A structural study of western Anticosti Island, St. Lawrence platform, Quebec: a fracture analysis that integrates surface and subsurface structural data

A structural analysis of western Anticosti Island, Quebec, reveals that fracture systems and faults in the region are influenced by multiple tectonic events, including Taconian, Acadian, Jurassic, and Quaternary deformations. The study identifies four primary fracture sets—two orthogonal (NS-EW) potentially linked to Early Acadian extensional stresses, and two others (N40–70° and N135–165°) possibly formed during the Middle Devonian Acadian orogeny or later Jurassic tectonics. Irregular fractures may result from post-glacial isostatic rebound. The research integrates field data, remote sensing, and seismic reflection to assess how these structures influenced petroleum migration on the Anticosti Platform, suggesting that Taconian and Early Acadian faults played a significant role in reservoir development.

Bordet, E., Malo, M., & Kirkwood, D. (2010). A structural study of western Anticosti Island, St. Lawrence platform, Quebec: a fracture analysis that integrates surface and subsurface structural data. Bulletin of Canadian Petroleum Geology, 58(1), 36–55. https://doi.org/10.2113/gscpgbull.58.1.36