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Katz, Barry J (1988): Geochemistry of sediments and kerogenes of ODP Hole [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.743274, Supplement to: Katz, BJ (1988): Organic-geochemical character and hydrocarbon-source potential of Site 635. In: Austin, JA Jr.; Schlager, W; et al. (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 101, 381-388, https://doi.org/10.2973/odp.proc.sr.101.159.1988

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Abstract:
The organic matter contained within a series of Albian to Cenomanian, dark gray to black marls was characterized using pyrolysis techniques and analysis (elemental and carbon isotopes) of isolated kerogens. It was concluded that this material had a marine affinity. Variations in geochemical characteristics reflect differences in the extent of preservation, rather than changes in organic provenance. These changes appear to reflect differences in water depth and the position of the depositional site relative to the oxygen-minimum zone. Sediments displaying the most elevated levels of organiccarbon and hydrogen enrichment probably reflect sedimentation within the oxygen-minimum zone. Waters within the oxygen-minimum zone were probably dysaerobic, rather than anoxic. The presence of at least trace quantities of oxygen at the depositional site explains the poor degree of organic preservation and the material's largely gas-prone characteristics.
Project(s):
Ocean Drilling Program (ODP)
Coverage:
Latitude: 25.419700 * Longitude: -77.333000
Date/Time Start: 1985-03-09T17:03:00 * Date/Time End: 1985-03-11T19:00:00
Event(s):
101-635B * Latitude: 25.419700 * Longitude: -77.333000 * Date/Time Start: 1985-03-09T17:03:00 * Date/Time End: 1985-03-11T19:00:00 * Elevation: -3483.0 m * Penetration: 117.7 m * Recovery: 31.3 m * Location: South Atlantic Ocean * Campaign: Leg101 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 14 cores; 117.7 m cored; 0 m drilled; 26.6 % 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

  1. Katz, BJ (1988): (Table 1) Geochemistry of ODP Hole 101-635B. https://doi.org/10.1594/PANGAEA.743272
  2. Katz, BJ (1988): (Table 2) Elemental and isotope analyses of isolated kerogens for ODP Hole 101-635B. https://doi.org/10.1594/PANGAEA.743273