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Dupont, Lydie M; Beug, Hans-Jürgen; Stalling, H; Tiedemann, Ralf (1989): Palynology of ODP Site 108-658. PANGAEA, https://doi.org/10.1594/PANGAEA.746645, Supplement to: Dupont, LM et al. (1989): First palynological results from ODP Site 658 at 21°N west off Africa: pollen as climate indicators. In: Ruddiman, W; Sarnthein, M; et al. (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 108, 93-111, https://doi.org/10.2973/odp.proc.sr.108.174.1989

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Abstract:
Ocean Drilling Program Site 658 at 21°N off northwest Africa has a high sedimentation rate and a high concentration of pollen grains and is thus very suitable for detailed pollen analysis.
The time scale for the upper 100 m (the last 670 k.y.) of Site 658 is based on biostratigraphic data and isotope stratigraphy. The pollen record has been divided into 34 zones. These are classified into 7 zone types covering a range from very arid to rather humid conditions.
The sequence shows a long-term climatic decline: strong glacial stages were found only after 480 k.y. and strong interglacial stages only before 280 k.y. The Site 658 record correlates well with a terrestrial sequence from northern Greece, although both records differ in their response to global climatic change.
Spectral analysis shows a 100- and a 42-k.y. period in the curves of pollen brought in by the northwest trade winds and only a 42-k.y. period in the curves of pollen mostly transported by the African Easterly Jet. A 31-k.y. period is found in the curves for Ephedra and Chenopodiaceae-Amaranthaceae. In addition, Ephedra shows a 54-k.y. period.
Project(s):
Coverage:
Latitude: 20.749200 * Longitude: -18.580800
Date/Time Start: 1986-03-04T00:00:00 * Date/Time End: 1986-03-08T00:45:00
Event(s):
108-658 * Latitude: 20.749200 * Longitude: -18.580800 * Date/Time Start: 1986-03-04T00:00:00 * Date/Time End: 1986-03-08T00:00:00 * Elevation: -2274.0 m * Penetration: 537.1 m * Recovery: 541.5 m * Location: Canarias Sea * Campaign: Leg108 * Basis: Joides Resolution * Method/Device: Composite Core (COMPCORE) * Comment: 59 cores; 537.1 m cored; 0 m drilled; 100.8% recovery
108-658A * Latitude: 20.749200 * Longitude: -18.580800 * Date/Time Start: 1986-03-04T15:15:00 * Date/Time End: 1986-03-07T01:15:00 * Elevation: -2274.0 m * Penetration: 300.4 m * Recovery: 294.98 m * Location: Canarias Sea * Campaign: Leg108 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 33 cores; 300.4 m cored; 0 m drilled; 98.2 % recovery
108-658B * Latitude: 20.749200 * Longitude: -18.580800 * Date/Time Start: 1986-03-07T02:15:00 * Date/Time End: 1986-03-08T00:45:00 * Elevation: -2275.0 m * Penetration: 163.8 m * Recovery: 176.14 m * Location: Canarias Sea * Campaign: Leg108 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 18 cores; 163.8 m cored; 0 m drilled; 107.5 % recovery
Size:
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