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Fowler, Martin G (1994): Organic geochemistry of ODP Leg 135 sediment samples [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.803124, Supplement to: Fowler, MG (1994): Organic geochemistry of sediments from Leg 135 (Lau Basin) and of an oil seep (Tonga). In: Hawkins, J; Parson, L; Allan, J; et al. (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 135, 667-676, https://doi.org/10.2973/odp.proc.sr.135.125.1994

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Abstract:
The average total organic carbon (TOC) content obtained after Rock-Eval/TOC analysis of 156 sediment samples from the eight sites cored during Leg 135 is 0.05%. Hence, the TOC content of Leg 135 sediments is extremely low. The organic matter that is present in these samples is probably mostly reworked and oxidized material. Ten sediment samples were selected for extraction and analysis by gas chromatography and gas chromatography-mass spectrometry. Very low amounts of extractable hydrocarbons were obtained and some aspects of the biomarker distributions suggest that these hydrocarbons are not representative of the organic matter indigenous to the samples.
A sample of an oil seep from Pili, Tongatapu was also analyzed. The seep is a biodegraded, mature oil that shows many characteristics in common with previously published analyses of oil seeps from Tongatapu. Biomarker evidence indicates that its source is a mature, marine carbonate of probable Late Cretaceous-Early Tertiary age. The source rock responsible for the Tongatapu oil seeps remains unknown.
Project(s):
Ocean Drilling Program (ODP)
Coverage:
Median Latitude: -20.897532 * Median Longitude: -176.458082 * South-bound Latitude: -23.346000 * West-bound Longitude: -177.862000 * North-bound Latitude: -18.501000 * East-bound Longitude: -175.297000
Date/Time Start: 1990-12-21T20:35:00 * Date/Time End: 1991-02-10T20:30:00
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. Fowler, MG (1994): (Table 2) Hydrocrabons of ODP Leg 135 sediment samples. https://doi.org/10.1594/PANGAEA.803122
  2. Fowler, MG (1994): (Table 1) Organic geochemistry of ODP Leg 135 sediment samples. https://doi.org/10.1594/PANGAEA.803121
  3. Fowler, MG (1994): (Table 3) Sterane and terpane biomarker ratios of ODP Leg 135 sediment samples. https://doi.org/10.1594/PANGAEA.803123