Navesink Formation
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Unit ofMonmouth Group
UnderliesSandy Hook Formation, New Egypt Formation
OverliesMount Laurel Formation
| Navesink Formation | |
|---|---|
| Stratigraphic range: Maastrichtian | |
| Type | Geological formation |
| Unit of | Monmouth Group |
| Underlies | Sandy Hook Formation, New Egypt Formation |
| Overlies | Mount Laurel Formation |
| Location | |
| Coordinates | 39°48′N 75°12′W / 39.8°N 75.2°W |
| Approximate paleocoordinates | 40°12′N 50°18′W / 40.2°N 50.3°W |
| Region | New Jersey |
| Country | United States |
| Type section | |
| Named for | Navesink, New Jersey |
The Navesink Formation is a 66 to 70 mya greensand glauconitic marl and sand geological formation in New Jersey. It is known for its Cretaceous period fossil shell beds and dinosaur bones.[1]
The Navesink Formation, named after Navesink, New Jersey, is typically found above the Mount Laurel Formation and under the Red Bank Formation. There is a 5 mya gap between the Navesink and Mount Laurel Formations.[2] The Navesink varies in depth from 45 feet (14 m) to 65 feet (20 m) across its range from Sandy Hook to Pennsville.[3][4]
The Navesink has the highest radon gas potential of the New Jersey geologic[5] formations.