Great Slave Lake shear zone, NW Canada; mylonitic record of early Proterozoic continental convergence, collision and indentation

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doi: 10.1016/0191-8141(92)90039-Y
Authors:Hanmer, Simon; Bowring, Samuel A.; van Breemen, Otto; Parrish, Randall R.
Author Affiliations:Primary:
Geol. Surv. Can., Cont. Geosci. Div., Ottawa, ON, Canada
Other:
Mass. Inst. Technol., United States
Volume Title:Journal of Structural Geology
Source:Journal of Structural Geology, 14(7), p.757-773. Publisher: Pergamon, Oxford-New York, International. ISSN: 0191-8141
Publication Date:1992
Note:In English. 76 refs.; illus. incl. geol. sketch map
Summary:This is an excellent example of the kinematic, magmatic and thermal evolution of a crustal-scale shear zone associated with a collisional continental boundary. It is a 25 km wide corridor of granulite to lower greenschist facies mylonites and cataclastic fault rocks developed in the deep-seated parts of an early Proterozoic magmatic arc, constructed on the upper (Rae) plate at the contact between the Archaean Slave and Rae continents. The rocks of the Great Slave Lake shear zone, the Thelon magmatic arc and the Taltson magmatic zone are all components of the same magmatic arc, but their geological histories reflect different aspects of the continental interaction. [R.E.S.]
Subjects:Facies; Faults; Greenschist facies; Metamorphic rocks; Mylonites; Paleoproterozoic; Plate collision; Plate convergence; Plate tectonics; Precambrian; Proterozoic; Shear zones; Structural geology; Tectonics; Tectonophysics; Upper Precambrian; Canada; Canadian Shield; Great Slave Lake; North America; Northwest Territories; Western Canada; Mackenzie District Northwest Territories; Northwestern Canada
Abstract Numbers:93M/2209
Record ID:1992039554
Copyright Information:GeoRef, Copyright 2019 American Geosciences Institute. Reference includes data from Mineralogical Abstracts, United Kingdom, Twickenham, United Kingdom
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