Baker, Earl W; Louda, William (1984): Highly dealkylated copper and nickel etioporpyfrins in marine sediments [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.763356, Supplement to: Baker, EW; Louda, W (1984): Highly deaikylated copper and nickel etioporphyrins in marine sediments. Organic Geochemistry, 6, 183-192, https://doi.org/10.1016/0146-6380(84)90040-8
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Abstract:
Copper porphyrins have been recognized as natural constituents of marine sediments only within the past 5 years (Palmer and Baker, 1978, Science201, 49–51). In that report it was suggested that these pigments may derive from and be markers for oxidized terrestrial organic matter redeposited in the marine environment.
In the present study we describe the distribution of copper porphyrins in sediments from several north Pacific and Gulf of California DSDP/IPQD sites (Legs 56,63,64). These allochthonous pigments have now been found to be accompanied by identical arrays of highly dealkylated nickel etioporphyrins. Evaluation of data from this and past studies clearly reveals that there is a strong carbon-number distribution similarity betweeen coincident Cu and Ni etioporphyrins. This homology match is taken as reflecting a common source for the tetrapyrrole ligands of this population of Cu and Ni chelates.
Predepositional generation of these highly dealkylated etioporphyrins is concluded from the occurrence of these pigments in sediments continuing essentially all stages of in situ chlorophyll diagenesis (cf. Baker and Louda, 1983). That is, their presence is not regulated by the in situ diagenetic continuum. Thus, the highly dealkylated Cu and Ni etioporphyrins represent an 'allochthonous' background over which 'autochthonous' (viz. marine produced) chlorophyll derivatives are deposited and are undergoing in situ diagenesis.
Project(s):
Deep Sea Drilling Project (DSDP)
Coverage:
Median Latitude: 29.652770 * Median Longitude: -65.642917 * South-bound Latitude: 22.959300 * West-bound Longitude: -120.757800 * North-bound Latitude: 42.099000 * East-bound Longitude: 143.929000
Date/Time Start: 1975-05-30T00:00:00 * Date/Time End: 1979-01-03T00:00:00
Event(s):
42-380A * Latitude: 42.099000 * Longitude: 29.613700 * Date/Time: 1975-05-30T00:00:00 * Elevation: -2107.0 m * Penetration: 1083 m * Recovery: 422 m * Location: Black Sea * Campaign: Leg42 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 78 cores; 727.5 m cored; 19 m drilled; 58 % recovery
42-381 * Latitude: 41.670800 * Longitude: 29.416000 * Date/Time: 1975-06-07T00:00:00 * Elevation: -1728.0 m * Penetration: 503.5 m * Recovery: 268.7 m * Location: Black Sea * Campaign: Leg42 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 53 cores; 494 m cored; 9.5 m drilled; 54.4 % recovery
43-387 * Latitude: 32.320000 * Longitude: -67.666700 * Date/Time: 1975-08-01T00:00:00 * Elevation: -5117.0 m * Penetration: 794.5 m * Recovery: 177.2 m * Location: North Atlantic/CONT RISE * Campaign: Leg43 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 50 cores; 468 m cored; 0 m drilled; 37.9 % 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
- Baker, EW; Louda, W (1984): (Table 2) Mass spectra of highly dealkylated metallo-(Cu,Ni)-etioporphyrins isolated from DSDP holes samples. https://doi.org/10.1594/PANGAEA.763355
- Baker, EW; Louda, W (1984): (Table 1) Mass spectra of free-base, nickel and nicke-plus-copper porphyrins isolated from DSDP Leg 64 holes. https://doi.org/10.1594/PANGAEA.763352