Ebert, James R., and Damon K. Matteson. “The Lac Au Renard Tephra Cluster: A Record of Lochkovian (Lower Devonian) Volcanism in the Indian Point Formation, Gaspe Peninsula, Quebec, Canada”. Atlantic Geoscience 55 (November 9, 2019): 361–378. Accessed October 5, 2022. https://journals.lib.unb.ca/index.php/ag/article/view/28916.