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Galimov, Erik M; Kodina, Ludmilla A; Bogacheva, M P; Shirinsky, V G (1982): Organic geochemical studies of DSDP Leg 64 Holes [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.818931, Supplement to: Galimov, EM et al. (1982): Organic geochemical studies of samples from Deep Sea Drilling Project Leg 64, Gulf of California, Sites 474, 477, 478, 479, and 481. In: Curray, JR; Moore, DG; et al. (eds.), Initial Reports of the Deep Sea Drilling Project (U.S. Govt. Printing Office), 64, 819-836, https://doi.org/10.2973/dsdp.proc.64.127.1982

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Abstract:
Twenty-six core samples from Leg 64, Holes 474, 474A, 477, 478, 479, and 481A in the Gulf of California, were provided by the Joint Oceanographic Institutions for Deep Earth Sampling (JOIDES) Advisory Panel on Organic Geochemistry for analysis. The high heat flow characteristic of the basin provides an opportunity to study the effect of temperature on the diagenesis of organic matter. The contents and carbon isotope compositions of the organic matter and bitumen fractions of different polarity, isoprenoid and normal alkane distributions, and the nature of tetrapyrrole pigments were studied. Relative contents of hydrocarbons and bitumens depend on the thermal history of the deposits. Among other criteria, the nature and content of tetrapyrrole pigments appear to be most sensitive to thermal stress. Whereas only chlorins are present in the immature samples, porphyrins, including VO-porphyrins, appear in the thermally altered deposits, despite the shallow burial depth. Alkane distributions in thermally changed samples are characterized by low values of phytane to 2-C18 ratios and an odd/even carbon preference index close to unity. The thermally altered samples show unusual carbon isotope distributions of the bitumen fractions.
The data also provide some evidence concerning the source of the organic matter and the degree of diagenesis.
Project(s):
Deep Sea Drilling Project (DSDP)
Coverage:
Median Latitude: 25.493717 * Median Longitude: -110.374420 * South-bound Latitude: 22.959300 * West-bound Longitude: -111.624800 * North-bound Latitude: 27.846000 * East-bound Longitude: -108.978000
Date/Time Start: 1978-12-02T00:00:00 * Date/Time End: 1979-01-03T00:00:00
Event(s):
64-474 * Latitude: 22.962000 * Longitude: -108.980700 * Date/Time: 1978-12-02T00:00:00 * Elevation: -3023.0 m * Penetration: 182.5 m * Recovery: 77.2 m * Location: North Pacific/Gulf of California/BASIN * Campaign: Leg64 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 19 cores; 173 m cored; 9.5 m drilled; 44.6 % recovery
64-474A * Latitude: 22.959300 * Longitude: -108.978000 * Date/Time: 1978-12-02T00:00:00 * Elevation: -3022.0 m * Penetration: 626 m * Recovery: 290.1 m * Location: North Pacific/Gulf of California/BASIN * Campaign: Leg64 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 49 cores; 453 m cored; 9.5 m drilled; 64 % recovery
64-477 * Latitude: 27.030800 * Longitude: -111.400300 * Date/Time: 1978-12-18T00:00:00 * Elevation: -2003.0 m * Penetration: 191 m * Recovery: 50.6 m * Location: North Pacific/Gulf of California/BASIN * Campaign: Leg64 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 21 cores; 172 m cored; 19 m drilled; 29.4 % recovery
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
4 datasets

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Datasets listed in this publication series

  1. Galimov, EM; Kodina, LA; Bogacheva, MP et al. (1982): (Table 2) Relative content of alkanes at DSDP Leg 64 Holes. https://doi.org/10.1594/PANGAEA.818928
  2. Galimov, EM; Kodina, LA; Bogacheva, MP et al. (1982): (Table 1) Organic carbon, bitumen, and bitumen components at DSDP Leg 64 Holes. https://doi.org/10.1594/PANGAEA.818927
  3. Galimov, EM; Kodina, LA; Bogacheva, MP et al. (1982): (Table 4) Carbon isotope composition of organic matter, bitumen, and bitumen fractions at DSDP Leg 64 Holes. https://doi.org/10.1594/PANGAEA.818930
  4. Galimov, EM; Kodina, LA; Bogacheva, MP et al. (1982): (Table 3) Visible light absorption spectra of bitumen fractions at DSDP Leg 64 Holes. https://doi.org/10.1594/PANGAEA.818929