An inverted Archean succession at Rainy Lake, Ontario

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, Coutchichin...

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Bibliographic Details
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
Description
Summary: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.

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