Gas Hydrate Carbonate Formation and Anaerobic Oxidation of Methane

Gas Hydrate Carbonate Formation and Anaerobic Oxidation of Methane 

Authigenic carbonates are common features at seafloor seepage sites where fluids enriched in methane or oversaturated in bicarbonate escape from seafloor. Various investigators have described a particularly 

Such gas hydrate carbonates are also called clathrites and form archives in which geochemical processes of clathrate and clathrite formation is well documented (Teichert et al. 2005b). Their carbon isotope values range from -40%o to -54%o PDB, identifying methane as the dominant carbon source (Fig. 14.21). Bohrmann et al. (1998) analyzed mixtures of Mg-calcite and aragonite and showed that their oxygen isotopic composi- 

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