Marcellus Shale Assessment Map
![Image shows a map of the Eastern United States with the boundaries of the Marcellus Shale superimposed](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/full_width/public/thumbnails/image/den19-0060_fig01.jpg?itok=bh46YNiJ)
Detailed Description
The assessment unit map for the Marcellus Shale within the Appalachian Basin. Although it occupies similar areas as the Point Pleasant-Utica Shale, the Marcellus is much younger, having formed in the Devonian age.
Sources/Usage
Public Domain.