Multiple Deformation of Crystalline Rocks in the Tazin Group, Eldorado Fay Mine, NW Saskatchewan
The crystalline rocks of the uranium-bearing Precambrian Tazin Group on the north shore of Lake Athabasca in Saskatchewan have long been known to contain a high proportion of cataclastic rocks. A detailed microscopic textural study of the Tazin rocks from the Eldorado Fay Mine, Beaverlodge, shows th...
| Published in: | Canadian Journal of Earth Sciences |
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| Main Authors: | , |
| Format: | Article in Journal/Newspaper |
| Language: | English |
| Published: |
Canadian Science Publishing
1972
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| Subjects: | |
| Online Access: | http://dx.doi.org/10.1139/e72-034 http://www.nrcresearchpress.com/doi/pdf/10.1139/e72-034 |
| Summary: | The crystalline rocks of the uranium-bearing Precambrian Tazin Group on the north shore of Lake Athabasca in Saskatchewan have long been known to contain a high proportion of cataclastic rocks. A detailed microscopic textural study of the Tazin rocks from the Eldorado Fay Mine, Beaverlodge, shows that: (a) all units of the Tazin Group have been affected by strong postcrystalline (partly syncrystalline) deformation; (b) in many places the deformation reached the highest degree of crushing encountered in sheared rocks; (c) deformation occurred in several distinct phases separated by considerable time intervals and at successively higher structural levels; and (d) the rocks are thus polydeformational.The deformation was so strong that many crystalline rocks have developed the outward appearance of argillites and tuffs. |
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