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Hunt, John M (1975): C4-C7 alkenones in deep sea sediments. PANGAEA, https://doi.org/10.1594/PANGAEA.770334, Supplement to: Hunt, JM (1975): Origin of gasoline range alkanes in the deep sea. Nature, 254(5499), 411-413, https://doi.org/10.1038/254411a0

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Abstract:
It is believed that C4 to C7 hydrocarbons in petroleum are formed by the cracking of organic matter at depths generally exceeding 1,000 m at temperatures in excess of 50 °C (Cordel, 1972; Dow, 1974; Tissot et al., 1974)). Also, none of the alkanes in the butane-heptane range are formed biologically as far as is known at present. Consequently, it is thought that they do not occur in shallow, Recent sediments. In 1962, I analysed 22 samples of Recent sediments from 7 different environments and verified that these hydrocarbons were not present at the p.p.m. level (Dunton and Hunt, 1962) although traces of a few hydrocarbons such as butane, isobutane, isopentane and n-heptane have been found (Sokolov, 1957; Veber and Turkeltaub, 1958; Erdman et al., 1958; Emery and Hoggan, 1958). No identification of individual hexanes or heptanes has been reported except when there has been clear evidence of seepage from deeper source sediments (McIver, 1973).
Project(s):
Coverage:
Median Latitude: -5.328226 * Median Longitude: 143.807891 * South-bound Latitude: -48.957300 * West-bound Longitude: 39.369200 * North-bound Latitude: 39.494700 * East-bound Longitude: -92.043300
Date/Time Start: 1968-08-20T00:00:00 * Date/Time End: 1973-07-26T00:00:00
Event(s):
1-3 * Latitude: 23.030000 * Longitude: -92.043300 * Date/Time: 1968-08-20T00:00:00 * Elevation: -3747.0 m * Penetration: 627.9 m * Recovery: 46.6 m * Location: Gulf of Mexico/PLAIN * Campaign: Leg1 * Basis: Glomar Challenger * Device: Drilling/drill rig (DRILL) * Comment: 11 cores; 99.2 m cored; 0 m drilled; 47 % recovery
22-217 * Latitude: 8.926200 * Longitude: 90.538800 * Date/Time: 1972-02-24T00:00:00 * Elevation: -3010.0 m * Penetration: 614.5 m * Recovery: 181.6 m * Location: Indian Ocean//RIDGE * Campaign: Leg22 * Basis: Glomar Challenger * Device: Drilling/drill rig (DRILL) * Comment: 35 cores; 326.5 m cored; 9.5 m drilled; 55.6 % recovery
22-218 * Latitude: 8.007000 * Longitude: 86.282800 * Date/Time: 1972-03-01T00:00:00 * Elevation: -3749.0 m * Penetration: 773 m * Recovery: 59 m * Location: Indian Ocean//FAN * Campaign: Leg22 * Basis: Glomar Challenger * Device: Drilling/drill rig (DRILL) * Comment: 27 cores; 251 m cored; 0 m drilled; 23.5 % recovery
Size:
2 datasets

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