Setters Formation
| Setters Formation | |
|---|---|
| Stratigraphic range: late Precambrian | |
Outcrop of Setters Formation along Marriottsville Road, Baltimore County | |
| Type | metamorphic |
| Unit of | Glenarm Group |
| Underlies | Cockeysville Marble |
| Overlies | Baltimore Gneiss |
| Lithology | |
| Primary | Mica-schist |
| Other | Muscovite-gneiss and quartzite |
| Location | |
| Region | Piedmont of eastern North America |
| Country | United States |
| Extent | Maryland, Pennsylvania, Delaware |
The Setters Formation is a geological formation that is located in Maryland, Pennsylvania, and Delaware in the United States. The formation is metamorphic and consists of a complex suite of schist, gneiss, and quartzite.
It is the lowest unit of the Glenarm Group (or Supergroup). The overlying formations of the group are the Cockeysville Marble and the Wissahickon Formation.