Hydrothermal petroleum at the seafloor and organic matter alteration in sediments of Middle Valley, Northern Juan de Fuca Ridge

作者: B.R.T. Simoneit , W.D. Goodfellow , J.M. Franklin

DOI: 10.1016/0883-2927(92)90041-Z

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摘要: Abstract Sediments from high heat flow areas of Middle Valley, Northern Juan de Fuca Ridge, contain traces bitumens with insignificant amounts thermogenic components and mainly lipid material which has experienced accelerated diagenesis. These sediments have been exposed to mild hydrothermal conditions (50–120°C), based on their bitumen compositions. The in a barite alteration products. aliphatic fraction represents the mildly transformed immature matter major polynuclear aromatic hydrocarbons are temperature constituents (>300°C). 14C age this is about 29 000 aBP, reflecting rapid organic carbon cycling.

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