Articles | Volume 20, issue 7
Research article
12 Jul 2016
Research article |  | 12 Jul 2016

Redox controls on methane formation, migration and fate in shallow aquifers

Pauline Humez, Bernhard Mayer, Michael Nightingale, Veith Becker, Andrew Kingston, Stephen Taylor, Guy Bayegnak, Romain Millot, and Wolfram Kloppmann

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Cited articles

Alberta Research Council: Round-table conference on groundwater in Alberta, Alberta Research Council, Edmonton, Earth Sciences Report 56-1, 84 pp., 1956.
Appelo, C. A. J. and Postma, D.: Geochemistry, groundwater and pollution, 2nd Edn., Balkema, Leiden, 2005.
Bachu, S.: Flow systems in the Alberta Basin: Patterns, types and driving mechanisms, B. Can. Petrol. Geol., 47, 455-474, 1999.
Baldassare, F. J., McCaffrey, M. A., and Harper, J. A.: A geochemical context for stray gas investigations in the northern Appalachian Basin: implications of analyses of natural gases from Neogene-through Devonian-age strata, AAPG Bulletin, 98, 341–372, 2014.
Barker, J. F. and Fritz, P.: The Occurrence and Origin of Methane in Some Groundwater-Flow Systems, Can. J. Earth Sci., 18, 1802–1816, 1981a.
Short summary
Development of unconventional energy resources if often associated with public concerns regarding potential contamination of shallow groundwater due to methane leakage. We combined chemical and isotopic analyses of gas and water samples obtained from shallow aquifers in Alberta (Canada) to assess baseline methane sources and found that > 67 % of the samples contained biogenic methane formed in situ in the aquifers. There was no evidence of deep thermogenic methane migration into shallow aquifers.