Mathematics – Logic
Scientific paper
Dec 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006georl..3324603k&link_type=abstract
Geophysical Research Letters, Volume 33, Issue 24, CiteID L24603
Mathematics
Logic
9
Cryosphere: Clathrate, Marine Geology And Geophysics: Gas And Hydrate Systems, Oceanography: Biological And Chemical: Gases
Scientific paper
We report the field observation of hydrate deposits of different crystal structures in the same cores of a mud volcano in the Kukuy Canyon. We link those deposits to chemical fractionation during gas hydrate crystallization. Gas composition and crystallographic analyses of hydrate samples reveal involvement of two distinct gas source types in gas hydrate formation at present or in the past: microbial (methane) and thermogenic (methane and ethane) gas types. The clathrate structure II, observed for the first time in fresh water sediments, is believed to be formed by higher mixing of thermogenic gas.
Hachikubo Akihiro
Khlystov Oleg
Kida Masato
Krylov Alexey
Minami Hirotsugu
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