Thermal alteration experiments on organic matter in recent marine sediment--I. Pigments

Details Thermal alteration experiments on organic matter in recent marine sediment--I. Pigments Thermal alteration experiments on organic matter in recent marine sediment--I. Pigments

Feb 1975

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975gecoa..39..173i&link_type=abstract

Geochimica et Cosmochimica Acta, vol. 39, Issue 2, pp.173-185

Physics

1

Scientific paper

Sediment from Tanner Basin, located at the outer continental shelf off southern California, was analyzed for photosynthetic pigments and their derivatives, namely carotenes and chlorins. Samples of the sediment were also exposed to raised temperatures (65°, 100°, 150°C) for various periods of time (1 week, 1 month, 2 months). Analysis of the heat-treated sediment revealed the presence of -ionene and 2,6-dimethylnaphthalene, thermal-degradation products of -carotene. Chlorins were converted to nickel porphyrins of both DPEP and etio series. Possible mechanisms and geochemical significance of these transformations are presented.

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