Zagorevski, A., McNicoll, V. (2012) Evidence for seamount accretion to a peri-Laurentian arc during closure of Iapetus 1This article is one of a series of papers published in CJES Special Issue: In honour of Ward Neale on the theme of Appalachian and Grenvillian geology.2 Geological Survey of Canada Contribution 20100465. Canadian Journal of Earth Sciences, 49 (1) 147-165 doi:10.1139/e11-016
| Reference Type | Journal (article/letter/editorial) | ||
|---|---|---|---|
| Title | Evidence for seamount accretion to a peri-Laurentian arc during closure of Iapetus 1This article is one of a series of papers published in CJES Special Issue: In honour of Ward Neale on the theme of Appalachian and Grenvillian geology.2 Geological Survey of Canada Contribution 20100465. | ||
| Journal | Canadian Journal of Earth Sciences | ||
| Authors | Zagorevski, A. | Author | |
| McNicoll, V. | Author | ||
| Year | 2012 (January) | Volume | 49 |
| Issue | 1 | ||
| Publisher | Canadian Science Publishing | ||
| DOI | doi:10.1139/e11-016Search in ResearchGate | ||
| Generate Citation Formats | |||
| Mindat Ref. ID | 484758 | Long-form Identifier | mindat:1:5:484758:2 |
| GUID | 0 | ||
| Full Reference | Zagorevski, A., McNicoll, V. (2012) Evidence for seamount accretion to a peri-Laurentian arc during closure of Iapetus 1This article is one of a series of papers published in CJES Special Issue: In honour of Ward Neale on the theme of Appalachian and Grenvillian geology.2 Geological Survey of Canada Contribution 20100465. Canadian Journal of Earth Sciences, 49 (1) 147-165 doi:10.1139/e11-016 | ||
| Plain Text | Zagorevski, A., McNicoll, V. (2012) Evidence for seamount accretion to a peri-Laurentian arc during closure of Iapetus 1This article is one of a series of papers published in CJES Special Issue: In honour of Ward Neale on the theme of Appalachian and Grenvillian geology.2 Geological Survey of Canada Contribution 20100465. Canadian Journal of Earth Sciences, 49 (1) 147-165 doi:10.1139/e11-016 | ||
| In | (2012, January) Canadian Journal of Earth Sciences Vol. 49 (1) Canadian Science Publishing | ||
| Abstract/Notes | The Red Indian Line is the fundamental Iapetus suture zone in the Newfoundland Appalchians along which the main tract of the Iapetus Ocean was consumed. Despite being the site of the closure of a wide ocean, few vestiges of the Iapetus plate have been accreted along Red Indian Line. Ordovician rocks in the Notre Dame Bay area preserve the only evidence for accretion of a seamount in Newfoundland. The seamount is characterized by alkali basalt and hypabyssal rocks that are juxtaposed with Darriwilian peri-Laurentian volcanic arc rocks (466 ± 4 and 467 ± 4 Ma) along a major mylonite zone. The mylonite zone lacks sedimentary rocks suggesting that the seamount was accreted to the arc along a sediment-starved interface and that significant subduction erosion took place along the Laurentian margin. Identification of subduction erosion indicates that an accretionary prism did not exist outboard of Laurentia in Newfoundland, in contrast to the well developed accretionary prisms of the Caledonides. | ||
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