Ijiri, Akira; Sakamoto, Tatsuhiko; Tsunogai, Urumu; Gamo, Toshitaka; Saito, Saneatsu; Suyehiro, Kiyoshi (2003): Stable isotope ratios and geochemical composition of authigenic carbonates from ODP Sites 186-1150 and 186-1151 [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.783555, Supplement to: Ijiri, A et al. (2003): Data report: Authigenic carbonates at Sites 1150 and 1151. In: Suyehiro, K; Sacks, IS; Acton, GD; Oda, M (eds.) Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 186, 1-6, https://doi.org/10.2973/odp.proc.sr.186.109.2003
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Abstract:
Several carbonaceous layers or fragments were recovered from sediments of Sites 1150 and 1151 on the deep-sea terrace of the Japan Trench during Leg 186. The X-ray diffraction analysis (XRD) data indicate that these are predominantly dolomitic. In this study, carbon and oxygen isotopes of these carbonates recovered at Sites 1150 and 1151 are presented. The oxygen isotope ratios of the dolomites analyzed range from +0.4 per mil to +4.1 per mil vs. Peedee formation belemnite (PDB) and those of calcites from +0.6 per mil to +2.8 per mil PDB. The isotopic composition of carbon varies from -7.0 per mil to +12.3 per mil PDB in dolomite and from -13.4 per mil to -24.1 per mil PDB in calcite. The wide range of carbon isotopic compositions indicates that the carbonate samples were formed by the decomposition of organic matter through reactions such as oxidation, sulfate reduction, and methane formation during diagenesis.
Project(s):
Ocean Drilling Program (ODP)
Coverage:
Median Latitude: 39.081590 * Median Longitude: 143.332644 * South-bound Latitude: 38.751980 * West-bound Longitude: 143.331910 * North-bound Latitude: 39.181910 * East-bound Longitude: 143.334400
Date/Time Start: 1999-06-22T18:30:00 * Date/Time End: 1999-08-02T17:45:00
Event(s):
186-1150A * Latitude: 39.181910 * Longitude: 143.331910 * Date/Time Start: 1999-06-22T18:30:00 * Date/Time End: 1999-06-26T22:15:00 * Elevation: -2680.8 m * Penetration: 722.6 m * Recovery: 566.4 m * Location: North Pacific Ocean * Campaign: Leg186 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 76 cores; 722.6 m cored; 0 m drilled; 78.4 % recovery
186-1150B * Latitude: 39.181900 * Longitude: 143.332450 * Date/Time Start: 1999-06-26T22:15:00 * Date/Time End: 1999-07-03T13:30:00 * Elevation: -2680.8 m * Penetration: 1181.6 m * Recovery: 269.29 m * Location: North Pacific Ocean * Campaign: Leg186 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 50 cores; 478.3 m cored; 703.3 m drilled; 56.3 % recovery
186-1151A * Latitude: 38.751980 * Longitude: 143.334400 * Date/Time Start: 1999-07-28T22:00:00 * Date/Time End: 1999-08-02T17:45:00 * Elevation: -2182.2 m * Penetration: 1113.6 m * Recovery: 707.6 m * Location: North Pacific Ocean * Campaign: Leg186 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 108 cores; 1035.6 m cored; 0 m drilled; 68.3 % 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
- Ijiri, A; Sakamoto, T; Tsunogai, U et al. (2003): (Table T2) Minerals and major element oxides of authigenic carbonates from ODP Site 186-1150. https://doi.org/10.1594/PANGAEA.783552
- Ijiri, A; Sakamoto, T; Tsunogai, U et al. (2003): (Table T1) Carbon and oxygen isotope ratios of authigenic carbonates from ODP Site 186-1150 and Hole 186-1151A. https://doi.org/10.1594/PANGAEA.783551