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

Lutze, Gerhard F; Pflaumann, Uwe; Weinholz, Peter (1986): Age models of sediment cores from the North-West African continental margin. PANGAEA, https://doi.org/10.1594/PANGAEA.548493, Supplement to: Lutze, GF et al. (1986): Jungquartäre Fluktuationen der benthischen Foraminiferenfaunen in Tiefsee-Sedimenten vor NW-Afrika - Eine Reaktion auf Produktivitätsänderungen im Oberflächenwasser. Meteor Forschungsergebnisse, Deutsche Forschungsgemeinschaft, Reihe C Geologie und Geophysik, Gebrüder Bornträger, Berlin, Stuttgart, C40, 163-180

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

RIS CitationBibTeX CitationShow MapGoogle Earth

Abstract:
A statistical analysis ol 15 deep sea cores in the eastern North Atlantic off NW Africa revealed the typical fluctuation pattern of distinct species proups as has been described from various parts of the world ocean.
Only the "WBF-group" appears to be correlated with global climatic changes, i.e. warmer periods as the Eemian and the Atlanticum. A partly antagonistic "High Productivity group" (HPR-group) is in general not linked with global changes but times of increased fertility in the surface water and the resulting flux of organic matter reaching the bottom. The groups were extracted from cluster analysis of more than 150 surface samples (HPR-group) and a factor analysis of selected cores (WBF-group).
In contrast to previous studies the observed fluctuations can not be explained by drastic changes in bottom water masses, but by the pulsation of a distinct "High Productivity Patch" in space and time. At present, this patch is located below the well known upwelling area between 22° and 12° northern latitude. It shifted to the north (up to 27 °N) during the latest glacial period ( 18 ky), indicating an equivalent shift of upwelling productivity caused by advection of nutrient rich upwelling SACW-waters, probably during most of isotopic stages 2 and 3.
Coverage:
Median Latitude: 22.971587 * Median Longitude: -15.389083 * South-bound Latitude: 5.670000 * West-bound Longitude: -19.851667 * North-bound Latitude: 34.891000 * East-bound Longitude: -7.815000
Date/Time Start: 1971-10-31T00:00:00 * Date/Time End: 1980-03-23T00:00:00
Event(s):
GIK12309-3 * Latitude: 26.838330 * Longitude: -15.110000 * Date/Time: 1971-10-31T00:00:00 * Elevation: -2749.0 m * Recovery: 7.5 m * Location: East Atlantic * Campaign: M25 * Basis: Meteor (1964) * Method/Device: Sphincter corer (SPC)
GIK12328-5 * Latitude: 21.145000 * Longitude: -18.573333 * Date/Time: 1971-11-08T00:00:00 * Elevation: -2778.0 m * Recovery: 6.19 m * Location: East Atlantic * Campaign: M25 * Basis: Meteor (1964) * Method/Device: Kasten corer (KAL) * Comment: offset to GIK12328-4 = 22 cm
GIK12329-6 * Latitude: 19.371700 * Longitude: -18.930000 * Date/Time: 1971-11-09T00:00:00 * Elevation: -3320.0 m * Recovery: 8.45 m * Location: East Atlantic * Campaign: M25 * Basis: Meteor (1964) * Method/Device: Sphincter corer (SPC) * Comment: offset to GIK12329-4 = 9 cm
Size:
8 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. Lutze, GF; Pflaumann, U; Weinholz, P (1986): Radiometric dates and ages of isotopic stage boundaries of sediment core GIK12309-3, off NW Africa (Table 1). https://doi.org/10.1594/PANGAEA.544641
  2. Lutze, GF; Pflaumann, U; Weinholz, P (1986): Radiometric dates and ages of isotopic stage boundaries of sediment core GIK12328-5, off NW Africa (Table 1). https://doi.org/10.1594/PANGAEA.544642
  3. Lutze, GF; Pflaumann, U; Weinholz, P (1986): Radiometric dates and ages of isotopic stage boundaries of sediment core GIK12329-6, off NW Africa (Table 1). https://doi.org/10.1594/PANGAEA.544643
  4. Lutze, GF; Pflaumann, U; Weinholz, P (1986): Radiometric dates and ages of isotopic stage boundaries of sediment core GIK12347-2, off NW Africa (Table 1). https://doi.org/10.1594/PANGAEA.544644
  5. Lutze, GF; Pflaumann, U; Weinholz, P (1986): Radiometric dates and ages of isotopic stage boundaries of sediment core GIK12392-1, off NW Africa (Table 1). https://doi.org/10.1594/PANGAEA.544645
  6. Lutze, GF; Pflaumann, U; Weinholz, P (1986): Radiometric dates and ages of isotopic stage boundaries of sediment core GIK13519-1, off NW Africa (Table 1). https://doi.org/10.1594/PANGAEA.544646
  7. Lutze, GF; Pflaumann, U; Weinholz, P (1986): Radiometric dates and ages of isotopic stage boundaries of sediment core GIK15669-1, off NW Africa (Table 1). https://doi.org/10.1594/PANGAEA.544647
  8. Lutze, GF; Pflaumann, U; Weinholz, P (1986): Radiometric dates and ages of isotopic stage boundaries of sediment core GIK15672-1, off NW Africa (Table 1). https://doi.org/10.1594/PANGAEA.544648