Deformation of the Macumber Formation, Antigonish Basin, Nova Scotia: implications for the Ainslie Detachment
The Antigonish Basin is one of several Carboniferous structural basins in northeastern Nova Scotia, the evolution of which have been cited as evidence for major detachment faulting within the Visean Windsor Group of Maritime Canada. Evidence of extension in the Antigonish Basin takes the form of a m...
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Veröffentlicht in: | Atlantic geology 2002-07, Vol.38 (2-3), p.135-144 |
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Format: | Artikel |
Sprache: | eng |
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Zusammenfassung: | The Antigonish Basin is one of several Carboniferous structural basins in northeastern Nova Scotia, the evolution of which have been cited as evidence for major detachment faulting within the Visean Windsor Group of Maritime Canada. Evidence of extension in the Antigonish Basin takes the form of a major subhorizontal structure that closely follows the basin margins and has been interpreted as part of the regional Ainslie Detachment. Placed at the top of the basal Macumber Formation and reportedly characterized by several metres of calc-mylonite, the detachment is considered to have accommodated 10-25 km of westward transport of the evaporitic Windsor and overlying Mabou groups during the late Namurian-early Westphalian. |
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ISSN: | 0843-5561 |