Monmouth Group

Monmouth Group
Stratigraphic range: Late Santonian to late Maastrichtian,
TypeGroup
Sub-unitsSee text
UnderliesRancocas Group
OverliesMagothy Formation
Lithology
PrimaryMarl, glauconite
Location
RegionNew Jersey, Pennsylvania, New York, Delaware, Maryland
CountryUnited States

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]

See also

References

  1. ^ a b "Geolex — Monmouth publications". ngmdb.usgs.gov. Retrieved 2024-11-12.
  2. ^ a b "PBDB". Paleobiology Database. Retrieved 2024-11-12.
  3. ^ "Coastal Plain Rock Units (Stratigraphic Chart) | The Delaware Geological Survey". www.dgs.udel.edu. Retrieved 2024-11-12.
  4. ^ "Geolex — RedBank publications". ngmdb.usgs.gov. Retrieved 2024-11-12.
  5. ^ "Geolex — Severn publications". ngmdb.usgs.gov. Retrieved 2024-11-12.
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