Mathematics – Logic
Scientific paper
May 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002georl..29j..63w&link_type=abstract
Geophysical Research Letters, Volume 29, Issue 10, pp. 63-1, CiteID 1423, DOI 10.1029/2001GL014013
Mathematics
Logic
8
Oceanography: Biological And Chemical: Geochemistry, Oceanography: Biological And Chemical: Gases, Oceanography: Biological And Chemical: Radioactivity And Radioisotopes, Marine Geology And Geophysics: Marine Sediments-Processes And Transport
Scientific paper
In samples of pure natural gas hydrates from Hydrate Ridge, Cascadia Margin, virtually no helium and neon components are present providing evidence that the light noble gases are not incorporated into the structure of natural methane hydrates. In contrast, the hydrates contain significant amounts of argon, krypton and xenon. These gases show a distinct fractionation pattern, with the heavier ones preferentially incorporated into the gas hydrate structure. The hydrate methane is devoid of 14C indicating that there is no contribution of a recent (14C-active) organic carbon reservoir to the hydrate carbon pool. On the basis of the δ13C and δ2H signature, it appears that microbial CO2-reduction is the dominant CH4 production pathway.
Aeschbach-Hertig Werner
Holocher Johannes
Kipfer Rolf
Levin Ingeborg
Poss Christian
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