In the upcoming months Geokinetics will be performing activities relative to the extensive exploration of the Marcellus Shale Region affecting parts of Bradford County spilling over into Wyoming, Susquehanna and Sullivan Counties. What is Marcellus Shale? The Marcellus Shale, also referred to as the Marcellus Formation, is a Middle Devonian-age black, low density, carbonaceous (organic rich) shale that occurs in the subsurface beneath much of Ohio, West Virginia, Pennsylvania and New York and small parts of Maryland, Kentucky, Tennessee, and Virginia. Which holds one of the largest gas reserves in the World.   Frequently Asked Questions about Related Seismic Operations in Pennsylvania