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Titschack, Jürgen; Baum, Daniel; De Pol-Holz, Ricardo; López Correa, Matthias; Förster, Nina; Flögel, Sascha; Hebbeln, Dierk; Freiwald, André (2016): Aggradation and carbonate accumulation of sediment cores from cold-water coral reefs off Norway. PANGAEA, https://doi.org/10.1594/PANGAEA.867451, Supplement to: Titschack, J et al. (2015): Aggradation and carbonate accumulation of Holocene Norwegian cold-water coral reefs. Sedimentology, 62(7), 1873-1898, https://doi.org/10.1111/sed.12206

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Abstract:
Cold-water coral ecosystems present common carbonate factories along the Atlantic continental margins, where they can form large reef structures. There is increasing knowledge on their ecology, molecular genetics, environmental controls and threats available. However, information on their carbo-nate production and accumulation is still very limited, even though this information is essential for their evaluation as carbonate sinks. The aim of this study is to provide high-resolution reef aggradation and carbonate accumulation rates for Norwegian cold-water coral reefs from various settings (sunds, inner shelf and shelf margin). Furthermore, it introduces a new approach for the evaluation of the cold-water coral preservation within cold-water coral deposits by computed tomography analysis. This approach allows the differentiation of various kinds of cold-water coral deposits by their macrofossil clast size and orientation signature. The obtained results suggest that preservation of cold-water coral frameworks in living position is favoured by high reef aggradation rates, while preservation of coral rubble prevails by moderate aggradation rates. A high degree of macrofossil fragmentation indicates condensed intervals or unconformities. The observed aggradation rates with up to 1500 cm kyr**-1 exhibit the highest rates from cold-water coral reefs so far. Reef aggradation within the studied cores was restricted to the Early and Late Holocene. Available datings of Norwegian cold-water corals support this age pattern for other fjords while, on the shelf, cold-water coral ages are reported additionally from the early Middle Holocene. The obtained mean carbonate accumulation rates of up to 103 g cm**-2 kyr**-1 exceed previous estimates of cold-water coral reefs by a factor of two to three and by almost one order of magnitude to adjacent sedimentary environments (shelf, slope and deep sea). Only fjord basins locally exhibit carbonate accumulation rates in the range of the cold-water coral reefs. Furthermore, cold-water coral reef carbonate accumulation rates are in the range of tropical reef carbonate accumulation rates. These results clearly suggest the importance of cold-water coral reefs as local, maybe regional to global, carbonate sinks.
Coverage:
Median Latitude: 68.035855 * Median Longitude: 12.461823 * South-bound Latitude: 66.970667 * West-bound Longitude: 9.422500 * North-bound Latitude: 70.261333 * East-bound Longitude: 20.482000
Date/Time Start: 2005-07-17T14:05:00 * Date/Time End: 2007-06-16T13:30:00
Size:
21 datasets

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Datasets listed in this publication series

  1. Titschack, J; Baum, D; De Pol-Holz, R et al. (2016): (Table 3) AMS14C datings of cold-water corals from Røst reef gravity cores. https://doi.org/10.1594/PANGAEA.867389
  2. Titschack, J; Baum, D; De Pol-Holz, R et al. (2016): Aggradation rates and carbonate accumulation rates of sediment core POS325/1_359. https://doi.org/10.1594/PANGAEA.867384
  3. Titschack, J; Baum, D; De Pol-Holz, R et al. (2016): Aggradation rates and carbonate accumulation rates of sediment core POS325/2_472. https://doi.org/10.1594/PANGAEA.867385
  4. Titschack, J; Baum, D; De Pol-Holz, R et al. (2016): Aggradation rates and carbonate accumulation rates of sediment core PS70/035-2. https://doi.org/10.1594/PANGAEA.867386
  5. Titschack, J; Baum, D; De Pol-Holz, R et al. (2016): Aggradation rates and carbonate accumulation rates of sediment core PS70/035-3. https://doi.org/10.1594/PANGAEA.867387
  6. Titschack, J; Baum, D; De Pol-Holz, R et al. (2016): Clast angle distribution of sediment core POS325/1_359. https://doi.org/10.1594/PANGAEA.868110
  7. Titschack, J; Baum, D; De Pol-Holz, R et al. (2016): Clast angle distribution of sediment core POS325/2_472. https://doi.org/10.1594/PANGAEA.868111
  8. Titschack, J; Baum, D; De Pol-Holz, R et al. (2016): Clast angle distribution of sediment core PS70/035-2. https://doi.org/10.1594/PANGAEA.868112
  9. Titschack, J; Baum, D; De Pol-Holz, R et al. (2016): Clast angle distribution of sediment core PS70/035-3. https://doi.org/10.1594/PANGAEA.868113
  10. Titschack, J; Baum, D; De Pol-Holz, R et al. (2016): Clast size distribution of sediment core POS325/1_359. https://doi.org/10.1594/PANGAEA.868098
  11. Titschack, J; Baum, D; De Pol-Holz, R et al. (2016): Clast size distribution of sediment core POS325/2_472. https://doi.org/10.1594/PANGAEA.868099
  12. Titschack, J; Baum, D; De Pol-Holz, R et al. (2016): Clast size distribution of sediment core PS70/035-2. https://doi.org/10.1594/PANGAEA.868100
  13. Titschack, J; Baum, D; De Pol-Holz, R et al. (2016): Clast size distribution of sediment core PS70/035-3. https://doi.org/10.1594/PANGAEA.868101
  14. Titschack, J; Baum, D; De Pol-Holz, R et al. (2016): Volume per slice of sediment core POS325/1_359. https://doi.org/10.1594/PANGAEA.867399
  15. Titschack, J; Baum, D; De Pol-Holz, R et al. (2016): Volume per slice of sediment core POS325/2_472. https://doi.org/10.1594/PANGAEA.867400
  16. Titschack, J; Baum, D; De Pol-Holz, R et al. (2016): Volume per slice of sediment core PS70/035-2. https://doi.org/10.1594/PANGAEA.867401
  17. Titschack, J; Baum, D; De Pol-Holz, R et al. (2016): Volume per slice of sediment core PS70/035-3. https://doi.org/10.1594/PANGAEA.867402
  18. Titschack, J; Baum, D; De Pol-Holz, R et al. (2016): X-ray powder diffraction (XRD) measurements of sediment core POS325/1_359. https://doi.org/10.1594/PANGAEA.867447
  19. Titschack, J; Baum, D; De Pol-Holz, R et al. (2016): X-ray powder diffraction (XRD) measurements of sediment core POS325/2_472. https://doi.org/10.1594/PANGAEA.867448
  20. Titschack, J; Baum, D; De Pol-Holz, R et al. (2016): X-ray powder diffraction (XRD) measurements of sediment core PS70/035-2. https://doi.org/10.1594/PANGAEA.867449
  21. Titschack, J; Baum, D; De Pol-Holz, R et al. (2016): X-ray powder diffraction (XRD) measurements of sediment core PS70/035-3. https://doi.org/10.1594/PANGAEA.867450