Marcellus shale in central New York showing Cherry Valley limestone
![(grey-colored rock) Cherry Valley shale](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/full_width/public/thumbnails/image/shalebig.jpg?itok=PxlGJZT4)
Detailed Description
Exposure of the Marcellus shale in central New York showing the Cherry Valley limestone (grey-colored rock) between the Union Springs and Oatka Creek shales of the Marcellus.
Sources/Usage
Public Domain.