| Needmore Formation | |
|---|---|
| Stratigraphic range: Emsian[1] | |
| Type | sedimentary |
| Underlies | Marcellus Shale and Millboro Shale |
| Overlies | Oriskany Formation |
| Lithology | |
| Primary | shale |
| Location | |
| Region | Appalachian Mountains |
| Country | United States |
| Extent | Maryland, Pennsylvania, Virginia, and West Virginia |
| Type section | |
| Named for | Needmore, Pennsylvania |
| Named by | Willard and Cleaves, 1939[2] |
The Devonian Needmore Formation or Needmore Shale is a mapped bedrock unit in Pennsylvania, Maryland, Virginia, and West Virginia.