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von Breymann, Marta T; Brumsack, Hans-Jürgen; Emeis, Kay-Christian (1992): Ba, Al and SO4 concentrations in sediments and pore fluid of ODP Leg 127/128 samples [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.777296, Supplement to: von Breymann, MT et al. (1992): Depositional and diagenetic behavior of barium in the Japan Sea. In: Pisciotto, KA; Ingle, JCJr.; von Breymann, MT; Barron, J; et al. (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 127/128(1), 651-665, https://doi.org/10.2973/odp.proc.sr.127128-1.168.1992

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Abstract:
The barium distribution in sediments and pore fluids from five sites drilled in the Japan Sea have been used to illustrate the geochemical behavior of this element as it pertains paleoproductivity reconstructions, diagenetic remobilization, and barite precipitation in authigenic fronts.
Sites where sulfate is depleted in the pore fluids also show high concentrations of dissolved barium, reflecting dissolution of biogenic barite. The high rate of sedimentation at Sites 798 and 799 results in a rapid sulfate depletion, which in turn leads to barite dissolution and reprecipitation in diagenetic fronts. The dissolved barium distribution at these sites has been used to quantify the rate of barite dissolution; we estimate a first-order rate constant for barite dissolution to be 2*10**-6/s at Site 799 and 2*10**-7/s at Site 798.
Authigenic barite has been documented in sediments from Site 799 at 323 meters below seafloor by scanning electron microscopy and X-ray fluorescence analysis. These results indicate barite precipitation in a diagenetic front near the zone of sulfate depletion by upward migration of dissolved barium and downward diffusion of sulfate. Barite precipitation has also been inferred at Sites 796 and 798 based on sedimentary and dissolved barium distributions.
Sulfate is not depleted in the pore fluids of Site 794. The lack of diagenetic remobilization of biogenic barium at this site preserves the high barium signal associated with the high-productivity sequences deposited during the late Miocene to Pliocene. Significantly, the organic carbon distribution does not indicate high accumulation rates during the periods of high opal and barium deposition. Instead, higher organic carbon accumulations are recorded in the Quaternary and middle Miocene sequences; intervals that are also characterized by deposition of siliciclastic turbidites. The presence of a terrestrial component in the organic carbon record renders barium a more useful indicator than organic carbon for paleoproductivity reconstructions in this marginal sea.
Project(s):
Ocean Drilling Program (ODP)
Coverage:
Median Latitude: 40.549136 * Median Longitude: 136.791241 * South-bound Latitude: 37.038500 * West-bound Longitude: 133.866500 * North-bound Latitude: 43.987000 * East-bound Longitude: 139.414000
Date/Time Start: 1989-06-26T15:15:00 * Date/Time End: 1989-10-12T03:40:00
Event(s):
127-794A * Latitude: 40.190000 * Longitude: 138.231000 * Date/Time Start: 1989-06-26T15:15:00 * Date/Time End: 1989-06-30T12:15:00 * Elevation: -2822.0 m * Penetration: 351.3 m * Recovery: 302.17 m * Location: Japan Sea * Campaign: Leg127 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 37 cores; 351.3 m cored; 0 m drilled; 86 % recovery
127-794B * Latitude: 40.190000 * Longitude: 138.231000 * Date/Time Start: 1989-06-30T12:15:00 * Date/Time End: 1989-07-03T20:30:00 * Elevation: -2822.0 m * Penetration: 549 m * Recovery: 87.4 m * Location: Japan Sea * Campaign: Leg127 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 27 cores; 249.2 m cored; 0 m drilled; 35.1 % recovery
127-795A * Latitude: 43.987000 * Longitude: 138.967000 * Date/Time Start: 1989-07-12T20:15:00 * Date/Time End: 1989-07-16T00:00:00 * Elevation: -3311.0 m * Penetration: 365.9 m * Recovery: 258.26 m * Location: Japan Sea * Campaign: Leg127 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 39 cores; 364.9 m cored; 0 m drilled; 70.8 % recovery
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
2 datasets

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Datasets listed in this publication series

  1. von Breymann, MT; Brumsack, H-J; Emeis, K-C (1992): (Table 2) Concentration of Ba and Al in sediments from ODP Leg 127/128 sites. https://doi.org/10.1594/PANGAEA.777294
  2. von Breymann, MT; Brumsack, H-J; Emeis, K-C (1992): (Table 3) Concentration of SO4 and Ba in pore fluids from ODP Leg 127/128 sites. https://doi.org/10.1594/PANGAEA.777295