An inverted Archean succession at Rainy Lake, Ontario

• Published in: Canadian Journal of Earth Sciences
• Main Authors: Poulsen, K. Howard, Borradaile, Graham J., Kehlenbeck, Manfred M.
• Format: Article in Journal/Newspaper
• Language: English
• Published: Canadian Science Publishing 1980
• Subjects: General Earth and Planetary Sciences; Keewatin
• Online Access: http://dx.doi.org/10.1139/e80-143; http://www.nrcresearchpress.com/doi/pdf/10.1139/e80-143

Interpretation of new structural data, particularly application of the concept of structural facing, demonstrates that part of the Archean sequence at Rainy Lake was structurally over-turned prior to the development of dominant (F 2 ) folds. This structural revision indicates that, here, Coutchiching metasediments are younger than Keewatin volcanic rocks. Fold-nappe or thrust-nappe tectonics may have been responsible for the pre-F 2 inversion of the stratigraphic sequence.