Bonn, Wolfgang J (2009): Sedimentology on Quaternary depoits from the Weddell Sea continental slope [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.729792, Supplement to: Bonn, WJ (1995): Biogenopal und biogenes Barium als Indikatoren für spätquartäre Produktivitätsänderungen am antarktischen Kontinentalhang, atlantischer Sektor (Biogenic opal and barium: Indicators for late Quarternary changes in productivity at the Antarctic continental margin, Atlantic Sector). Berichte zur Polarforschung = Reports on Polar Research, 180, 186 pp, https://doi.org/10.2312/BzP_0180_1995
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Abstract:
Sedimentological, geochemical (in particular biogenic content) and physical properties from the Weddell, Lazarev and Cosmonaut seas along the Antarctic continental margin were analysed in order to reconstruct the late Quaternary productivity and sedimentary processes of this region. Seven undisturbed sediment cores were chosen. The sediments represent a depositional period from 400,000 years to the recent time.
The late Quaternary climatic changes influence changes in the paleoenvironmental and the geological conditions, directly forced by the behaviour of the Antarctic ice sheet. All investigated cores are positioned within the oscillating ice sheet area and reflect the influence of the ice sheet in response to the climatic cycles.
The organic carbon, carbonate, biogenic opal, and barium contents were measured, andlor calculated, together with the determination by XRD of the terrigenous components such as quartz and plagioclase (expressed as relative to corundum standard). The contents of organic carbon and carbonate in general are very low. The results provide an indication that organic carbon content is a preservation signal and not a productivity signal. Carbonate is not correlated with biogenic opal and biogenic barium.
Profiles of biogenic opal and barium were measured within the sediment cores providing a qualitative and quantitative tool to estimate changes in paleoproductivity over the investigated time. Generally, good correlations between the barium and opal records of the sediment cores indicate that dissolution of opal in the water column and the sediment does not obscure the surface productivity signal. Therefore, opal can be used in combination with other proxies for paleoproductivity discussions in this area. Maximum paleoproductivity rates (PPmax) during peak warm stages reach values between 82-345 gC/m2/a and maximum export productivity rates (Pnew, max) between 14-177 gC/m2/a, that are representative of high-productivity areas. They are drastically reduced during glacial times (PPmax = 14-107 gC/m2/a, Pnew, max = 1-25 gC/m2/a). The results allow the development of a model for paleoproductivity processes for the last 400,000 years at the Antarctic continental margin of the Atlantic sector. Following the estimated productivity rates it can be concluded that during the last 400,000 years, North Atlantic Deep Water (NADW) heat flux into the southernmost South Atlantic Ocean was restricted to interglacial periods with stronger input of NADW driven deep water circulation during interglacial stages 1, 5 (5.5) and 7.
Related to:
Bonn, Wolfgang J; Fütterer, Dieter K; Grobe, Hannes (1994): Quaternary sedimentation at the Antarctic continental margin. Terra Antartica, 1(2), 319-320, hdl:10013/epic.10991.d001
Bonn, Wolfgang J; Gingele, Franz; Grobe, Hannes; Mackensen, Andreas; Fütterer, Dieter K (1998): Palaeoproductivity at the Antarctic continental margin: opal and barium records for the last 400 ka. Palaeogeography, Palaeoclimatology, Palaeoecology, 139(3-4), 195-211, https://doi.org/10.1016/S0031-0182(97)00144-2
Project(s):
Funding:
Coverage:
Median Latitude: -68.870024 * Median Longitude: 3.942645 * South-bound Latitude: -69.773380 * West-bound Longitude: -43.335500 * North-bound Latitude: -62.849500 * East-bound Longitude: 37.480500
Date/Time Start: 1987-12-26T13:05:00 * Date/Time End: 1991-03-06T18:15:00
Event(s):
PS1575-1 (PS12/248) * Latitude: -62.849500 * Longitude: -43.335500 * Date/Time: 1987-12-26T13:05:00 * Elevation: -3461.0 m * Penetration: 10.7 m * Recovery: 8.51 m * Location: South Orkney * Campaign: ANT-VI/3 (PS12) * Basis: Polarstern * Method/Device: Gravity corer (Kiel type) (SL) * Comment: 9 core sections: 0-0.57, 0.57-1.57, 1.57-2.57, 2.57-3.57, 3.57-4.51, 4.51-5.51, 5.51-6.51, 6.51-7.51, 7.51-8.51 m
PS1648-1 (PS12/536) * Latitude: -69.740000 * Longitude: -6.524660 * Date/Time: 1988-03-01T17:26:00 * Elevation: -2529.0 m * Penetration: 10.8 m * Recovery: 8.63 m * Location: Atka Bay * Campaign: ANT-VI/3 (PS12) * Basis: Polarstern * Method/Device: Gravity corer (Kiel type) (SL) * Comment: 9 core sections: 0-0.63, 0.63-1.63, 1.63-2.63, 2.63-3.63, 3.63-4.63, 4.63-5.63, 5.63-6.63, 6.63-7.63, 7.63-8.63 m
PS1821-6 (PS16/534) * Latitude: -67.065330 * Longitude: 37.480500 * Date/Time: 1990-04-03T03:19:00 * Elevation: -4027.0 m * Penetration: 18 m * Recovery: 15.82 m * Location: Lazarev Sea * Campaign: ANT-VIII/6 (PS16) * Basis: Polarstern * Method/Device: Gravity corer (Kiel type) (SL) * Comment: 16 core sections: 0-0.81, 0.81-1.81, 1.81-2.81, 2.81-3.81, 3.81-4.81, 4.81-5.81, 5.81-6.81, 6.81-7.81, 7.81-8.77, 8.77-9.77, 9.77-10.77, 10.77-11.77, 11.77-12.77, 12.77-13.82, 13.82-14.82, 14.82-15.82 m
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
44 datasets
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Datasets listed in this publication series
- Bonn, WJ (1996): Geochemistry of sediment core PS1575-1. https://doi.org/10.1594/PANGAEA.50293
- Bonn, WJ (2004): Sedimentology of core PS1648-1. https://doi.org/10.1594/PANGAEA.138310
- Bonn, WJ (2004): Wet bulk density of sediment core PS1648-1. https://doi.org/10.1594/PANGAEA.138298
- Bonn, WJ (1998): Geochemistry of sediment core PS1648-1. https://doi.org/10.1594/PANGAEA.50294
- Bonn, WJ (2004): Sedimentology of core PS1821-6. https://doi.org/10.1594/PANGAEA.138311
- Bonn, WJ (1997): Geochemistry of sediment core PS1821-6. https://doi.org/10.1594/PANGAEA.51859
- Bonn, WJ (2004): Wet bulk density of sediment core PS1824-1. https://doi.org/10.1594/PANGAEA.138299
- Bonn, WJ (2004): Bulk sedimentological parameters of core PS2037-3. https://doi.org/10.1594/PANGAEA.138407
- Bonn, WJ (2004): Sedimentology of core PS2037-3. https://doi.org/10.1594/PANGAEA.138312
- Bonn, WJ (1998): Wet bulk density of sediment core PS2038-2. https://doi.org/10.1594/PANGAEA.138300
- Bonn, WJ (2004): Bulk sedimentological parameters of core PS2039-1. https://doi.org/10.1594/PANGAEA.138409
- Bonn, WJ (2004): Sedimentology of core PS2039-1. https://doi.org/10.1594/PANGAEA.138314
- Bonn, WJ (2004): Wet bulk density of sediment core PS2039-1. https://doi.org/10.1594/PANGAEA.138301
- Bonn, WJ (2004): Bulk sedimentological parameters of core PS2040-2. https://doi.org/10.1594/PANGAEA.138410
- Bonn, WJ (1997): Sedimentology and stable isotopes on core PS2040-2. https://doi.org/10.1594/PANGAEA.51878
- Bonn, WJ (2004): Sedimentology of core PS2040-2. https://doi.org/10.1594/PANGAEA.138315
- Bonn, WJ (2004): Wet bulk density of sediment core PS2040-2. https://doi.org/10.1594/PANGAEA.138302
- Bonn, WJ (2004): Bulk sedimentological parameters of core PS2044-1. https://doi.org/10.1594/PANGAEA.138411
- Bonn, WJ (2004): Sedimentology of core PS2044-1. https://doi.org/10.1594/PANGAEA.138316
- Bonn, WJ (1997): Coarse fraction analysis and stable isotopes from sediment core PS2045-3. https://doi.org/10.1594/PANGAEA.51879
- Bonn, WJ (2004): Bulk sedimentological parameters of core PS2045-3. https://doi.org/10.1594/PANGAEA.138412
- Bonn, WJ (2004): Sedimentology of core PS2045-3. https://doi.org/10.1594/PANGAEA.138317
- Bonn, WJ (2004): Wet bulk density of sediment core PS2045-3. https://doi.org/10.1594/PANGAEA.138303
- Bonn, WJ (1997): Clay mineralogy of sediment core PS2046-1. https://doi.org/10.1594/PANGAEA.51880
- Bonn, WJ (2004): Bulk sedimentological parameters of core PS2046-1. https://doi.org/10.1594/PANGAEA.138413
- Bonn, WJ (2004): Sedimentology of core PS2046-1. https://doi.org/10.1594/PANGAEA.138318
- Bonn, WJ (2004): Wet bulk density of sediment core PS2046-1. https://doi.org/10.1594/PANGAEA.138304
- Bonn, WJ (1997): Clay mineralogy of sediment core PS2047-3. https://doi.org/10.1594/PANGAEA.51881
- Bonn, WJ (2004): Bulk sedimentological parameters of core PS2047-3. https://doi.org/10.1594/PANGAEA.138414
- Bonn, WJ (2004): Sedimentology of core PS2047-3. https://doi.org/10.1594/PANGAEA.138319
- Bonn, WJ (1997): Clay mineralogy and stable isotopes on core PS2049-4. https://doi.org/10.1594/PANGAEA.51882
- Bonn, WJ (2004): Bulk sedimentological parameters of core PS2049-4. https://doi.org/10.1594/PANGAEA.138415
- Bonn, WJ (2004): Sedimentology of core PS2049-4. https://doi.org/10.1594/PANGAEA.138320
- Bonn, WJ (2004): Bulk sedimentological parameters of core PS2050-1. https://doi.org/10.1594/PANGAEA.138416
- Bonn, WJ (1997): Sedimentology on core PS2050-1. https://doi.org/10.1594/PANGAEA.51883
- Bonn, WJ (2004): Sedimentology of core PS2050-1. https://doi.org/10.1594/PANGAEA.138321
- Bonn, WJ (2004): Bulk sedimentological parameters of core PS2055-2. https://doi.org/10.1594/PANGAEA.138417
- Bonn, WJ (2004): Sedimentology of core PS2055-2. https://doi.org/10.1594/PANGAEA.138322
- Bonn, WJ (1997): Stable isotopes on foraminifer N. pachyderma in sediment core PS2055-2. https://doi.org/10.1594/PANGAEA.51884
- Bonn, WJ (2004): Wet bulk density of sediment core PS2055-2. https://doi.org/10.1594/PANGAEA.138305
- Bonn, WJ (2004): Bulk sedimentological parameters of core PS2056-1. https://doi.org/10.1594/PANGAEA.138418
- Bonn, WJ (1997): Sedimentology on core PS2056-1. https://doi.org/10.1594/PANGAEA.51885
- Bonn, WJ (2004): Sedimentology of core PS2056-1. https://doi.org/10.1594/PANGAEA.138323
- Bonn, WJ (2004): Wet bulk density of sediment core PS2056-1. https://doi.org/10.1594/PANGAEA.138306