A comparison of the age and composition of the Shelburne dyke, Nova Scotia, and the Messejana dyke, Spain

• Published in: Canadian Journal of Earth Sciences
• Main Authors: Dunn, Andrew M, Reynolds, Peter H, Clarke, D Barrie, Ugidos, Jose M
• Format: Article in Journal/Newspaper
• Language: English
• Published: Canadian Science Publishing 1998
• Subjects: General Earth and Planetary Sciences; North Atlantic
• Online Access: http://dx.doi.org/10.1139/e98-058; http://www.nrcresearchpress.com/doi/pdf/10.1139/e98-058

New 40 Ar/ 39 Ar age determinations on biotite from the Shelburne dyke of Nova Scotia and from the Messejana dyke of Spain are identical at 203 ± 2 Ma. In addition, both dykes have similar chemical compositions and probably represent similar magma sources, petrogenetic processes, and tectonic settings related to an early phase of opening of the North Atlantic Ocean.