Citation:

S0012-821X(97)00013-7

Name: Organic carbon analyses of ODP Site 160-971 in the Mediterranean Sea
Published: 1997
License: https://creativecommons.org/licenses/by/3.0/

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Published: 1997 (exact date unknown) • DOI registered: 2009-07-21

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Abstract:

Mud volcanism on the Mediterranean Ridge is caused by extrusion of overpressured sediments, with consequent formation of spectacular dome-shaped features composed of mud breccias at the seafloor. The organic material in the mud breccia of the Napoli mud volcano is a mixture of different facies, stratigraphic origin and thermal maturities. One portion is synsedimentary organic material with only minor diagenetic alterations and represents sedimenting material that was embedded into the mud volcano during its extrusion. The mud breccia also contains thermally mature organic material of mainly terrestrial provenance with algae of fresh- and brackish-water origin. Vitrinite reflectance data of this maturity generation range from 0.65 to 0.90% R(oil) and thus characterize thermally mature source rocks, a rank which is corroborated by fluorescence and molecular characteristics. The predominance of vitrinite in the maceral assemblages and the occurrence of biomarkers of terrigenous origin suggest that the major part of the mud matrix derives from a lacustrine or riverine sedimentary unit in the subsurface, possibly from the Messinian stage. A third generation of organic material includes inertinites and vitrinites of high reflectance, which represent recycled organic matter present in any marine sediment.

By use of the Lopatin method for modelling the thermal maturation of hydrocarbon source rocks from the vitrinite reflectance data, we calculated that the depth of mobilization ranges from 4900 m to 7500 m, depending upon the temperature gradient used.

Project(s):

Ocean Drilling Program (ODP)

Coverage:

Median Latitude: 33.720215 * Median Longitude: 24.719966 * South-bound Latitude: 33.703300 * West-bound Longitude: 24.680600 * North-bound Latitude: 33.736700 * East-bound Longitude: 24.802000

Date/Time Start: 1995-04-17T06:30:00 * Date/Time End: 1995-04-24T12:48:00

Event(s):

160-970A * Latitude: 33.736700 * Longitude: 24.802000 * Date/Time Start: 1995-04-17T06:30:00 * Date/Time End: 1995-04-19T09:00:00 * Elevation: -2076.0 m * Penetration: 201.4 m * Recovery: 50.47 m * Location: Eastern Basin * Campaign: * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 22 cores; 201.4 m cored; 0 m drilled; 25.1 % recovery

160-971A * Latitude: 33.703300 * Longitude: 24.713600 * Date/Time Start: 1995-04-20T14:01:00 * Date/Time End: 1995-04-21T06:35:00 * Elevation: -2038.0 m * Penetration: 105.9 m * Recovery: 58.75 m * Location: Eastern Basin * Campaign: * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 12 cores; 105.9 m cored; 0 m drilled; 55.5 % recovery

160-971B * Latitude: 33.713600 * Longitude: 24.701700 * Date/Time Start: 1995-04-21T06:35:00 * Date/Time End: 1995-04-23T15:33:00 * Elevation: -2152.0 m * Penetration: 203.5 m * Recovery: 64.19 m * Location: Eastern Basin * Campaign: * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 22 cores; 203.5 m cored; 0 m drilled; 31.5 % recovery

License:

Creative Commons Attribution 3.0 Unported (CC-BY-3.0)

Size:

2 datasets

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Datasets listed in this publication series

Schulz, H-M; Emeis, K-C; Volkmann, N (1997): (Table 2) Organic geochemical character of samples of mud breccia from ODP Site 160-971. https://doi.org/10.1594/PANGAEA.721833
Schulz, H-M; Emeis, K-C; Volkmann, N (1997): (Table 1) Reflectance of vitrinite and flourescence of liptinite of organoclasts of mud breccia samples from ODP Site 160-971. https://doi.org/10.1594/PANGAEA.721832