| Setters Formation | |
| Type: | metamorphic |
| Prilithology: | Mica-schist |
| Otherlithology: | Muscovite-gneiss and quartzite |
| Region: | Piedmont of eastern North America |
| Unitof: | Glenarm Group |
| Extent: | Maryland, Pennsylvania, Delaware |
| Age: | late Precambrian |
| Underlies: | Cockeysville Marble |
| Overlies: | Baltimore Gneiss |
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.[1]
