Barr, Sandra M., James K. Mortensen, Chris E. White, and Richard M. Friedman. “Age and Petrology of the Machias Seal Island Quartz Monzodiorite, the Southernmost Rocks in New Brunswick, Canada”. Atlantic Geoscience 46 (October 14, 2010): Pages 155 – 172. Accessed April 24, 2024. https://journals.lib.unb.ca/index.php/ag/article/view/atlgeol.2010.009.