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

Schlüter, Michael (1990): Organic carbon and opal in deep sea sediments of the southern and eastern Weddell Sea. PANGAEA, https://doi.org/10.1594/PANGAEA.712512, Supplement to: Schlüter, M (1990): Zur Frühdiagenese von organischem Kohlenstoff und Opal in Sedimenten des südlichen und östlichen Weddellmeeres. Geochemische Analyse und Modellierung (Early diagenesis of organic carbon and opal in sediments of the southern and eastern Weddell Sea. Geochemical analysis and modelling). Berichte zur Polarforschung = Reports on Polar Research, 73, 156 pp, https://doi.org/10.2312/BzP_0073_1990

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

RIS CitationBibTeX CitationShow MapGoogle Earth

Abstract:
During the ANT V14 (1986187) and ANT V113 (1987188) cruises of R.V. Polarstern sedirnents from the eastern, southern and central Weddell Sea were sarnpled with a boxcorer andlor a multicorer. The 24 sampling locations are distributed over the whole depth range, from shelf to pelagic environments. Porewater concentrations of aluminium, fluoride, manganese, nitrate, nitrite, oxygen and silicate, the pH and the alkalinity were measured. Of the sediment the opal, calcium carbonate and organic carbon content were quantified. The 210Pb-profile was measured for three sedirnent cores.
This investigation deals with the estimation of the amounts of opal and organic carbon (Corg) that are transported into the sediment, the regional distribution of these flux rates and the early diagenetic processes that control the preservation of organic carbon and opal in the sediment.
The flux and degradation rates of organic carbon were determined by modelling the rneasured oxygen and nitrate profiles. The highest flux and degradation rates were found in the eastern shelf sediments. Due to the high Corg-flux (>500 mmol C m**-2 a-1) in this area the oxic environment is restricted to the upper 3 cm of the sediment. In contrast to this, the oxic Zone in the pelagic sedirnents of the Weddell Sea has probably an extension of a few meters. The Corg-flux here, computed from the flux of nitrate throug h the sedimentlwater-interface, is less than 50 mmol C m**-2 a**-1. The flux of organic carbon into the sediments of the continental slope area is usually intermediate between the values computed for the shelf and pelagic sediments. Exceptions are the continental slope region north of Halley Bay. In these sediments the measured oxygen and nitrate profiles indicate a relatively high organic carbon flux. This could be a result of the recurrent development of a coastal polynia in this area. The bioturbation rate determined in this region by a 210Pb-profile is 0,019 cm**2 a**-1.
In the Weddell Sea the opal content at the sediment surface (0-1 cm depth) varies between 0,1 and 7 %-wt. These opal concentrations are rnuch lower than the opal contents determined for the sediments of the ROSS Sea by Ledford-Hoffmann et al. (1986 doi:10.1016/0016-7037(86)90263-2). Therefore the importance of the Antarctic shelf regions for the global silica cycle as stated by Ledford-Hoffmann et al. (1986) has to be reconsidered. The regional distribution of the opal content and the computed opal flux rates are correlated with the organic carbon flux rates.
The processes controlling the preservation of opal are discussed based On the measured aluminium and silicate concentrations in the Pore water and the opal content of the sediment.The depth distribution of the Si- and Al-concentration of the porewater indicates that the reconstitution of clay minerals takes place in the immediate vicinity of the sediment-water nterface. A characterization of these minerals e.g. the estimation of the Si/AI-ratio (Mackin and Aller, 1984 a doi:10.1016/0016-7037(84)90251-5, 1984 b doi:10.1016/0016-7037(84)90252-7) is not possible. With the program WATEQ2 saturation indices are computed to estimate which minerals could reconstitute. In this context the applicability of programs like WATEQ2 for computations of the species distribution and saturation indices in solutions with the ionic strength of sea water is investigated.
Keyword(s):
ms_opal
Coverage:
Median Latitude: -73.320793 * Median Longitude: -26.263336 * South-bound Latitude: -78.245160 * West-bound Longitude: -42.030333 * North-bound Latitude: -64.997833 * East-bound Longitude: -4.209000
Date/Time Start: 1987-01-12T14:03:00 * Date/Time End: 1988-02-29T15:11:00
Event(s):
PS1472-4 (PS10/672) * Latitude: -76.584500 * Longitude: -30.544833 * Date/Time: 1987-01-12T14:03:00 * Elevation: -258.0 m * Penetration: 0.1 m * Location: Barents Sea * Campaign: ANT-V/4 (PS10) * Basis: Polarstern * Device: van Veen Grab (VGRAB)
PS1473-1 (PS10/673) * Latitude: -76.634667 * Longitude: -30.629667 * Date/Time: 1987-01-13T09:48:00 * Elevation: -301.0 m * Penetration: 0.1 m * Location: Barents Sea * Campaign: ANT-V/4 (PS10) * Basis: Polarstern * Device: van Veen Grab (VGRAB)
PS1474-1 (PS10/675) * Latitude: -75.857667 * Longitude: -36.386000 * Date/Time: 1987-01-15T13:40:00 * Elevation: -583.0 m * Penetration: 0.37 m * Recovery: 0.37 m * Location: Filchner Trough * Campaign: ANT-V/4 (PS10) * Basis: Polarstern * Device: Giant box corer (GKG)
Size:
106 datasets

Download Data

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

Datasets listed in this publication series

<< PREV | 1 | 2 | NEXT >>

  1. Schlüter, M (1990): (Appendix 2.1) Formation factor of sediment core PS1590-1. https://doi.org/10.1594/PANGAEA.712254
  2. Schlüter, M (1990): (Appendix 2.1) Formation factor of sediment core PS1591-2. https://doi.org/10.1594/PANGAEA.712255
  3. Schlüter, M (1990): (Appendix 2.1) Formation factor of sediment core PS1595-2. https://doi.org/10.1594/PANGAEA.712256
  4. Schlüter, M (1990): (Appendix 2.1) Formation factor of sediment core PS1596-1. https://doi.org/10.1594/PANGAEA.712257
  5. Schlüter, M (1990): (Appendix 2.1) Formation factor of sediment core PS1599-1. https://doi.org/10.1594/PANGAEA.712258
  6. Schlüter, M (1990): (Appendix 2.1) Formation factor of sediment core PS1605-3. https://doi.org/10.1594/PANGAEA.712259
  7. Schlüter, M (1990): (Appendix 2.1) Formation factor of sediment core PS1606-1. https://doi.org/10.1594/PANGAEA.712260
  8. Schlüter, M (1990): (Appendix 2.1) Formation factor of sediment core PS1607-1. https://doi.org/10.1594/PANGAEA.712261
  9. Schlüter, M (1990): (Appendix 2.1) Formation factor of sediment core PS1609-2. https://doi.org/10.1594/PANGAEA.712262
  10. Schlüter, M (1990): (Appendix 2.1) Formation factor of sediment core PS1611-1. https://doi.org/10.1594/PANGAEA.712263
  11. Schlüter, M (1990): (Appendix 2.1) Formation factor of sediment core PS1613-2. https://doi.org/10.1594/PANGAEA.712264
  12. Schlüter, M (1990): (Appendix 2.1) Formation factor of sediment core PS1619-1. https://doi.org/10.1594/PANGAEA.712265
  13. Schlüter, M (1990): (Appendix 2.1) Formation factor of sediment core PS1620-2. https://doi.org/10.1594/PANGAEA.712266
  14. Schlüter, M (1990): (Appendix 2.1) Formation factor of sediment core PS1622-1. https://doi.org/10.1594/PANGAEA.712267
  15. Schlüter, M (1990): (Appendix 2.1) Formation factor of sediment core PS1622-2. https://doi.org/10.1594/PANGAEA.712360
  16. Schlüter, M (1990): (Appendix 2.1) Formation factor of sediment core PS1625-1. https://doi.org/10.1594/PANGAEA.712268
  17. Schlüter, M (1990): (Appendix 2.1) Formation factor of sediment core PS1626-1. https://doi.org/10.1594/PANGAEA.712269
  18. Schlüter, M (1990): (Appendix 2.1) Formation factor of sediment core PS1635-2. https://doi.org/10.1594/PANGAEA.712270
  19. Schlüter, M (1990): (Appendix 2.1) Formation factor of sediment core PS1636-1. https://doi.org/10.1594/PANGAEA.712238
  20. Schlüter, M (1990): (Appendix 2.1) Formation factor of sediment core PS1638-1. https://doi.org/10.1594/PANGAEA.712272
  21. Schlüter, M (1990): (Appendix 2.1) Formation factor of sediment core PS1639-1. https://doi.org/10.1594/PANGAEA.712273
  22. Schlüter, M (1990): (Appendix 2.1) Formation factor of sediment core PS1645-1. https://doi.org/10.1594/PANGAEA.712274
  23. Schlüter, M (1990): (Appendix 2.1) Geochemistry on sediment core PS1587-1. https://doi.org/10.1594/PANGAEA.51877
  24. Schlüter, M (1990): (Appendix 2.1) Geochemistry on sediment core PS1590-1. https://doi.org/10.1594/PANGAEA.712293
  25. Schlüter, M (1990): (Appendix 2.1) Geochemistry on sediment core PS1591-2. https://doi.org/10.1594/PANGAEA.712294
  26. Schlüter, M (1990): (Appendix 2.1) Geochemistry on sediment core PS1593-1. https://doi.org/10.1594/PANGAEA.712295
  27. Schlüter, M (1990): (Appendix 2.1) Geochemistry on sediment core PS1595-2. https://doi.org/10.1594/PANGAEA.712296
  28. Schlüter, M (1990): (Appendix 2.1) Geochemistry on sediment core PS1596-1. https://doi.org/10.1594/PANGAEA.712297
  29. Schlüter, M (1990): (Appendix 2.1) Geochemistry on sediment core PS1599-1. https://doi.org/10.1594/PANGAEA.712298
  30. Schlüter, M (1990): (Appendix 2.1) Geochemistry on sediment core PS1605-3. https://doi.org/10.1594/PANGAEA.712299
  31. Schlüter, M (1990): (Appendix 2.1) Geochemistry on sediment core PS1606-1. https://doi.org/10.1594/PANGAEA.712300
  32. Schlüter, M (1990): (Appendix 2.1) Geochemistry on sediment core PS1607-1. https://doi.org/10.1594/PANGAEA.712301
  33. Schlüter, M (1990): (Appendix 2.1) Geochemistry on sediment core PS1609-2. https://doi.org/10.1594/PANGAEA.712302
  34. Schlüter, M (1990): (Appendix 2.1) Geochemistry on sediment core PS1611-1. https://doi.org/10.1594/PANGAEA.712303
  35. Schlüter, M (1990): (Appendix 2.1) Geochemistry on sediment core PS1613-2. https://doi.org/10.1594/PANGAEA.712304
  36. Schlüter, M (1990): (Appendix 2.1) Geochemistry on sediment core PS1619-1. https://doi.org/10.1594/PANGAEA.712305
  37. Schlüter, M (1990): (Appendix 2.1) Geochemistry on sediment core PS1620-2. https://doi.org/10.1594/PANGAEA.712306
  38. Schlüter, M (1990): (Appendix 2.1) Geochemistry on sediment core PS1622-1. https://doi.org/10.1594/PANGAEA.712307
  39. Schlüter, M (1990): (Appendix 2.1) Geochemistry on sediment core PS1622-2. https://doi.org/10.1594/PANGAEA.712393
  40. Schlüter, M (1990): (Appendix 2.1) Geochemistry on sediment core PS1625-1. https://doi.org/10.1594/PANGAEA.712308
  41. Schlüter, M (1990): (Appendix 2.1) Geochemistry on sediment core PS1626-1. https://doi.org/10.1594/PANGAEA.712309
  42. Schlüter, M (1990): (Appendix 2.1) Geochemistry on sediment core PS1635-2. https://doi.org/10.1594/PANGAEA.712310
  43. Schlüter, M (1990): (Appendix 2.1) Geochemistry on sediment core PS1635-3. https://doi.org/10.1594/PANGAEA.712397
  44. Schlüter, M (1990): (Appendix 2.1) Geochemistry on sediment core PS1636-1. https://doi.org/10.1594/PANGAEA.712311
  45. Schlüter, M (1990): (Appendix 2.1) Geochemistry on sediment core PS1637-2. https://doi.org/10.1594/PANGAEA.712312
  46. Schlüter, M (1990): (Appendix 2.1) Geochemistry on sediment core PS1638-1. https://doi.org/10.1594/PANGAEA.712313
  47. Schlüter, M (1990): (Appendix 2.1) Geochemistry on sediment core PS1639-1. https://doi.org/10.1594/PANGAEA.712314
  48. Schlüter, M (1990): (Appendix 2.1) Geochemistry on sediment core PS1643-3. https://doi.org/10.1594/PANGAEA.712315
  49. Schlüter, M (1990): (Appendix 2.1) Geochemistry on sediment core PS1645-1. https://doi.org/10.1594/PANGAEA.712316
  50. Schlüter, M (1990): (Appendix 2.1) Oxygen content in porewater of sediment core PS1590-1. https://doi.org/10.1594/PANGAEA.712276
  51. Schlüter, M (1990): (Appendix 2.1) Oxygen content in porewater of sediment core PS1595-2. https://doi.org/10.1594/PANGAEA.712277
  52. Schlüter, M (1990): (Appendix 2.1) Oxygen content in porewater of sediment core PS1596-1. https://doi.org/10.1594/PANGAEA.712278
  53. Schlüter, M (1990): (Appendix 2.1) Oxygen content in porewater of sediment core PS1596-2. https://doi.org/10.1594/PANGAEA.712241
  54. Schlüter, M (1990): (Appendix 2.1) Oxygen content in porewater of sediment core PS1599-1. https://doi.org/10.1594/PANGAEA.712279
  55. Schlüter, M (1990): (Appendix 2.1) Oxygen content in porewater of sediment core PS1599-2. https://doi.org/10.1594/PANGAEA.712242
  56. Schlüter, M (1990): (Appendix 2.1) Oxygen content in porewater of sediment core PS1605-2. https://doi.org/10.1594/PANGAEA.712237
  57. Schlüter, M (1990): (Appendix 2.1) Oxygen content in porewater of sediment core PS1605-3. https://doi.org/10.1594/PANGAEA.712280
  58. Schlüter, M (1990): (Appendix 2.1) Oxygen content in porewater of sediment core PS1606-1. https://doi.org/10.1594/PANGAEA.712281
  59. Schlüter, M (1990): (Appendix 2.1) Oxygen content in porewater of sediment core PS1606-2. https://doi.org/10.1594/PANGAEA.712243
  60. Schlüter, M (1990): (Appendix 2.1) Oxygen content in porewater of sediment core PS1607-2. https://doi.org/10.1594/PANGAEA.712244
  61. Schlüter, M (1990): (Appendix 2.1) Oxygen content in porewater of sediment core PS1611-4. https://doi.org/10.1594/PANGAEA.712245
  62. Schlüter, M (1990): (Appendix 2.1) Oxygen content in porewater of sediment core PS1613-3. https://doi.org/10.1594/PANGAEA.712246
  63. Schlüter, M (1990): (Appendix 2.1) Oxygen content in porewater of sediment core PS1622-2. https://doi.org/10.1594/PANGAEA.712285
  64. Schlüter, M (1990): (Appendix 2.1) Oxygen content in porewater of sediment core PS1625-2. https://doi.org/10.1594/PANGAEA.712247
  65. Schlüter, M (1990): (Appendix 2.1) Oxygen content in porewater of sediment core PS1635-2. https://doi.org/10.1594/PANGAEA.712287
  66. Schlüter, M (1990): (Appendix 2.1) Oxygen content in porewater of sediment core PS1635-3. https://doi.org/10.1594/PANGAEA.712248
  67. Schlüter, M (1990): (Appendix 2.1) Oxygen content in porewater of sediment core PS1636-2. https://doi.org/10.1594/PANGAEA.712249
  68. Schlüter, M (1990): (Appendix 2.1) Oxygen content in porewater of sediment core PS1637-2. https://doi.org/10.1594/PANGAEA.712250
  69. Schlüter, M (1990): (Appendix 2.1) Oxygen content in porewater of sediment core PS1638-2. https://doi.org/10.1594/PANGAEA.712404
  70. Schlüter, M (1990): (Appendix 2.1) Oxygen content in porewater of sediment core PS1639-2. https://doi.org/10.1594/PANGAEA.712405
  71. Schlüter, M (1990): (Appendix 2.1) Oxygen content in porewater of sediment core PS1645-2. https://doi.org/10.1594/PANGAEA.712291
  72. Schlüter, M (1990): (Appendix 2.1) pH profile of sediment core PS1619-1. https://doi.org/10.1594/PANGAEA.712410
  73. Schlüter, M (1990): (Appendix 2.1) pH profile of sediment core PS1636-1. https://doi.org/10.1594/PANGAEA.712239
  74. Schlüter, M (1990): (Appendix 2.1) pH profile of sediment core PS1638-1. https://doi.org/10.1594/PANGAEA.712240
  75. Schlüter, M (1990): (Appendix 2.1) pH profile of sediment core PS1639-1. https://doi.org/10.1594/PANGAEA.712290
  76. Schlüter, M (1990): (Appendix 2.1) pH profile of sediment core PS1643-3. https://doi.org/10.1594/PANGAEA.51468
  77. Schlüter, M (1990): (Appendix 2.2) Calcium carbonate and organic carbon of sediment core PS1596-1. https://doi.org/10.1594/PANGAEA.51465
  78. Schlüter, M (1990): (Appendix 2.2) Calcium carbonate and organic carbon of sediment core PS1605-2. https://doi.org/10.1594/PANGAEA.712210
  79. Schlüter, M (1990): (Appendix 2.2) Calcium carbonate and organic carbon of sediment core PS1611-1. https://doi.org/10.1594/PANGAEA.712211
  80. Schlüter, M (1990): (Appendix 2.2) Calcium carbonate and organic carbon of sediment core PS1625-1. https://doi.org/10.1594/PANGAEA.712212
  81. Schlüter, M (1990): (Appendix 2.2) Calcium carbonate and organic carbon of sediment core PS1635-2. https://doi.org/10.1594/PANGAEA.712213
  82. Schlüter, M (1990): (Appendix 2.2) Calcium carbonate and organic carbon of sediment core PS1637-2. https://doi.org/10.1594/PANGAEA.712214
  83. Schlüter, M (1990): (Appendix 2.2) Calcium carbonate and organic carbon of sediment core PS1638-1. https://doi.org/10.1594/PANGAEA.712215
  84. Schlüter, M (1990): (Appendix 2.3) Lead210 of sediment core PS1596-2. https://doi.org/10.1594/PANGAEA.51467
  85. Schlüter, M (1990): (Appendix 2.3) Lead210 of sediment core PS1638-2. https://doi.org/10.1594/PANGAEA.712230
  86. Schlüter, M (1990): (Appendix 2.3) Lead210 of sediment core PS1638-3. https://doi.org/10.1594/PANGAEA.712231
  87. Schlüter, M (1990): (Appendix 2.4) Porosity of sediment core PS1587-1. https://doi.org/10.1594/PANGAEA.712232
  88. Schlüter, M (1990): (Appendix 2.4) Porosity of sediment core PS1605-2. https://doi.org/10.1594/PANGAEA.712233
  89. Schlüter, M (1990): (Appendix 2.4) Porosity of sediment core PS1635-3. https://doi.org/10.1594/PANGAEA.712234
  90. Schlüter, M (1990): (Appendix 2.4) Porosity of sediment core PS1638-2. https://doi.org/10.1594/PANGAEA.712235
  91. Schlüter, M (1990): (Appendix 2.4) Porosity of sediment core PS1645-2. https://doi.org/10.1594/PANGAEA.712236
  92. Schlüter, M (1990): (Appendix 2.5) Opal content in surface sediment during Polarstern cruise ANT-V/4. https://doi.org/10.1594/PANGAEA.51469
  93. Schlüter, M (1990): (Appendix 2.5) Opal content of sediment core PS1472-4. https://doi.org/10.1594/PANGAEA.51466
  94. Schlüter, M (1990): (Appendix 2.5) Opal content of sediment core PS1473-1. https://doi.org/10.1594/PANGAEA.712217
  95. Schlüter, M (1990): (Appendix 2.5) Opal content of sediment core PS1474-1. https://doi.org/10.1594/PANGAEA.712218
  96. Schlüter, M (1990): (Appendix 2.5) Opal content of sediment core PS1475-1. https://doi.org/10.1594/PANGAEA.712219
  97. Schlüter, M (1990): (Appendix 2.5) Opal content of sediment core PS1483-2. https://doi.org/10.1594/PANGAEA.712220
  98. Schlüter, M (1990): (Appendix 2.5) Opal content of sediment core PS1484-2. https://doi.org/10.1594/PANGAEA.712221
  99. Schlüter, M (1990): (Appendix 2.5) Opal content of sediment core PS1487-1. https://doi.org/10.1594/PANGAEA.712222
  100. Schlüter, M (1990): (Appendix 2.5) Opal content of sediment core PS1488-2. https://doi.org/10.1594/PANGAEA.712223

<< PREV | 1 | 2 | NEXT >>