Passaic Formation

Passaic Formation
Stratigraphic range: Late Triassic, 219–201.7 Ma
Exposure of Passaic Formation sandstone on Goffle Hill in Hawthorne, New Jersey.
TypeGeological formation
Unit ofNewark Supergroup
UnderliesOrange Mountain Basalt
OverliesLockatong Formation
Thicknessmaximum of over 19,685 feet (6,000 m)[1]
Lithology
PrimarySiltstone, Mudstone, Shale
OtherSandstone, Conglomerate
Location
RegionNewark Basin of
Eastern North America Rift Basins
Extent~200 miles (320 km) in
New York, New Jersey,
and Pennsylvania
Type section
Named forPassaic, New Jersey[1]
Named byPaul E. Olsen, 1980[1]

The Passaic Formation is a mapped bedrock unit in Pennsylvania, New Jersey, and New York. It was previously known as the Brunswick Formation since it was first described in the vicinity of New Brunswick, New Jersey. It is now named for the city of Passaic, New Jersey, which is near where its type section was described by paleontologist Paul E. Olsen.[1]

  1. ^ a b c d Olsen, P.E., 1980. The Latest Triassic and Early Jurassic Formations of the Newark Basin (Eastern North America, Newark Supergroup): Stratigraphy, Structure, and Correlation. New Jersey Academy of Science Bulletin, v. 25, no. 2, p. 25-51.