Title: Characteristics of Authigenic Carbonate Chimneys in Shenhu Area, Northern South China Sea: Recorders of Hydrocarbon-enriched Fluid Activity
Abstract: Authigenic carbonates often occur in continental margin with fluids venting and/or gas hydrate dissociation. Authigenic carbonates found in Shenhu area, northern South China Sea, are in the form of chimney, and mainly comprise ankerite, aragonite and calcite. Carbon and oxygen stable isotope studies show that δ 13 C _ PDB ranges from -40.18‰ to -38.69‰ , and δ 18 O _ PDB varies between 3.75‰ and 4.31‰. The typical isotope ratios suggest that these carbonate chimneys are derived from anaerobic methane oxidation and preticipated during methane-enriched fluid venting.
Publication Year: 2006
Publication Date: 2006-01-01
Language: en
Type: article
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Cited By Count: 16
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