Marple, Ronald T., and James D. Hurd. “LiDAR and Other Evidence for the Southwest Continuation and Late Quaternary Reactivation of the Norumbega Fault System and a Cross-Cutting Structure Near Biddeford, Maine, USA”. Atlantic Geoscience 55 (October 28, 2019): 323–359. Accessed September 30, 2022. https://journals.lib.unb.ca/index.php/ag/article/view/28952.