Brownstone Quarrying Along the Delaware

Professional geologist J. Mark Zdepski will deliver a presentation with a blend of history, geology, and information on the industrial processing of quarrying along the Delaware in the Stockton/Raven Rock region. The quarrying of Triassic-aged brown sandstones along the Delaware River began in the colonial period, but during and after the construction of the canals in the 1830s, the industry boomed. The construction of the Belvidere and Delaware line of the Pennsylvania Railroad contributed to the further growth of the quarry industry, particularly in Stockton/Prallsville (NJ) and the surrounding area of Raven Rock, Lumberville, and Centre Bridge (PA). The Stockton area quarries provided foundation stone for the State House and for the Pennsylvania Railroad viaduct in New Brunswick. Zdepski will also share historical photographs depicting the actual conditions of the quarrymen working sites and mining techniques. Mr. Zdepskis grandfather worked in the Raven Rock quarry until it closed. Many of the sites are now public open space and Zdepski will let you know which of these are accessible. Hybrid event: In person at the North County Branch Library, 65 Halstead St., Clinton, NJ or join us on Zoom. Registered participants will receive a link to join via Zoom. We will also send a reminder along with Zoom link before the program starts. https://www.sierraclub.org/new-jersey/hunterdon-warren

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