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Environmental concerns regarding the potential for drinking water contamination in shallow aquifers have accompanied unconventional energy development in the northern Appalachian Basin. These activities have also raised several critical questions about the hydrogeological parameters that control the naturally occurring presence and migration of hydrocarbon gases in shallow aquifers within petroliferous...
The radiogenic noble gas isotope composition (e.g., 4He*, 21Ne*, 40Ar*, where * denotes the radiogenic component) of crustal mineral grains was investigated to evaluate their utility as a geochemical tracer for characterizing subsurface processes and conditions of crustal fluid migration, specifically within black shales. Because the production of radiogenic noble gases can be predicted by measuring...
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