Copelin, E C; Larter, S R (1983): (Table 1) Organic geochemistry at DSDP Leg 71 Holes [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.815222, Supplement to: Copelin, EC; Larter, SR (1983): Chemical characterization of aromatic hydrocarbons, kerogen, and humic acids in Deep Sea Drilling Project Leg 71 Cores. In: Ludwig, WJ; Krasheninnikov, VA; et al. (eds.), Initial Reports of the Deep Sea Drilling Project (U.S. Govt. Printing Office), 71, 1045-1049, https://doi.org/10.2973/dsdp.proc.71.140.1983
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Abstract:
Forty-three core samples from Sites 511 through 514 of DSDP Leg 71 were analyzed geochemically. The black shales at the bottom of Hole 511, in the basin province of the Falkland Plateau, contain an average of 1590 ppm extractable organic matter (EOM) and 120 ppm hydrocarbons. Whereas molecular type-carbon number distributions of mono- and polynuclear aromatic hydrocarbons and their sulphur and oxygen analogues in the black shale "aromatic hydrocarbon" fractions are very similar to those of many crude oils, other data - gas chromatography (GC) fingerprint, pyrolysis GC, visual kerogen analysis, H/C ratio - suggest the black shale section is thermally immature. Together, these observations imply that many of the hydrocarbons were deposited with the original sediments or are diagenetic products of other biological compounds. Pyrograms of the humic acid and kerogen fractions from the black shale interval are typical of geopolymers derived from marine algal material. It appears that these humic acids and kerogens are derived from the same lipid stock.
Project(s):
Deep Sea Drilling Project (DSDP)
Coverage:
Median Latitude: -48.417420 * Median Longitude: -32.790380 * South-bound Latitude: -51.004700 * West-bound Longitude: -46.971700 * North-bound Latitude: -46.046200 * East-bound Longitude: -24.640000
Date/Time Start: 1980-01-15T00:00:00 * Date/Time End: 1980-02-08T00:00:00
Minimum DEPTH, sediment/rock: 4.1 m * Maximum DEPTH, sediment/rock: 627.0 m
Event(s):
71-511 * Latitude: -51.004700 * Longitude: -46.971700 * Date/Time: 1980-01-15T00:00:00 * Elevation: -2589.0 m * Penetration: 632 m * Recovery: 384.4 m * Location: South Atlantic/PLATEAU * Campaign: Leg71 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 68 cores; 616.5 m cored; 14.5 m drilled; 62.4 % recovery
71-512 * Latitude: -49.869800 * Longitude: -40.845200 * Date/Time: 1980-01-22T00:00:00 * Elevation: -1846.0 m * Penetration: 77.9 m * Recovery: 67 m * Location: South Atlantic/BANK * Campaign: Leg71 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 19 cores; 77.3 m cored; 0 m drilled; 86.6 % recovery
71-513 * Latitude: -47.583200 * Longitude: -24.640000 * Date/Time: 1980-02-02T00:00:00 * Elevation: -4373.0 m * Penetration: 94.5 m * Recovery: 56.7 m * Location: South Atlantic/FLANK * Campaign: Leg71 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 9 cores; 85 m cored; 9.5 m drilled; 66.7 % recovery
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | ||||
| 2 | Latitude of event | Latitude | ||||
| 3 | Longitude of event | Longitude | ||||
| 4 | Elevation of event | Elevation | m | |||
| 5 | Sample code/label | Sample label | Copelin, E C | DSDP/ODP/IODP sample designation | ||
| 6 | DEPTH, sediment/rock | Depth sed | m | Geocode – mbsf | ||
| 7 | Organic matter, extractable | EOM | mg/kg | Copelin, E C | see reference(s) | |
| 8 | Hydrocarbons | HC | µg/g | Copelin, E C | Gas chromatography | |
| 9 | Humic acid | Hum ac | mg/g | Copelin, E C | Pyrolysis gas chromatography | Humic acids were not purified by dialysis; empty cells = not isolated |
| 10 | Hydrocarbons | HC | % | Copelin, E C | Gas chromatography | Extractable organic matter |
| 11 | Saturated hydrocarbon fraction | Sat HC | % | Copelin, E C | Gas chromatography | Extractable organic matter |
| 12 | Aromatics | Aromatics | % | Copelin, E C | Mass spectrometry | Extractable organic matter |
| 13 | Organic matter | OM | % | Copelin, E C | see reference(s) | Extractable; O-heterocyclic compounds |
| 14 | Asphaltenes | Asphaltenes | % | Copelin, E C | Chromatographic | Extractable organic matter |
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
371 data points