Standard petrographic analyses of thin sections from samples from New York City Water Tunnel #3

This dataset includes standard petrographic analyses of thin sections created from rock samples excavated during the construction of New York City water tunnel #3 (Chief collector: Scott Chesman). These samples are essential for the investigation of New York City’s geology, as well as the tectonic processes that shaped the Appalachian region. The dataset contains volume percents for quartz, plagioclase, biotite, garnet, pyroxene, hornblende, and opaque minerals of rare high grade-granulitic samples from the Brooklyn and Queens sections of the tunnel.

本数据集包含纽约市第三供水隧道（New York City water tunnel #3）施工期间采掘的岩石样品所制备的标准岩石薄片（thin section）的岩石学分析数据，首席采集者为斯科特·切斯曼（Scott Chesman）。此类样品对于探究纽约市地质特征以及塑造阿巴拉契亚地区的构造过程具有重要意义。数据集涵盖该隧道布鲁克林段与皇后区段产出的罕见高级变质麻粒岩（granulitic）样品中石英、斜长石、黑云母、石榴子石、辉石、角闪石及不透明矿物的体积占比数据。