McLeod, M. J., A. A. Ruitenberg, and T. E. Krogh. 1992. “Geology and U-Pb Geochronology of the Annidale Group, Southern New Brunswick: Lower Ordovician Volcanic and Sedimentary Rocks Formed Near the Southeastern Margin of Lapetus Ocean”. Atlantic Geoscience 28 (2). https://doi.org/10.4138/1860.