Mahantango Formation
The Devonian Mahantango Formation is a mapped bedrock unit in Pennsylvania, West Virginia, and Maryland. It is named for the North branch of the Mahantango Creek in Perry and Juniata counties in Pennsylvania. It is a member of the Hamilton Group, along with the underlying the Marcellus Formation Shale. South of Tuscarora Mountain in south central Pennsylvania, the lower members of this unit were also mapped as the Montebello Formation. Details of the type section and of stratigraphic nomenclature for this unit as used by the U.S. Geological Survey are available on-line at the National Geologic Map Database.
| Mahantango Formation | |
|---|---|
| Stratigraphic range: Givetian, ~ | |
Outcrop of the Mahantango on Rt. 522, Fulton County, Pennsylvania | |
| Type | Geological formation |
| Unit of | Hamilton Group |
| Sub-units | See: Description |
| Underlies | Harrell Shale and West Falls Formation |
| Overlies | Marcellus Formation |
| Lithology | |
| Primary | Shale |
| Other | Limestone, Siltstone |
| Location | |
| Region | Appalachian Basin of eastern North America |
| Extent | Maryland, Ohio, Pennsylvania, Virginia, and West Virginia |
| Type section | |
| Named for | Mahantango Creek |
This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.