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Sano, Yuji; Wakita, Hiroshi (1987): 3He/4He and 4He/20Ne ratios in pore water and gas in Pacific deep-sea sediments [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.705058, Supplement to: Sano, Y; Wakita, H (1987): Helium isotopes and heat flow on the ocean floor. Chemical Geology: Isotope Geoscience section, 66(3-4), 217-226, https://doi.org/10.1016/0168-9622(87)90043-1

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Abstract:
We have measured the 3He/3He and 3He/20 Ne ratios of thirty-nine pore water and gas samples in deep-sea sediments collected at twelve sites on the Pacific Ocean bottom during the cruises of Deep Sea Drilling Project Legs 87, 89, 90 and 92. The 3He/4He and 4He/20Ne ratios vary from 0.000000215 to 0.00000165 and from 0.29 to 20, respectively. He in the sample is composed of four components: (1) atmospheric He dissolved in seawater; (2) atmospheric He with mantle-derived He in Pacific bottom water; (3) in situ radiogenic He in the sediment; and (4) crustal He in the basement rock. Assuming that the 20Ne contents are constant with the value of seawater, the depth variations in the 4He/20Ne ratios at five Sites, 583D, 594, 597A, 598A and 504B, may provide useful information on 4He flux at the ocean bottom. The estimated 4He fluxes vary from 2000 to 40000 atoms cm**-2 s**-1 and are one to three orders of magnitude less than those calculated from the excess He in deep ocean water. An overall similarity between the geographical distribution of the 3He/4He ratios and heat flow data is found in the study area, between the East Pacific Rise across the Pacific Ocean and the Japanese Islands. The tendency is well explained by a conventional sea-floor spreading model.
Project(s):
Deep Sea Drilling Project (DSDP)
Coverage:
Median Latitude: -5.670009 * Median Longitude: -164.987936 * South-bound Latitude: -45.523500 * West-bound Longitude: 133.855000 * North-bound Latitude: 40.466700 * East-bound Longitude: -83.730300
Date/Time Start: 1982-07-08T00:00:00 * Date/Time End: 1986-10-16T18:15:00
Event(s):
87-583D * Latitude: 31.829300 * Longitude: 133.859000 * Date/Time: 1982-07-08T00:00:00 * Elevation: -4676.0 m * Penetration: 326.6 m * Recovery: 69.8 m * Location: North Pacific Ocean * Campaign: Leg87 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 28 cores; 270.2 m cored; 56.4 m drilled; 25.9 % recovery
87-583F * Latitude: 31.835000 * Longitude: 133.855000 * Date/Time: 1982-07-08T00:00:00 * Elevation: -4629.0 m * Penetration: 439.7 m * Recovery: 46.8 m * Location: North Pacific Ocean * Campaign: Leg87 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 26 cores; 250.6 m cored; 38.7 m drilled; 18.7 % recovery
87-584 * Latitude: 40.466700 * Longitude: 143.951700 * Date/Time: 1982-08-05T00:00:00 * Elevation: -4078.0 m * Penetration: 941 m * Recovery: 478.4 m * Location: North Pacific Ocean * Campaign: Leg87 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 98 cores; 941 m cored; 0 m drilled; 50.8 % recovery
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
11 datasets

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Datasets listed in this publication series

  1. Sano, Y; Wakita, H (1987): (Table 1) 3He/4He and 4He/20Ne ratios in pore water and gas in deep-sea sediments at DSDP Site 87-583D. https://doi.org/10.1594/PANGAEA.705047
  2. Sano, Y; Wakita, H (1987): (Table 1) 3He/4He and 4He/20Ne ratios in pore water and gas in deep-sea sediments at DSDP Site 87-583F. https://doi.org/10.1594/PANGAEA.705048
  3. Sano, Y; Wakita, H (1987): (Table 1) 3He/4He and 4He/20Ne ratios in pore water and gas in deep-sea sediments at DSDP Site 87-584. https://doi.org/10.1594/PANGAEA.705049
  4. Sano, Y; Wakita, H (1987): (Table 1) 3He/4He and 4He/20Ne ratios in pore water and gas in deep-sea sediments at DSDP Site 89-586. https://doi.org/10.1594/PANGAEA.705050
  5. Sano, Y; Wakita, H (1987): (Table 1) 3He/4He and 4He/20Ne ratios in pore water and gas in deep-sea sediments at DSDP Site 90-594. https://doi.org/10.1594/PANGAEA.705051
  6. Sano, Y; Wakita, H (1987): (Table 1) 3He/4He and 4He/20Ne ratios in pore water and gas in deep-sea sediments at DSDP Site 90-594B. https://doi.org/10.1594/PANGAEA.705052
  7. Sano, Y; Wakita, H (1987): (Table 1) 3He/4He and 4He/20Ne ratios in pore water and gas in deep-sea sediments at DSDP Site 92-597A. https://doi.org/10.1594/PANGAEA.705053
  8. Sano, Y; Wakita, H (1987): (Table 1) 3He/4He and 4He/20Ne ratios in pore water and gas in deep-sea sediments at DSDP Site 92-598A. https://doi.org/10.1594/PANGAEA.705054
  9. Sano, Y; Wakita, H (1987): (Table 1) 3He/4He and 4He/20Ne ratios in pore water and gas in deep-sea sediments at DSDP Site 92-599B. https://doi.org/10.1594/PANGAEA.705055
  10. Sano, Y; Wakita, H (1987): (Table 1) 3He/4He and 4He/20Ne ratios in pore water and gas in deep-sea sediments at DSDP Site 92-601A. https://doi.org/10.1594/PANGAEA.705056
  11. Sano, Y; Wakita, H (1987): (Table 1) 3He/4He and 4He/20Ne ratios in pore water and gas in deep-sea sediments at DSDP Site 111-504B. https://doi.org/10.1594/PANGAEA.705046