* Methane and other gases occur in shallow aquifers and formations above the Marcellus, and predate Marcellus drilling: ”A geochemical context for stray gas investigations in the northern Appalachian Basin: Implications of analyses of natural gases from Neogene-through Devonian-age strata”, Fred J. Baldassare, AAPG Bull. V. 98, No. 2 (February 2014), P. 341–372. | * Methane and other gases occur in shallow aquifers and formations above the Marcellus, and predate Marcellus drilling: ”A geochemical context for stray gas investigations in the northern Appalachian Basin: Implications of analyses of natural gases from Neogene-through Devonian-age strata”, Fred J. Baldassare, AAPG Bull. V. 98, No. 2 (February 2014), P. 341–372. |