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Sekiguchi, Kaichi; Hirai, Akio (1986): Organic geochemistry, visual composition, atomic ratios, and reflectance at DSDP Site 87-582, 87-583 and 87-584 [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.802132, Supplement to: Sekiguchi, K; Hirai, A (1986): Organic geochemistry of sediments from Deep Sea Drilling Project Leg 87, Sites 582 and 583, Nankai Trough, and Site 584, Japan Trench. In: Kagami, H; Karig, DE; Coulbourn, WT; et al. (eds.), Initial Reports of the Deep Sea Drilling Project, Washington (U.S. Govt. Printing Office), 87, 897-906, https://doi.org/10.2973/dsdp.proc.87.136.1986

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Abstract:
Geochemical analyses of organic matter were carried out on Quaternary sediments from Sites 582 and 583 (Nankai Trough) and on Pliocene to Miocene sediments from Site 584 (Japan Trench), DSDP Leg 87, to evaluate petroleum-generating potential and to characterize the organic matter.
The vitrinite-huminite reflectances of indigenous materials for these sites are less than 0.3% indicating the immature nature of the sediments. The sediments, however, contain remarkable amounts of recycled organic materials. The Quaternary sediments from Sites 582 and 583 contain small amounts of amorphous organic matter (less than 0.75 wt.% organic carbon and 66-90% amorphous debris), which is composed of predominantly recycled, oxidized, and over-matured (or matured) Type III material. The amount of hydrocarbon yield indicates that those sediments have lean-source potential for commercial hydrocarbon generation. The Pliocene to Miocene sediments from Site 584 contain organic matter (0.3-1.09 wt.% organic carbon) of predominantly amorphous debris (68-96%) that originated in two sources, an indigenous Type II material and a recycled, over-matured material. Pyrolysis shows an upward increase in the section of hydrocarbon yield and the same trend is also observed in organic-carbon content. The amount of the yield indicates that the Miocene sediments have lean-to-fair source potential and the Pliocene sediments have fair-to-good source potential.
Project(s):
Deep Sea Drilling Project (DSDP)
Coverage:
Median Latitude: 35.545893 * Median Longitude: 138.229069 * South-bound Latitude: 31.775000 * West-bound Longitude: 133.854300 * North-bound Latitude: 40.466700 * East-bound Longitude: 143.951700
Date/Time Start: 1982-06-28T00:00:00 * Date/Time End: 1982-08-05T00:00:00
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. Sekiguchi, K; Hirai, A (1986): (Appendix B) Visual composition and atomic ratio at DSDP Site 87-582, 87-583 and 87-584. https://doi.org/10.1594/PANGAEA.802130
  2. Sekiguchi, K; Hirai, A (1986): (Appendix C) Reflectance of vitrinite-huminite and inertinite at DSDP Site 87-582, 87-583 and 87-584. https://doi.org/10.1594/PANGAEA.802131
  3. Sekiguchi, K; Hirai, A (1986): (Appendix A) Whole-sediment analyses: Carbon and Rock-Eval prolysis at DSDP Site 87-582, 87-583 and 87-584. https://doi.org/10.1594/PANGAEA.802129