Manhattan Island, New York City drill cores

Item Description

Preserved specimens of urban geology, especially New York City, are just not that common. This very rare 3-piece set of Manhattan Island drill cores consists of two cores from the Fordham Gneiss ; and one core of the Manhattan Schist. They came to us in a wooden presentation and preservation box marked "SEI - Seismic Exchange, Inc." and from a deceased local economic geologist's collection. Value of such rare NYC artifacts is hard to say....but they are certainly interesting! The largest is the size shown, but the others are similar in size.