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  • 128-798A; 128-798B; 128-799A; 128-799B; DRILL; Drilling/drill rig; Japan Sea; Joides Resolution; Leg128; Ocean Drilling Program; ODP  (2)
  • 164-994; 164-997; COMPCORE; Composite Core; DEPTH, sediment/rock; DSDP/ODP/IODP sample designation; Event label; Isotope ratio mass spectrometry; Joides Resolution; Leg164; Nicaraguan Rise, North Atlantic Ocean; Ocean Drilling Program; ODP; Sample code/label; South Atlantic Ocean; δ18O, water  (1)
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  • 1
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    Unknown
    (Table 1) Stable oxygen isotope ratios of interstitial waters from ODP Sites 164-994 and 164-997 (2000)
    PANGAEA
    In:  Supplement to: Matsumoto, Ryo; Borowski, Walter S (2000): Gas hydrate estimates from newly determined oxygen isotopic fractionation (aGH-IW) and d18O anomalies of the interstitial waters: Leg 164, Blake Ridge. In: Paull, CK; Matsumoto, R; Wallace, PJ; Dillon, WP (eds.) Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 164, 1-8, https://doi.org/10.2973/odp.proc.sr.164.206.2000
    Details
    Publication Date: 2024-01-09
    Description: The d18O values of interstitial waters from Site 994 and Site 997 sediments, Blake Ridge, western Atlantic, tend to decrease with depth from 0.3 per mil to -0.5 per mil Standard Mean Ocean Water in the upper 200 mbsf, then fluctuate with significant positive spikes of Delta = 0.2 per mil - 0.5 per mil in the gas hydrate zone (200 to 450 mbsf), and finally increase from -0.4 per mil to -0.2 per mil toward 700 mbsf. Positive shifts of d18O IW in the gas hydrate zone are probably caused by the dissociation of gas hydrates originally contained in sediment cores. Gas hydrates recovered from the sites are enriched in 18O, d18O ranging between 2.7 per mil and 3.5 per mil. d18O values of gas hydrates and ambient interstitial waters give an oxygen isotopic fractionation factor of 1.0034-1.0040 at 12°-16°C and ~31 MPa (3 km below sea level). Based on this fractionation and observed isotopic anomalies in the gas hydrate zone, gas hydrates occupy 6% to 12% of pore-space volume within Blake Ridge sediments.
    Keywords: 164-994; 164-997; COMPCORE; Composite Core; DEPTH, sediment/rock; DSDP/ODP/IODP sample designation; Event label; Isotope ratio mass spectrometry; Joides Resolution; Leg164; Nicaraguan Rise, North Atlantic Ocean; Ocean Drilling Program; ODP; Sample code/label; South Atlantic Ocean; δ18O, water
    Type: Dataset
    Format: text/tab-separated-values, 68 data points
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    DATA PANGAEA
  • 2
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    Unknown
    Mössbauer characterisation of sediments from ODP Sites 128-798 and 128-799 (1992)
    PANGAEA
    In:  Supplement to: Minai, Yoshitaka; Kusudo, Iori; Matsumoto, Ryo; Sato, Haruo; Tominaga, Takeshi (1992): Mössbauer characterization of sediments from Sites 798 and 799, 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), 739-746, https://doi.org/10.2973/odp.proc.sr.127128-1.181.1992
    Details
    Publication Date: 2024-01-09
    Description: 57Fe Mössbauer spectra for 26 sediment and 6 carbonate concretion samples from Sites 798 and 799 were recorded at 293 K. Most spectra were deconvolved to two quadrupole doublets without magnetic hyperfine structure. Typical Mössbauer parameters were: isomer shift (I.S.) = 0.34 mm/s and quadrupole splitting (Q.S.) = 0.64 mm/s for the paramagnetic Fe3+ component (partly, pyrite); I.S. = 1.13 mm/s and Q.S. = 2.64 mm/s for the high-spin Fe2+ component derived from iron-bearing aluminosilicates. A few spectra included other high-spin Fe2+ components ascribed to iron-bearing carbonate minerals (e.g., ferroan magnesite), according to the Mössbauer parameters for Fe2+ in the carbonate concretions. We present the distribution of iron among different chemical forms as a function of depth. These data might indicate changes of depositional and diagenetic conditions.
    Keywords: 128-798A; 128-798B; 128-799A; 128-799B; DRILL; Drilling/drill rig; Japan Sea; Joides Resolution; Leg128; Ocean Drilling Program; ODP
    Type: Dataset
    Format: application/zip, 5 datasets
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    DATA PANGAEA
  • 3
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    Unknown
    Geochemistry of ODP Sites 128-798 and 128-799 sediments (1992)
    PANGAEA
    In:  Supplement to: Minai, Yoshitaka; Matsumoto, Ryo; Watanabe, Yoshio; Tominaga, Takeshi (1992): Geochemistry of rare earths and other trace elements in sediments from Sites 798 and 799, 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), 719-737, https://doi.org/10.2973/odp.proc.sr.127128-1.180.1992
    Details
    Publication Date: 2024-01-09
    Description: Nineteen trace elements, including seven rare earth elements (REE's), and 10 major and minor elements in 76 sediment samples from Sites 798 (Oki Ridge) and 799 (Yamato Trough) were determined by means of instrumental neutron activation analysis and X-ray fluorescence spectrometry. Most REE patterns (chondrite-normalized) of the sediments from both sites were nearly identical to the patterns of terrigenous materials. The cerium anomaly (slightly positive) frequently appeared in REE patterns of the sediments (200-750 mbsf) from Site 799. Cerium may be selectively incorporated into the sediments with hydrogenous manganese precipitation. However, the degree of the anomaly was not well correlated with manganese content, suggesting that cerium may behave as a trivalent REE (like the other REE's) during diagenesis while manganese is transported in the sediment column accompanied by reduction to a lower oxidation state. The Th/Sc ratio of the sediments from Sites 798 and 799 tended to decrease with penetration depth. Such a depth profile may indicate a decrease in basic volcanism activities from the Pliocene (Site 798) and Miocene (Site 799). The La/Yb ratio and degree of europium anomaly also varied with depth, which may imply that two or more components with different REE patterns were supplied throughout sedimentation at sites in the Japan Sea.
    Keywords: 128-798A; 128-798B; 128-799A; 128-799B; DRILL; Drilling/drill rig; Japan Sea; Joides Resolution; Leg128; Ocean Drilling Program; ODP
    Type: Dataset
    Format: application/zip, 4 datasets
    Location Call Number Expected Availability
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    DATA PANGAEA
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