Discussion of North Atlantic Igneous Province: A review of models for its formation by
Any effort to summarize the available data from the North Atlantic Igneous Province is welcome, and we should thank Meyer et al. (this volume) for their valuable contribution. However, I would like to make the following comments, the first on a minor aspect and the second concerning a much more gene...
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| Format: | Text |
| Language: | English |
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2007
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| Online Access: | http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.546.7031 http://www.mantleplumes.org/P%5E4/P%5E4Chapters/Meyer_Discussion.pdf |
| Summary: | Any effort to summarize the available data from the North Atlantic Igneous Province is welcome, and we should thank Meyer et al. (this volume) for their valuable contribution. However, I would like to make the following comments, the first on a minor aspect and the second concerning a much more general point. A. The South-East Baffin controversy Meyer et al. (this volume) refer to the argument concerning the existence of an onshore exposed SDR along the W-Greenland margin north of ~70˚N (Chalmers et al., 1999). I do not think that this is a matter of debate anymore. Geoffroy et al. (1998; 2001) were correct in recognizing that the Disko-Svartenhuk W-Greenland coastal area exposes a thick fan-shaped inner prism of syn-tectonic seaward-dipping basalts and tuffs. As such, it essentially forms an upper crustal structure typical of volcanic passive margins worldwide. The recent confirmation of an SDR located on the conjugate margin offshore from Baffin Island fully supports the view that the S-Baffin Bay margins are of volcanic type (Skaarup et al., 2006). However, Chalmers et al. (1999) rightly point out the geodynamic importance of the Ungava transform splay faults in the tectonic structure of the Disko and Nuussuaq areas. The W- |
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