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Bender, Michael L (1983): Pore-water chemistry at DSDP Leg 70 Holes [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.816145, Supplement to: Bender, ML (1983): Pore-water chemistry, Sites 506 - 509, Deep Sea Drilling Project. In: Honnorez, J; Von Herzen, RP; et al. (eds.), Initial Reports of the Deep Sea Drilling Project (U.S. Govt. Printing Office), 70, 343-353, https://doi.org/10.2973/dsdp.proc.70.119.1983

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Abstract:
Geological and geophysical data collected during Deep Sea Drilling Project (DSDP) Leg 70 indicate that hydrothermal solutions are upwelling through the sediments of the mounds hydrothermal field (Sites 506, 507, and 509) and downwelling in the low heat-flow zone to the south (Site 508). Pore-water data are compatible with these conclusions. Pore waters at mounds sites are enriched in Ca and depleted in Mg relative to both seawater and Site 508 pore waters. These anomalies are believed to reflect prior reaction of the interstitial waters with basement rocks. The mounds solutions are also enriched in iron, which is probably hydrothermal and en route to forming nontronite. Concentrations of Si and NH3 in mounds pore water increase upcore as a result of the addition of dissolving biogenic debris to ascending hydrothermal solutions.
Some low heat-flow pore-water samples (Site 508) are enriched in Ca and depleted in Mg. These anomalies likely reflect the presence of pockets of hydrothermal solutions in areas otherwise dominated by downwelling bottom water.
Project(s):
Deep Sea Drilling Project (DSDP)
Coverage:
Median Latitude: 0.609935 * Median Longitude: -86.110367 * South-bound Latitude: 0.533300 * West-bound Longitude: -86.410000 * North-bound Latitude: 1.613200 * East-bound Longitude: -86.090000
Date/Time Start: 1979-11-15T00:00:00 * Date/Time End: 1979-11-29T00:00:00
Event(s):
70-506 * Latitude: 0.609800 * Longitude: -86.099800 * Date/Time: 1979-11-15T00:00:00 * Elevation: -2710.0 m * Penetration: 36.7 m * Recovery: 22.7 m * Location: North Pacific/MOUND * Campaign: Leg70 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 7 cores; 27.9 m cored; 8.8 m drilled; 81.5 % recovery
70-506B * Latitude: 0.610200 * Longitude: -86.091300 * Date/Time: 1979-11-15T00:00:00 * Elevation: -2711.0 m * Penetration: 20.7 m * Recovery: 20.2 m * Location: North Pacific/MOUND * Campaign: Leg70 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 6 cores; 20.7 m cored; 0 m drilled; 97.6 % recovery
70-506C * Latitude: 0.607700 * Longitude: -86.091300 * Date/Time: 1979-11-15T00:00:00 * Elevation: -2710.0 m * Penetration: 31.3 m * Recovery: 29.7 m * Location: North Pacific/MOUND * Campaign: Leg70 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 8 cores; 31.3 m cored; 0 m drilled; 95 % recovery
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
14 datasets

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Datasets listed in this publication series

  1. Bender, ML (1983): (Table 1) Pore-water chemistry of samples from DSDP Hole 70-506. https://doi.org/10.1594/PANGAEA.816131
  2. Bender, ML (1983): (Table 2) Pore-water chemistry of samples from DSDP Hole 70-506B. https://doi.org/10.1594/PANGAEA.816132
  3. Bender, ML (1983): (Table 3) Pore-water chemistry of samples from DSDP Hole 70-506C. https://doi.org/10.1594/PANGAEA.816133
  4. Bender, ML (1983): (Table 4) Pore-water chemistry of samples from DSDP Hole 70-506D. https://doi.org/10.1594/PANGAEA.816134
  5. Bender, ML (1983): (Table 5) Pore-water chemistry of samples from DSDP Hole 70-507D. https://doi.org/10.1594/PANGAEA.816135
  6. Bender, ML (1983): (Table 6) Si concentrations of DSDP Hole 70-507D pore waters squeezed at room temperature (21-22°C). https://doi.org/10.1594/PANGAEA.816136
  7. Bender, ML (1983): (Table 7) Pore-water chemistry of samples from DSDP Hole 70-507F. https://doi.org/10.1594/PANGAEA.816137
  8. Bender, ML (1983): (Table 8) Pore-water chemistry of samples from DSDP Hole 70-508. https://doi.org/10.1594/PANGAEA.816138
  9. Bender, ML (1983): (Table 9) Si concentrations of DSDP Hole 70-508 pore waters squeezed at room temperature (21-22°C). https://doi.org/10.1594/PANGAEA.816139
  10. Bender, ML (1983): (Table 10) Pore-water chemistry of samples from DSDP Hole 70-509. https://doi.org/10.1594/PANGAEA.816140
  11. Bender, ML (1983): (Table 11) Pore-water chemistry of samples from DSDP Hole 70-509B. https://doi.org/10.1594/PANGAEA.816141
  12. Bender, ML (1983): (Table 15) Organic C, organic N, and CaCO3 concentrations of sediments from DSDP Sites 70-506 to 70-509. https://doi.org/10.1594/PANGAEA.816144
  13. Bender, ML (1983): (Table 12) Pore-water Si, Ca and Mg for in situ samples at DSDP Holes 70-506 to 70-509. https://doi.org/10.1594/PANGAEA.816142
  14. Bender, ML (1983): (Table 13) Pore-water Si, Ca and Mg for in situ and centrifuge samples at DSDP Holes 70-506 to 70-509. https://doi.org/10.1594/PANGAEA.816143