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Journal of the Geological Society; 1992; v. 149; issue.2; p. 159-162;
DOI: 10.1144/gsjgs.149.2.0159
© 1992 Geological Society of London

Article

Does the Birchy Complex of Newfoundland extend into Ireland?

J. A. WINCHESTER1, H. WILLIAMS2, M. D. MAX3 & C. R. VAN STAAL4

1 University of Keele, Keele, Staffordshire, ST5 5BG, K
2 Department of Earth Sciences, Memorial University, St. John’s, Newfoundland, Canada A1B 3X5
3 Saclant Underwater Research Centre, 1–19026 San Bartolomeo, Italy
4 Geological Survey of Canada, 601 Booth Street, Ottawa, Ontario, Canada K1A 0E8

Metabasalts from the Birchy Complex in Newfoundland are chemically similar to the Kill-Callow suite of metabasalts in Co. Mayo, Ireland. The latter, which are also chemically akin to Cambrian amphibolites of the Highland Border Series of Scotland, lie along the shear zone associated with the Fair Head-Clew Bay line, which has been equated with the Baie Verte-Brompton line in Newfoundland. The Birchy Complex occupies an analogous tectonic position along the Baie Verte-Brompton line and hence we postulate that chemical similarities suggest a correlation between the Birchy Complex of Newfoundland and the Kill-Callow suite of Ireland.





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