Barr, Sandra M., and James K. Mortensen. “Neoproterozoic U–Pb (zircon) and ⁴⁰Ar/³⁹Ar (muscovite) Ages from Granitic Pegmatite Clasts, Basal Ross Island Formation, Grand Manan Island, New Brunswick, Canada”. Atlantic Geoscience 55 (July 28, 2019): 265–274. Accessed September 30, 2022. https://journals.lib.unb.ca/index.php/ag/article/view/28889.