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TitleSeepage of biogenic natural gas in the intermontane belt of the Canadian Cordillera
AuthorOsadetz, K G; Evenchick, C A; Ferri, F; Mayer, B; Snowdon, L RORCID logo
SourceBulletin of Canadian Petroleum Geology vol. 55, no. 4, 2007 p. 337-341,
Alt SeriesEarth Sciences Sector, Contribution Series 20070526
Mediapaper; on-line; digital
File formatpdf
ProvinceBritish Columbia
AreaCordillera; Tatogga Lake
Lat/Long WENS-130.5000 -130.0000 57.7500 57.5000
Subjectsfossil fuels; hydrocarbons; hydrocarbon potential; gas; biogenic gas
Illustrationsphotographs; tables; plots
ProgramSecure Canadian Energy Supply
Released2007 12 01
AbstractThe owners of Tatogga Lake Resort informed geologists of persistent flammable natural gas seepage into Tatogga Lake, British Columbia. The gas seep was sampled from anomalously unfrozen openings (UTM zone 9, 440378/6396983, NAD27) when the ice cover was generally 15 to 20 cm thick. Samples of this gas are composed of methane (98.2 %) and carbon dioxide (1.8 %). The stable carbon isotopic composition of both gases is consistent with biogenic generation and possibly slight microbial oxidation. The biogenic origin of this natural petroleum seepage suggests that the gas is not associated with crude oil stains and thermogenic petroleum systems in the Bowser Basin and underlying rocks. The seepage source strata and economic potential remain unidentified and obscured by its underwater occurrence.

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