Navesink Formation

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Navesink Formation
Stratigraphic range: Maastrichtian
Type Geological formation
Underlies Red Bank Formation
Overlies Mount Laurel Formation
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 it 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.


There are several locations where the Navesink formation is visible including Poricy Park in Middletown, New Jersey which has several exposures along Poricy Brook. There is also exposure in Big Brook Park in Marlboro, NJ.



  1. ^ Gallagher, William B. (1997). When dinosaurs roamed New Jersey. Rutgers University Press. p. 122. ISBN 978-0-8135-2349-1. 
  2. ^ Hernandez, John C.; Kenneth G. Miller; Mark Feigenson (2000). "87Sr/86Sr dating of Upper Cretaceous (Campanian and Santonian) depositional sequences: Bass River and Ancora, NJ ODP Leg 174 AX". Department of Geological Sciences, Rutgers University. Retrieved 2009-04-21. 
  3. ^ Bennington, J Bret (October 18, 2003). "Paleontology and Sequence Stratigraphy of the Upper Cretaceous Navesink Formation, New Jersey" (PDF). Retrieved 2009-04-21. 
  4. ^ "Late Cretaceous Stratigraphic Units of the Coastal Plain". United States Geological Survey. July 22, 2003. Retrieved 2009-04-19. 
  5. ^ Sugarman, Peter J. (1999). "Radon Potential of New Jersey Coastal Plain Formations" (PDF). Retrieved 2009-04-21. 
  6. ^ "Table 5.1," in Weishampel, et al. (2004). Page 114.
  7. ^ "Table 20.1," in Weishampel, et al. (2004). Page 442.
  8. ^ "Table 20.1," in Weishampel, et al. (2004). Page 441.