Rb-Sr whole-rock isochron studies of the
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P. J. O'Connor; C. B. Long; J. A. Evans
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Article
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1987
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John Wiley and Sons
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English
β 750 KB
Results of R b S r whole-rock isochron studies of the Barnesmore and Fanad plutons of Co. Donegal are presented. The Barnesmore pluton yields an age of 397 \* 7 My and initial x7Sr/x6Sr ratio of 0.7063 \* 04005 (MSWD 10.2) while the Fanad pluton yields an age of 402 t 10 My and initial X7Sr/ %r rati