Marcellus, Utica, and now…Upper Devonian?!

You’ve heard of the Marcellus Shale. You’ve also heard of the Utica Shale. Now get ready to hear about another geologic formation that may “rock” the energy world: the Upper Devonian, a group of shale and sandstone layers that sit above the Marcellus and the Utica. Range Resources said on Tuesday there’s a lot of natural gas trapped in the Upper Devonian layers—so much so that in Pennsylvania, the Upper Devonian may contain as much gas as the Marcellus.

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