| Reference Type | Journal (article/letter/editorial) |
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| Title | Structural evolution of a major fault zone: the Cape Ray Fault Zone, southwestern Newfoundland, Canada |
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| Journal | Canadian Journal of Earth Sciences |
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| Authors | Dubé, Benoît | Author |
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| Lauzière, Kathleen | Author |
| Year | 1996 (February 1) | Volume | 33 |
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| Issue | 2 |
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| Publisher | Canadian Science Publishing |
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| DOI | doi:10.1139/e96-018Search in ResearchGate |
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| Generate Citation Formats |
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| Mindat Ref. ID | 482776 | Long-form Identifier | mindat:1:5:482776:8 |
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| GUID | 0 |
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| Full Reference | Dubé, Benoît, Lauzière, Kathleen (1996) Structural evolution of a major fault zone: the Cape Ray Fault Zone, southwestern Newfoundland, Canada. Canadian Journal of Earth Sciences, 33 (2) 199-215 doi:10.1139/e96-018 |
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| Plain Text | Dubé, Benoît, Lauzière, Kathleen (1996) Structural evolution of a major fault zone: the Cape Ray Fault Zone, southwestern Newfoundland, Canada. Canadian Journal of Earth Sciences, 33 (2) 199-215 doi:10.1139/e96-018 |
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| In | (1996, February) Canadian Journal of Earth Sciences Vol. 33 (2) Canadian Science Publishing |
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| Abstract/Notes | The Cape Ray Fault Zone is a major Paleozoic structure in southwestern Newfoundland, and occurs at or close to the boundary between two major continental blocks, Laurentia and Avalonia. A detailed structural analysis demonstrates that the fault records early reverse-sinistral thrusting of the Grand Bay Complex at amphibolite grade (D2), followed by a protracted event (D3) characterized by reverse-dextral thrusting of the Grand Bay Complex rocks on top of the supracrustal rocks of the Windsor Point Group and retrogression to greenschist facies, as well as a pre-384 Ma orogen-parallel dextral transcurrent mylonite (D4) during the later stages of the collision. Regional-scale strain partitioning induced heterogeneity of strain both along and across the strike of the Cape Ray Fault Zone. The east–west-oriented segment of the Cape Ray Fault Zone is a tear fault that accommodated differential displacement along the length of the fault. Later stages of the deformation include post-384 Ma sinistral transcurrent reactivation of the dextral mylonite and extension. The reverse-sinistral thrusting and the reverse-dextral motion occurred between 415 and 386 Ma and correspond to the two-phase Acadian orogeny recognized at the scale of the orogen and believed to be related to collision between Laurentia and Avalonia. The Cape Ray Fault Zone preserves evidence of large-scale geodynamic processes affecting rocks where the kinematics and the timing are well constrained. |
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