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Pacific Coastal & Marine Science Center

Monterey Bay Studies


Monterey Bay Studies

 

Hydrocarbons Associated with Fluid Venting Process in Monterey Bay, California

Carbon Isotopic Compositions
of Methane and Carbon Dioxide in Sediment Gas

Most sample sites fall outside typical boundaries, likely because of carbon recycling of light carbon between methane and carbon dioxide by different bacterial populations. An alternative explanation for the isotopically heavy methane (thermogenic methane?) is the oxidation of a small pool of methane which leaves isotopically heavy methane behind.

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