The maps that show the extent of the Marcellus formation show the western 1/3 of Bedford and Blair counties as having the formation, absence of the formation along the ridge tops, and the presence of the formation again on the eastern side of the mountains in eastern Bedford, Fulton and Huntington Counties. I assume that the folding that took place to form the mountains, with subsequent erosion of the ridge tops, resulted in this ridgetop band where the Marcellus is not present. If that is true, is the formation relatively flat where it does exist, or was it folded in western Bedford and Blair counties? If it was folded, would it be fair to assume that it could be tapped using a modified vertical well, with the well bore following the dip of the formation? Would this unique geologic setting positively or negatively impact well production in these "west of the ridge" locations?
I hope there is a geologist out there that understands how the deposit was formed and then impacted by the folding of the mountains. Any informed input would be greatly appreciated.