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Schwarz, Johanna; Rendle-Bühring, Rebecca (2005): Sedimentology and faunal compositions of surface sediments from the southern Florida Strait [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.738225, Supplement to: Schwarz, J; Rendle-Bühring, R (2005): Controls on modern carbonate preservation in the southern Florida Straits. Sedimentary Geology, 175, 153-167, https://doi.org/10.1016/j.sedgeo.2004.12.024

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Abstract:
The water masses in the Florida Straits and Bahamas region are important sources for the Northern Atlantic surface ocean circulation. In this study, we analyse carbonate preservation in surface sediments located above the chemical lysocline in the Florida Straits and Bahamas region and discuss possible reasons for supralysoclinal dissolution. Calcite dissolution proxies such as the variation of the foraminiferal assemblage, Fragmentation Index, Benthic Foraminifera Index, and Resistance Index displayed a good preservation in both areas. The pteropod species Limacina inflata showed very good preservation in sediments of inter-platform channels from the Great Bahama Bank (Providence Channel, Exuma Sound) above the aragonite lysocline. Supralysoclinal aragonite dissolution, however, was observed at two water depth levels (800-1000 m and below 1500 m) in the Florida Straits. Our observations suggest that the supralysoclinal dissolution in the Florida Straits is due to the degradation of organic material. The presence of Antarctic Intermediate Water (AAIW) may be a contributing factor for the significant aragonite dissolution in 800-1000 m. The comparison of modern preservation patterns of the surface sediments with hydrographical measurements shows that the L. inflata Dissolution Index (LDX) might be an adequate proxy to reconstruct paleo-water mass conditions in an area which is highly saturated with respect to calcium carbonate.
Project(s):
Center for Marine Environmental Sciences (MARUM)
Coverage:
Median Latitude: 24.266747 * Median Longitude: -80.328610 * South-bound Latitude: 22.390000 * West-bound Longitude: -83.990000 * North-bound Latitude: 26.260000 * East-bound Longitude: -74.317000
Date/Time Start: 1974-03-15T00:00:00 * Date/Time End: 1974-03-15T00:00:00
Event(s):
GS7603-7 (GS-7603-7) * Latitude: 23.450000 * Longitude: -81.940000 * Elevation: -1620.0 m * Campaign: GS7603 * Basis: Gilliss * Method/Device: Piston corer (PC)
GS7603-8 (GS-7603-8) * Latitude: 23.750000 * Longitude: -81.880000 * Elevation: -1550.0 m * Campaign: GS7603 * Basis: Gilliss * Method/Device: Piston corer (PC)
GS7603-9 (GS-7603-9) * Latitude: 24.180000 * Longitude: -80.560000 * Elevation: -1040.0 m * Campaign: GS7603 * Basis: Gilliss * Method/Device: Piston corer (PC)
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
32 datasets

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Datasets listed in this publication series

  1. Schwarz, J; Rendle-Bühring, R (2007): Grain size analysis of surface sediments from the southern Florida Straits. https://doi.org/10.1594/PANGAEA.633684
  2. Schwarz, J; Rendle-Bühring, R (2007): Faunal assemblage of sediment core GS7603-7. https://doi.org/10.1594/PANGAEA.646254
  3. Schwarz, J; Rendle-Bühring, R (2007): Faunal assemblage of sediment core GS7603-8. https://doi.org/10.1594/PANGAEA.646255
  4. Schwarz, J; Rendle-Bühring, R (2007): Faunal assemblage of sediment core GS7603-9. https://doi.org/10.1594/PANGAEA.646256
  5. Schwarz, J; Rendle-Bühring, R (2007): Faunal assemblage of sediment core GS7603-10. https://doi.org/10.1594/PANGAEA.646249
  6. Schwarz, J; Rendle-Bühring, R (2007): Faunal assemblage of sediment core GS7603-11. https://doi.org/10.1594/PANGAEA.646250
  7. Schwarz, J; Rendle-Bühring, R (2007): Faunal assemblage of sediment core GS7603-12. https://doi.org/10.1594/PANGAEA.646251
  8. Schwarz, J; Rendle-Bühring, R (2007): Faunal assemblage of sediment core GS7603-13. https://doi.org/10.1594/PANGAEA.646252
  9. Schwarz, J; Rendle-Bühring, R (2007): Faunal assemblage of sediment core GS7603-14. https://doi.org/10.1594/PANGAEA.646253
  10. Schwarz, J; Rendle-Bühring, R (2007): Census counts of the fraction >150 µm of surface samples from the southern Florida Straits. https://doi.org/10.1594/PANGAEA.633718
  11. Schwarz, J; Rendle-Bühring, R (2007): Limacina inflata dissolution index (LDX) of surface sediments from the southern Florida Straits, sample set 1. https://doi.org/10.1594/PANGAEA.633742
  12. Schwarz, J; Rendle-Bühring, R (2007): Limacina inflata dissolution index (LDX) of surface sediments from the southern Florida Straits, sample set 2. https://doi.org/10.1594/PANGAEA.633743
  13. Schwarz, J; Rendle-Bühring, R (2007): Limacina inflata dissolution index (LDX) of surface sediments from the southern Florida Straits, sample set 5. https://doi.org/10.1594/PANGAEA.633744
  14. Schwarz, J; Rendle-Bühring, R (2007): Total and organic carbon contents and mineralogy of fine fraction (<63 µm) in surface sediments from the southern Florida Straits, sample set 1. https://doi.org/10.1594/PANGAEA.633720
  15. Schwarz, J; Rendle-Bühring, R (2007): Total and organic carbon contents and mineralogy of fine fraction (<63 µm) in surface sediments from the southern Florida Straits and the Bahama Platform, sample set 2. https://doi.org/10.1594/PANGAEA.633726
  16. Schwarz, J; Rendle-Bühring, R (2007): Total and organic carbon contents and mineralogy of fine fraction (<63 µm) in surface sediments from the southern Florida Straits and the Bahama Platform, sample set 5. https://doi.org/10.1594/PANGAEA.633728
  17. Schwarz, J; Rendle-Bühring, R (2007): Total and organic carbon contents and mineralogy of bulk sediment in surface sediments from the southern Florida Straits, sample set 1. https://doi.org/10.1594/PANGAEA.633721
  18. Schwarz, J; Rendle-Bühring, R (2007): Total and organic carbon contents and mineralogy of bulk sediment in surface sediments from the southern Florida Straits and the Bahama Platform, sample set 2. https://doi.org/10.1594/PANGAEA.633727
  19. Schwarz, J; Rendle-Bühring, R (2007): Total and organic carbon contents and mineralogy of bulk sediment in surface sediments from the southern Florida Straits and the Bahama Platform, sample set 5. https://doi.org/10.1594/PANGAEA.633729
  20. Schwarz, J; Rendle-Bühring, R (2007): Fine fraction (<63 µm) x-ray diffraction analyses (peak area) of surface sediment samples from the southern Florida Straits, sample set 1. https://doi.org/10.1594/PANGAEA.648673
  21. Schwarz, J; Rendle-Bühring, R (2007): Fine fraction (<63 µm) x-ray diffraction analyses (peak area) of surface sediment samples from the southern Florida Straits and the Bahama Platform, sample set 2. https://doi.org/10.1594/PANGAEA.648703
  22. Schwarz, J; Rendle-Bühring, R (2007): Fine fraction (<63 µm) x-ray diffraction analyses (peak area) of surface sediment samples from the southern Florida Straits and the Bahama Platform, sample set 5. https://doi.org/10.1594/PANGAEA.648707
  23. Schwarz, J; Rendle-Bühring, R (2007): Fine fraction (<63 µm) x-ray diffraction analyses (weight percentage) of surface sediment samples from the southern Florida Straits sample set 1. https://doi.org/10.1594/PANGAEA.648709
  24. Schwarz, J; Rendle-Bühring, R (2007): Fine fraction (<63 µm) x-ray diffraction analyses (weight percentage) of surface sediment samples from the southern Florida Straits and the Bahama Platform, sample set 2. https://doi.org/10.1594/PANGAEA.648712
  25. Schwarz, J; Rendle-Bühring, R (2007): Fine fraction (<63 µm) x-ray diffraction analyses (weight percentage) of surface sediment samples from the southern Florida Straits and the Bahama Platform, sample set 5. https://doi.org/10.1594/PANGAEA.648713
  26. Schwarz, J; Rendle-Bühring, R (2007): Faunal assemblage of sediment core TR149-31. https://doi.org/10.1594/PANGAEA.646257
  27. Schwarz, J; Rendle-Bühring, R (2007): Faunal assemblage of sediment core TR149-32. https://doi.org/10.1594/PANGAEA.646258
  28. Schwarz, J; Rendle-Bühring, R (2007): Faunal assemblage of sediment core TR149-34. https://doi.org/10.1594/PANGAEA.646259
  29. Schwarz, J; Rendle-Bühring, R (2007): Faunal assemblage of sediment core TR149-35. https://doi.org/10.1594/PANGAEA.646260
  30. Schwarz, J; Rendle-Bühring, R (2007): Faunal assemblage of sediment core TR149-36. https://doi.org/10.1594/PANGAEA.646261
  31. Schwarz, J; Rendle-Bühring, R (2007): Faunal assemblage of sediment core TR149-37. https://doi.org/10.1594/PANGAEA.646262
  32. Schwarz, J; Rendle-Bühring, R (2007): Faunal assemblage of sediment core TR149-38b. https://doi.org/10.1594/PANGAEA.646263