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Yamamoto, Masanobu; Yamamuro, Masumi; Tada, Ryuji (2000): Carbon, hydrocarbon and alkenone composition and indices of ODP Hole 167-1016C sediments [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.794499, Supplement to: Yamamoto, M et al. (2000): Late Quaternary records of organic carbon, calcium carbonate, and biomarkers from Site 1016 off Point Conception, California margin. In: Lyle, M; Koizumi, I; Richter, C; Moore, TC Jr (eds.) Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 167, 1-12, https://doi.org/10.2973/odp.proc.sr.167.224.2000

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Abstract:
Total organic carbon (TOC) and calcium carbonate (CaCO3) concentrations were determined for 304 samples, and biomarkers were analyzed for 101 samples from Core 167-1016C-1H. TOC varies between 1% and 2%, and CaCO3 is typically 1%-4%, with peaks reaching 14%. Paleotemperature estimated from Uk'37 varies from 8.5° to 17.5°C. The Uk'37 variation implies that Core 167-1016C-1H covers oxygen isotope Stages 1-6. Peaks of diatom-derived C25:1 HBI alkene concentrations occur during warming intervals, suggesting intensified upwelling during deglaciation. The concentrations of haptophyte-derived alkenones and diatom-derived C25:1 HBI alkene vary out of phase, which presumably resulted from the changes in the mode of nutrient supply to surface mixed layer. Maximal CaCO3 contents (>10%) were observed in both warming and cooling intervals. The peak in cooling interval relates to an alkenone maximum, whereas the peaks in warming intervals do not. This implies that carbonate production is not the only factor controlling carbonate compensation depth at this site, and it suggests considering the changes in North Pacific deep-water chemistry. Petroleum-type compounds are present in Site 1016 sediments. Their concentrations are maximized in the warming intervals that correspond to the timing of destruction of a huge tar mound off Point Conception. The tarry material was presumably transported by the Arguello Fan system to Site 1016.
Project(s):
Ocean Drilling Program (ODP)
Coverage:
Latitude: 34.538200 * Longitude: -122.276000
Date/Time Start: 1996-05-25T03:30:00 * Date/Time End: 1996-05-25T05:45:00
Event(s):
167-1016C * Latitude: 34.538200 * Longitude: -122.276000 * Date/Time Start: 1996-05-25T03:30:00 * Date/Time End: 1996-05-25T05:45:00 * Elevation: -3835.0 m * Penetration: 18.7 m * Recovery: 18.76 m * Location: North Pacific Ocean * Campaign: Leg167 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 2 cores; 18.7 m cored; 0 m drilled; 100.3 % recovery
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
5 datasets

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Datasets listed in this publication series

  1. Yamamoto, M; Yamamuro, M; Tada, R (2000): (Appendix A) Concentrations and unsaturation indices of alkenones and alkenoates in ODP Hole 167-1016C sediments. https://doi.org/10.1594/PANGAEA.794493
  2. Yamamoto, M; Yamamuro, M; Tada, R (2000): (Appendix B) Carbon and nitrogen composition of ODP Hole 167-1016C sediments. https://doi.org/10.1594/PANGAEA.794494
  3. Yamamoto, M; Yamamuro, M; Tada, R (2000): (Appendix D) Concentrations of diatom- and prokaryote-derived compounds in ODP Hole 167-1016C sediments. https://doi.org/10.1594/PANGAEA.794496
  4. Yamamoto, M; Yamamuro, M; Tada, R (2000): (Appendix E) Concentrations of petroleum-type compounds in ODP Hole 167-1016C sediments. https://doi.org/10.1594/PANGAEA.794497
  5. Yamamoto, M; Yamamuro, M; Tada, R (2000): (Appendix C) Long-chain n-alkanes, carbon preference index and organic matter content of ODP Hole 167-1016C sediments. https://doi.org/10.1594/PANGAEA.794495