Coexistence of structure I and II gas hydrates in Lake Baikal suggesting gas sources from microbial and thermogenic origin

Masato Kida, Oleg Khlystov, Tamara Zemskaya, Nobuo Takahashi, Hirotsugu Minami, Hirotoshi Sakagami, Alexey Krylov, Akihiro Hachikubo, Satoshi Yamashita, Hitoshi Shoji, Jeffrey Poort, Lieven Naudts

Результат исследований: Научные публикации в периодических изданияхстатья

64 Цитирования (Scopus)

Аннотация

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.

Язык оригиналаанглийский
Номер статьиL24603
ЖурналGeophysical Research Letters
Том33
Номер выпуска24
DOI
СостояниеОпубликовано - 28 дек 2006

Предметные области Scopus

  • Геофизика
  • Планетоведение и науки о земле (все)

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  • Цитировать

    Kida, M., Khlystov, O., Zemskaya, T., Takahashi, N., Minami, H., Sakagami, H., Krylov, A., Hachikubo, A., Yamashita, S., Shoji, H., Poort, J., & Naudts, L. (2006). Coexistence of structure I and II gas hydrates in Lake Baikal suggesting gas sources from microbial and thermogenic origin. Geophysical Research Letters, 33(24), [L24603]. https://doi.org/10.1029/2006GL028296