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Patience, R L; Clayton, C J; Kearsley, A T; Rowland, Steve J; Bishop, A N; Rees, A W G; Bibby, K G; Hopper, A C (1990): Biochemical, geochemical and sedimentological study of ODP Leg 112 samples [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.753497, Supplement to: Patience, RL et al. (1990): An integrated biochemical, geochemical, and sedimentological study of organic diagenesis in sediments from Leg 112. In: Suess, E; von Huene, R; et al. (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 112, 135-153, https://doi.org/10.2973/odp.proc.sr.112.191.1990

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Abstract:
Organic-rich diatomaceous muds from Ocean Drilling Program Leg 112 (offshore Peru) are the subject of a comprehensive organic diagenetic study covering the burial interval, <1 to >100 m. The organic matter has been classified in terms of its elemental, biochemical, and geochemical compositions. About 60% of the organic carbon in sediments from <1 m can be attributed to hydrolyzable, biochemical constituents, while at 22 m this figure decreased to 20%. Pyrolysis-gas chromatography and gas chromatography-mass spectrometry chromatograms of these same sediments contain mainly hydrocarbons and nitrogenous compounds, with low amounts of other heteroatomic compounds, even though the total organic matter is rich in oxygen (about 35 atoms per 100 carbon atoms) and sulfur (1 to 5 atoms per 100 C atoms). Overall, the organic matter in these sediments, even at these shallow depths and young ages, has many of the geochemical features of far more deeply buried sediments, providing further strong evidence for the claim that "kerogen-formation" is a very early diagenetic process.
Project(s):
Coverage:
Median Latitude: -11.597222 * Median Longitude: -77.820178 * South-bound Latitude: -13.480160 * West-bound Longitude: -78.272170 * North-bound Latitude: -10.976660 * East-bound Longitude: -76.891500
Date/Time Start: 1986-11-01T12:45:00 * Date/Time End: 1986-12-04T00:30:00
Event(s):
112-679D * Latitude: -11.063830 * Longitude: -78.272170 * Date/Time Start: 1986-11-01T12:45:00 * Date/Time End: 1986-11-02T13:15:00 * Elevation: -462.0 m * Penetration: 245.4 m * Recovery: 116.03 m * Location: South Pacific Ocean * Campaign: Leg112 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 27 cores; 245.2 m cored; 0 m drilled; 47.3 % recovery
112-680B * Latitude: -11.065000 * Longitude: -78.077830 * Date/Time Start: 1986-11-05T20:30:00 * Date/Time End: 1986-11-06T14:30:00 * Elevation: -273.0 m * Penetration: 195.5 m * Recovery: 98.45 m * Location: South Pacific Ocean * Campaign: Leg112 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 22 cores; 195.5 m cored; 0 m drilled; 50.4 % recovery
112-681B * Latitude: -10.976660 * Longitude: -77.957670 * Date/Time Start: 1986-11-08T00:00:00 * Date/Time End: 1986-11-08T13:15:00 * Elevation: -162.0 m * Penetration: 143.5 m * Recovery: 97.3 m * Location: South Pacific Ocean * Campaign: Leg112 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 16 cores; 143.5 m cored; 0 m drilled; 67.8 % recovery
Size:
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