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Trace Fossils From The Shawangunk Formation In The Hudson Valley Indicate An Estuarine Depositional Environment, Howard R. Feldman, Alex Bartholemew, Carlton E. Brett, Matthew B. Vrazo, Marcelo Rosensaft

Lander College for Women - The Anna Ruth and Mark Hasten School Publications and Research

The Middle Silurian Shawangunk Formation crops out in the lower Hudson Valley and extends toward the southwest into New Jersey and Pennsylvania. It reaches a maximum thickness around Guymard (1,400 ft.; 400m) and gradually thins toward the northeast, pinching out near Binnewater, New York. The formation consists of gray conglomerate, quartz arenite, and minor shale. Worm burrows, Arthrophycus, Skolithos, Planolites?, and a bilobed resting trace have been found at different stratigraphic horizons in the Shawangunk Formation. All traces are associated with a finer, sandy matrix and/or hematite-rich interval rather than a coarse, pebbly quartz sandstone lithology dominant in the bulk …