Seth Roye

Croton on Hudson

Block of Manhattan Schist

Manhattan schist strings together New York's history from prehistory to the skyscraper age. It is was excavated during the construction of subways, cut into blocks and used to make buildings from Belvedere Castel to City College. The undisturbed schist serves as the foundation of the city's skyscrapers; the skyline is a diagram of the depth of this bedrock material. The island itself is substantially a bump of manhattan schist bedrock, carved by the most recent glacial epochs.