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Faul, Kristina L; Delaney, Margaret Lois (2010): Geochemistry and accumulation rates of the early Paleogene in the Weddel Sea, Maud Rise and Kerguelen Plateau [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.831411, Supplement to: Faul, KL; Delaney, ML (2010): A comparison of early Paleogene export productivity and organic carbon burial flux for Maud Rise, Weddell Sea, and Kerguelen Plateau, south Indian Ocean. Paleoceanography, 25(3), PA3214, https://doi.org/10.1029/2009PA001916

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Abstract:
Marine biological productivity has been invoked as a possible climate driver during the early Paleogene through its potential influence on atmospheric carbon dioxide concentrations. However, the relationship of export productivity (the flux of organic carbon (C) from the surface ocean to the deep ocean) to organic C burial flux (the flux of organic C from the deep ocean that is buried in marine sediments) is not well understood. We examine the various components involved with atmosphere-to-ocean C transfer by reconstructing early Paleogene carbonate and silica production (using carbonate and silica mass accumulation rates (MARs)); export productivity (using biogenic barium (bio-Ba) MARs); organic C burial flux (using reactive phosphorus (P) MARs); redox conditions (using uranium and manganese contents); and the fraction of organic C buried relative to export productivity (using reactive P to bio-Ba ratios). Our investigations concentrate on Paleocene/Eocene sections of Sites 689/690 from Maud Rise and Site 738 from Kerguelen Plateau. In both regions, export productivity, organic C burial flux, and the fraction of organic C buried relative to export productivity decreased from the Paleocene/early Eocene to the middle Eocene. A shift is indicated from an early Paleogene two-gyre circulation in which nutrients were not efficiently recycled to the surface via upwelling in these regions, to a circulation more like the present day with efficient recycling of nutrients to the surface ocean. Export productivity was enhanced for Kerguelen Plateau relative to Maud Rise throughout the early Paleogene, possibly due to internal waves generated by the plateau regardless of gyre circulation.
Project(s):
Ocean Drilling Program (ODP)
Coverage:
Median Latitude: -64.113464 * Median Longitude: 30.068105 * South-bound Latitude: -65.161000 * West-bound Longitude: 1.204867 * North-bound Latitude: -62.709000 * East-bound Longitude: 82.787800
Date/Time Start: 1987-01-15T00:00:00 * Date/Time End: 1988-01-17T05:00:00
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. Faul, KL; Delaney, ML (2010): (Table S2b) Concentrations and accumulation rates of CaCO3 and biogenic barium for ODP Hole 113-689B. https://doi.org/10.1594/PANGAEA.831403
  2. Faul, KL; Delaney, ML (2010): (Table S2c) Metal concentrations for ODP Hole 113-689B. https://doi.org/10.1594/PANGAEA.831406
  3. Faul, KL; Delaney, ML (2010): (Table S2a) Concentrations of phosphorus components for ODP Hole 113-689B. https://doi.org/10.1594/PANGAEA.831400
  4. Faul, KL; Delaney, ML (2010): (Table S3b) Concentrations and accumulation rates of CaCO3 and biogenic barium for ODP Hole 113-690B. https://doi.org/10.1594/PANGAEA.831404
  5. Faul, KL; Delaney, ML (2010): (Table S3c) Metal concentrations for ODP Hole 113-690B. https://doi.org/10.1594/PANGAEA.831407
  6. Faul, KL; Delaney, ML (2010): (Table S3a) Concentrations of phosphorus components for ODP Hole 113-690B. https://doi.org/10.1594/PANGAEA.831399
  7. Faul, KL; Delaney, ML (2010): (Table S4b) Concentrations and accumulation rates of CaCO3 and biogenic barium for ODP Site 119-738. https://doi.org/10.1594/PANGAEA.831405
  8. Faul, KL; Delaney, ML (2010): (Table S4c) Metal concentrations for ODP Site 119-738. https://doi.org/10.1594/PANGAEA.831408
  9. Faul, KL; Delaney, ML (2010): (Table S4a) Concentrations of phosphorus components for ODP Site 119-738. https://doi.org/10.1594/PANGAEA.831402
  10. Faul, KL; Delaney, ML (2010): (Table S1) Age models and linear sedimentation rates of ODP Leg 113 and 119 sites. https://doi.org/10.1594/PANGAEA.831398