| Raritan Formation | |
|---|---|
| Stratigraphic range: Turonian | |
 Outcrop of the Raritan Formation near Rocky Point above Round Bay, Severn River, Anne Arundel County, Maryland | |
| Type | Sedimentary |
| Unit of | Potomac Group |
| Sub-units | Raritan Fire Clay, Farrington Sand Member, Woodbridge Clay Member, Sayreville Sand Member, South Amboy Fire Clay Member |
| Underlies | Magothy Formation |
| Overlies | Newark Supergroup, Patapsco Formation |
| Location | |
| Region | New Jersey, New York, Maryland |
| Country | USA |
| Type section | |
| Named for | Raritan Bay |
| Named by | William Bullock Clark (1893)[1] |
The Raritan Formation is a Cretaceous (Turonian) sedimentary geologic formation of the Atlantic Coastal Plain.