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Kawahata, Hodaka; Ishizuka, Toshio (1992): Amino acids in interstitial waters from ODP Sites 126-790 and 126-791 [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.774328, Supplement to: Kawahata, H; Ishizuka, T (1992): Amino acids in interstitial waters from Sites 790 and 791 in the Izu-Bonin Island Arc. In: Taylor, B; Fujioka, K; et al. (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 126, 531-540, https://doi.org/10.2973/odp.proc.sr.126.154.1992

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Abstract:
Sites 790 and 791 lie in the eastern half graben of the Sumisu Rift, a backarc graben west of the active Izu-Bonin arc volcanoes Sumisu Jima and Tori Shima, at 30°54.96'N, 139°50.66'E, in 2223 m water depth and 30°54.97'N, 139°52.20'E, in 2268 m water depth, respectively. A small decrease in the sulfate concentration in the interstitial waters from these sites suggests fairly low microbial activity by sulfate-reducing bacteria.
The values of the dissolved free amino acids (DFAA) in the interstitial waters from both sites range from 1.26 to 6.82 µmol/L, with an average of 3.81 µmol/L. The acidic, basic, neutral, aromatic, and sulfur-containing amino acids have average values of 0.32, 0.50, 2.71, 0.15, and 0.09 µmol/L, respectively. The relative abundances of the acidic, basic, neutral, aromatic, and sulfur-containing amino acids average 8, 13,72, 4, and 1 mol%, respectively. Glycine, serine, alanine, ornithine, and aspartic acid are major constituent amino acids. The dissolved combined amino acids (DCAA) values range between 1.25 and 44.35 µmol/L, with an average of 10.36 µmol/L. The mean concentrations and relative abundances of the acidic, basic, neutral, aromatic, and sulfur-containing amino acids are 2.29 (22 mol%), 0.60 (6 mol%), 6.70 (65 mol%), 0.09 (1 mol%), and 0.00 µmol/L (0 mol%), respectively. Glycine is the most abundant amino acid residue, followed by glutamic acid, serine, and alanine. The predominance of DCAA over DFAA present in the interstitial waters from Sites 790 and 791 is consistent with previous results from interstitial-water and seawater analyses.
The most plausible source for the DCAA is biogenic calcareous debris. A much greater depletion of aspartic acid and the basic fraction, except for ornithine, is found in the DCAA. The decomposition of the basic amino acid fraction or its incorporation to clay minerals would result in a decrease in its relative abundance, whereas ornithine is produced during early diagenesis. The characteristics of the amino acids in the interstitial waters are (1) a greater depletion of the acidic amino acid fraction in the DFAA than in the DCAA and (2) the enrichment of glycine and serine in both. The adsorption or reaction of the amino acids in interstitial waters with biogenic carbonates would be responsible for the lower relative abundance of the acidic fraction of the DFAA. The production of glycine during early diagenesis and its stability in solution would raise its relative abundance in the interstitial waters.
Project(s):
Ocean Drilling Program (ODP)
Coverage:
Median Latitude: 30.913971 * Median Longitude: 139.853609 * South-bound Latitude: 30.910900 * West-bound Longitude: 139.837000 * North-bound Latitude: 30.916500 * East-bound Longitude: 139.870100
Date/Time Start: 1989-04-29T15:56:00 * Date/Time End: 1989-05-13T22:45:00
Event(s):
126-790A * Latitude: 30.915400 * Longitude: 139.843900 * Date/Time Start: 1989-04-29T15:56:00 * Date/Time End: 1989-04-30T06:30:00 * Elevation: -2233.0 m * Penetration: 37.4 m * Recovery: 35.71 m * Location: Philippine Sea * Campaign: Leg126 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 4 cores; 37.4 m cored; 0 m drilled; 95.5 % recovery
126-790B * Latitude: 30.916100 * Longitude: 139.844300 * Date/Time Start: 1989-04-30T06:30:00 * Date/Time End: 1989-05-01T11:15:00 * Elevation: -2234.0 m * Penetration: 138.9 m * Recovery: 88.69 m * Location: Philippine Sea * Campaign: Leg126 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 15 cores; 138.9 m cored; 0 m drilled; 63.9 % recovery
126-790C * Latitude: 30.910900 * Longitude: 139.837000 * Date/Time Start: 1989-05-01T11:15:00 * Date/Time End: 1989-05-04T07:15:00 * Elevation: -2234.0 m * Penetration: 387.1 m * Recovery: 127.32 m * Location: Philippine Sea * Campaign: Leg126 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 33 cores; 302.1 m cored; 0 m drilled; 42.1 % recovery
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
3 datasets

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Datasets listed in this publication series

  1. Kawahata, H; Ishizuka, T (1992): (Table 4) Concentrations of dissolved combined amino acids in interstitial waters of ODP Sites 126-790 and 126-791. https://doi.org/10.1594/PANGAEA.774327
  2. Kawahata, H; Ishizuka, T (1992): (Table 3) Concentrations of dissolved free amino acids in interstitial waters of ODP Sites 126-790 and 126-791. https://doi.org/10.1594/PANGAEA.774325
  3. Kawahata, H; Ishizuka, T (1992): (Table 2) Concentrations of total hydrolyzable amino acids in interstitial waters of ODP Sites 126-790 and 126-791. https://doi.org/10.1594/PANGAEA.774323