Interactive Oil & Gas Shale Map

Marcellus Shale, also referred to as "Marcellus Formation", is a low density, organic-rich shale in the subsurface of the earth beneath the states of Ohio, West Virginia, Pennsylvania, and New York - as well as in small portions of Maryland, Kentucky, Tennessee, and Virginia.

Utica Shale Key:

Immature
Oil
Wet gas
Dry gas
Overmature

Source: AAPG, USGS, company presentations, Scotia Waterous

Source: Geology.com

Marcellus Shale
Marcellus Shale Fairway
Utica Shale Fairway