The Monmouth Group or Matawan Group is a major Late Cretaceous-aged geologic group in the eastern United States, known from New Jersey, Pennsylvania, New York, Delaware, and Maryland.[1] It comprises a number of geological formations dating from the Santonian to nearly the end of the Maastrichtian, deposited in nearshore environments off the coast of eastern Appalachia, including deltaic and marine ecosystems.[2] It is highly fossiliferous and preserves a diverse array of fossils, including some of the most prominent dinosaur-bearing deposits of eastern North America.
The following formations are included, from youngest to oldest:[2][3][1]
- New Egypt Formation (=Tinton Formation) (youngest, late Maastrichtian)
- Red Bank Formation[4]
- Navesink Formation
- Severn Formation[5]
- Mount Laurel Formation
- Wenonah Formation
- Marshalltown Formation (=Matawan Formation)
- Englishtown Formation (=Matawan Formation)
- Woodbury Formation
- Merchantville Formation (=Matawan Formation) (oldest, late Santonian to early Campanian)
See also
- List of fossiliferous stratigraphic units in New Jersey
- Paleontology in New Jersey
- Black Creek Group & Selma Group, two other similarly-aged geologic groups from eastern North America
References
- ^ a b "Geolex — Monmouth publications". ngmdb.usgs.gov. Retrieved 2024-11-12.
- ^ a b "PBDB". Paleobiology Database. Retrieved 2024-11-12.
- ^ "Coastal Plain Rock Units (Stratigraphic Chart) | The Delaware Geological Survey". www.dgs.udel.edu. Retrieved 2024-11-12.
- ^ "Geolex — RedBank publications". ngmdb.usgs.gov. Retrieved 2024-11-12.
- ^ "Geolex — Severn publications". ngmdb.usgs.gov. Retrieved 2024-11-12.
- Various Contributors to the Paleobiology Database. "Fossilworks: Gateway to the Paleobiology Database". Retrieved 17 December 2021.
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