Geochronology of the Twillingate Granite and Herring Neck Group, Notre Dame Bay, Newfoundland

Zircons from the Twillingate Granite form a linear array with a concordia intercept of 510 + 17 – 16 m.y. Mafic dikes that cut deformed granite along the southern contact of the pluton at New World Island record 40 Ar/ 39 Ar hornblende ages of 440 ± 10 and 473 ± 9 m.y. These ages indicate that the m...

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Bibliographic Details
Published in:Canadian Journal of Earth Sciences
Main Authors: Williams, Harold, Dallmeyer, R. D., Wanless, R. K.
Format: Article in Journal/Newspaper
Language:English
Published: Canadian Science Publishing 1976
Subjects:
Online Access:http://dx.doi.org/10.1139/e76-166
http://www.nrcresearchpress.com/doi/pdf/10.1139/e76-166