Limestone Outcrop at Hoyt Quarry, New York

A sign here says, "This quarry is the geological reference locality [that is, the type section] for the Hoyt Limestone, a rock unit that extends around the southeast side of the Adirondacks. A number of Late Cambrian-age fossils are found only here and in Poughkeepsie, New York. Scientists have observed such features as mud cracks and ripple marks in the quarry, showing that this limestone was a product of very shallow seas." The quarry has been inactive for many years, and the rocks have weathered. Ripples are apparent in the middle, and mudcracks appear in the lowermost beds exposed here.