Feltville Formation, Geological formation in New Jersey, United States
Feltville Formation is a rock layer that extends across New Jersey, Pennsylvania, and New York. It consists of red, gray, and white sandstone mixed with siltstone and mudstone deposits from the early Jurassic period.
It was named after the Deserted Village of Feltville in New Jersey, where paleontologist Paul E. Olsen first formally described it. This description became the reference point for understanding this rock layer across the three-state region.
Scientists study the formation's fossil remains, which include Semionotus fish, reptile tracks, dinosaur prints, and preserved plant structures from the early Jurassic period.
Information about this formation is found in scientific publications and geological databases for researchers and geology enthusiasts. These resources help people learn about the regional rock layers and their characteristics.
The rock layers show a striking pattern of red and gray bands that switch between dry and wet periods with ancient lakes from about 199 million years ago. These shifts allow geologists to read the climate changes that happened back then.
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