Abstract
Considerable interest has arisen recently in the nature of plate tectonic events in Arctic Canada and northwestern Greenland during Cretaceous to Recent times1. Relatively little is known, however, concerning contemporaneous volcanism, and detailed studies have only been made of the basalts related to the Baffin Bay spreading centre2,3, and the Kap Washington peralkaline volcanics associated with regional doming and rifting of northern Greenland during the late Cretaceous4. We show here that the Freemans Cove volcanic suite forms a major petrological province of Eocene saturated to undersaturated volcanism in the central Canadian Arctic. This occurrence of basalts, nephelinites and phonolites is an example of intraplate magmatism of the type associated with continental rifting. Emplacement of the rocks has been controlled by graben-like faults formed during the Boreal rifting and Eurekan deformation of the Arctic plate. Magmatism was initiated when extensional deformation was transformed by pre-existing resistant structures into a region of compression and uplift, causing partial melting of metasomatized mantle. Primary nephelinite magmas unusually rich in Ba, Sr, La form a major component of the magmatism.
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References
Kerr, J. W. Geol. Ass. Can. Spec. Pap. No. 20, 456–486 (1980).
Clarke, D. B. Contr. Miner. Petrol. 25, 203–224 (1970).
Clarke, D. B. Can. J. Earth Sci. 12, 1396–1405 (1975).
Batten, D. J. et al. Nature 294, 150–152 (1981).
Kerr, J. W. Geol. Surv. Can. Mem. 378 (1974).
Clague, D. A. & Frey, F. A. J. Petrol. 23, 447–504 (1982).
Frey, F. A., Green, D. H. & Roy, S. D. J. Petrol. 19, 463–513 (1978).
Le Bas, M. J. Carbonatite–Nephelinite Volcanism (Wiley, New York, 1977).
Hardenbol, J. & Berggren, W. A. in Contributions to the Geologic Time Scale (eds Cohee, G. V. et al.) 213–234 (Studies in Geology No. 6, American Association of Petroleum Geologists Tulsa, 1978).
Goles, G. G. Lithos 8, 47–58 (1975).
Spencer, A. B. J. Petrol. 272–306 (1969).
Wimmenauer, W. in The Alkaline Rocks (ed. Sørensen, H.) 238–271 (Wiley, New York, 1974).
Bailey, D. K. Nature 296, 525–530 (1982).
Clarke, D. B. & Upton, B. G. J. Can. J. Earth Sci. 8, 248–258 (1971).
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Mitchell, R., Platt, R. Primitive nephelinitic volcanism associated with rifting and uplift in the Canadian Arctic. Nature 303, 609–612 (1983). https://doi.org/10.1038/303609a0
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DOI: https://doi.org/10.1038/303609a0
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