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Thiede, Jörn (1973): Distribution of planktic foraminifera in surface sediments and sedimentation rates of sediment cores from the Ibero-Moroccan continental rise and slope [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.548417, Supplement to: Thiede, J (1973): Sedimentation rates of planktonic and benthic foraminifera in sediments from the Atlantic continental margin of Portugal and Morocco. Meteor Forschungsergebnisse, Deutsche Forschungsgemeinschaft, Reihe C Geologie und Geophysik, Gebrüder Bornträger, Berlin, Stuttgart, C16, 1-18

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Abstract:
Cores from the Atlantic Ibero-Moroccan continental rise and slope contain fine-grained Late Pleistocene and Holocene sediments. These young sediments cover the continental margin in large lensformed litho- and biostratigraphically well-defined units. The total sedimentation rates range from 4 cm/ 1000 yrs. to 27 cm/1000 yrs. off Portugal and from 6 cm/1000 yrs. to 14 cm/1000 yrs. off Morocco.
Only a small proportion of these sediments usually consists of sand-sized particles (>0.063 mm) which are mostly dominated by foraminifera. Both planktonic and benthic foraminifera are much more abundant in Late Pleistocene and Holocene samples from the upper slope in comparison to those from the deeper slope and from the abyssal plains. Total sedimentation rates during cool and warm climatic stages are rather similar for both groups of foraminifera. For example, in Late Holocene sediments 7 x 10**3 benthic and 201 x 10**3 planktonic foraminifera (fraction 0.63 -0.20 mm) per 100 cm**2 and 1000 yrs. are preserved in the Tagus, 10-19 X 10**3 benthic and about 1.3 X 10**6 planktonic foraminifera are preserved in the Seine abyssal plain sediments. Values from the upper slope sediments are higher for benthic foraminifera by a factor of 60 off Portugal and 60 to 70 off Morocco. The values for planktonic ones differ by factors of 6-12 and 6 respectively. These numbers seem to reflect differences in production and preservation. Production rates of planktonic foraminifera generally seem to be somewhat higher during Holocene than during Late Pleistocene, and the rates of benthic foraminifera appear rather higher during Late Pleistocene than during Holocene.
Coverage:
Median Latitude: 37.520159 * Median Longitude: -9.843176 * South-bound Latitude: 33.432800 * West-bound Longitude: -10.853333 * North-bound Latitude: 37.916667 * East-bound Longitude: -9.133000
Date/Time Start: 1967-01-17T14:00:00 * Date/Time End: 1970-07-17T00:00:00
Event(s):
GIK10773-2 * Latitude: 37.703333 * Longitude: -9.473333 * Date/Time: 1970-03-17T00:00:00 * Elevation: -1071.0 m * Location: Atlantic Ocean * Campaign: M19 (Rossbreiten-Expedition 1970) * Basis: Meteor (1964) * Method/Device: Kasten corer (KAL)
GIK10774-1 * Latitude: 37.611667 * Longitude: -9.283333 * Date/Time: 1970-07-17T00:00:00 * Elevation: -600.0 m * Location: Atlantic Ocean * Campaign: M19 (Rossbreiten-Expedition 1970) * Basis: Meteor (1964) * Method/Device: Kasten corer (KAL)
M8_004-2 (M8004B) * Latitude: 37.916000 * Longitude: -10.853000 * Date/Time Start: 1967-01-17T14:00:00 * Date/Time End: 1967-01-18T02:06:00 * Elevation: -4979.0 m * Recovery: 1.41 m * Location: South Atlantic Ocean * Campaign: M8 (Atlantische Kuppenfahrten 1967/1-3) * Basis: Meteor (1964) * Method/Device: Kasten corer (KAL)
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
10 datasets

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Datasets listed in this publication series

  1. Thiede, J (1973): Definition of time intervals and core levels of sediment core GIK10773-2, Atlantic continental margin of Portugal and Morocco (Table 2). https://doi.org/10.1594/PANGAEA.510713
  2. Thiede, J (1973): Definition of time intervals and core levels of sediment core GIK10774-1, Atlantic continental margin of Portugal and Morocco (Table 2). https://doi.org/10.1594/PANGAEA.510714
  3. Thiede, J (1973): Definition of time intervals and core levels of sediment core M8_004-1, Atlantic continental margin of Portugal and Morocco (Table 2). https://doi.org/10.1594/PANGAEA.510715
  4. Thiede, J (1973): Definition of time intervals and core levels of sediment core M8_006-2, Atlantic continental margin of Portugal and Morocco (Table 2). https://doi.org/10.1594/PANGAEA.510716
  5. Thiede, J (1973): Definition of time intervals and core levels of sediment core M8_007-2, Atlantic continental margin of Portugal and Morocco (Table 2). https://doi.org/10.1594/PANGAEA.510717
  6. Thiede, J (1973): Definition of time intervals and core levels of sediment core M8_008-3, Atlantic continental margin of Portugal and Morocco (Table 2). https://doi.org/10.1594/PANGAEA.510718
  7. Thiede, J (1973): Definition of time intervals and core levels of sediment core M8_057-2, Atlantic continental margin of Portugal and Morocco (Table 2). https://doi.org/10.1594/PANGAEA.510719
  8. Thiede, J (1973): Definition of time intervals and core levels of sediment core M8_058-2, Atlantic continental margin of Portugal and Morocco (Table 2). https://doi.org/10.1594/PANGAEA.510720
  9. Thiede, J (1973): Definition of time intervals and core levels of sediment core M8_061-1, Atlantic continental margin of Portugal and Morocco (Table 2). https://doi.org/10.1594/PANGAEA.510721
  10. Thiede, J (1973): Planktic foraminifera of surface sediments off Portugal and Morocco (Table 4). https://doi.org/10.1594/PANGAEA.510743