However, scanning electron microscope and microprobe data exhibit micritic crusts and crystal carpets, which are clearly restricted to (undisturbed) samples from indurated layers and form a manifest explanation for their origin. The minerals precipitated comprise calcite, aragonite, and in samples more proximal to the African continent SiO2 needles, and needles of as yet unidentified K-Mg-Fe-Al silicates, crusts of which dominate the indurated layers in the Norwegian Sea. By their stratigraphic position in deep-sea sediments the carbonate-based shear strength maxima are tentatively ascribed to dissolved adjacent pteropod layers from the early Holocene and hence to short-lived no-analogue events of early diagenesis. Possibly, they have been controlled by a reduced organic carbon flux, leading to increased aragonite preservation in the deep sea.
Project(s):
Institute for Geosciences, Christian Albrechts University, Kiel (GIK/IfG)
Quaternary Environment of the Eurasian North (QUEEN)
Funding:
Fourth Framework Programme (FP4), grant/award no. MAS3980185: Quaternary Environment of the Eurasian North
Coverage:
Median Latitude: 27.999384 * Median Longitude: -13.886176 * South-bound Latitude: 4.733333 * West-bound Longitude: -22.865000 * North-bound Latitude: 70.305000 * East-bound Longitude: 4.905000
Date/Time Start: 1983-07-11T00:00:00 * Date/Time End: 1986-07-13T00:00:00
Event(s):
GIK16402-1 * Latitude: 14.416660 * Longitude: -20.566660 * Date/Time: 1983-07-11T00:00:00 * Elevation Start: -4203.0 m * Elevation End: 0.0 m * Location: Atlantic Ocean * Campaign: M65 (GEOTROPEX 83, NOAMP I) * Basis: Meteor (1964) * Method/Device: Giant box corer (GKG)
GIK16403-1 * Latitude: 14.376000 * Longitude: -20.566800 * Date/Time: 1983-07-12T00:00:00 * Elevation: -4234.0 m * Location: Atlantic Ocean * Campaign: M65 (GEOTROPEX 83, NOAMP I) * Basis: Meteor (1964) * Method/Device: Box corer (BC)
GIK16404-1 * Latitude: 12.671660 * Longitude: -21.298330 * Date/Time: 1983-07-13T00:00:00 * Elevation: -4787.0 m * Location: Atlantic Ocean * Campaign: M65 (GEOTROPEX 83, NOAMP I) * Basis: Meteor (1964) * Method/Device: Giant box corer (GKG)
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
7 datasets

Download Data

Download ZIP file containing all datasets as tab-delimited text — use the following character encoding:

Datasets listed in this publication series

  1. Kassens, H; Sarnthein, M (1989): (Table 2) Carbon, wet bulk density and grain size distribution of sediment core GIK16453-2 in the equatorial Atlantic. https://doi.org/10.1594/PANGAEA.418243
  2. Kassens, H; Sarnthein, M (1989): (Table 2) Carbon, wet bulk density and grain size distribution of sediment core GIK16455-1 in the equatorial Atlantic. https://doi.org/10.1594/PANGAEA.418244
  3. Kassens, H; Sarnthein, M (1989): (Table 2) Carbon, wet bulk density and grain size distribution of sediment core GIK16457-1 in the equatorial Atlantic. https://doi.org/10.1594/PANGAEA.418245
  4. Kassens, H; Sarnthein, M (1989): (Table 2) Carbon, wet bulk density and grain size distribution of sediment core GIK16458-2 in the equatorial Atlantic. https://doi.org/10.1594/PANGAEA.418246
  5. Kassens, H; Sarnthein, M (1989): (Table 2) Carbon, wet bulk density and grain size distribution of sediment core GIK23055-2 in the Norwegian Sea. https://doi.org/10.1594/PANGAEA.418247
  6. Kassens, H; Sarnthein, M (1989): (Table 2) Carbon, wet bulk density and grain size distribution of sediment core GIK23059-2 in the Norwegian Sea. https://doi.org/10.1594/PANGAEA.418248
  7. Kassens, H; Sarnthein, M (1989): (Table 1) Core depth and age of shear strength maxima in sediment cores of the equatorial Atlantic and the Norwegian Sea. https://doi.org/10.1594/PANGAEA.696100