40 Ar/ 39 Ar Dating of the Brighton Gabbro Complex, Lushs Bight Terrane, Newfoundland
A hornblende sample from this complex has an apparent 40 Ar/ 39 Ar age of 495 ± 5 my. The 40 Ar/ 39 Ar data was obtained in a stepwise outgassing experiment. If, as has been suggested, the Brighton complex represents Layer 3 of a former oceanic crust, then the latter was produced in this region abou...
| Published in: | Canadian Journal of Earth Sciences |
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| Main Authors: | , |
| Format: | Article in Journal/Newspaper |
| Language: | English |
| Published: |
Canadian Science Publishing
1974
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| Subjects: | |
| Online Access: | http://dx.doi.org/10.1139/e74-141 http://www.nrcresearchpress.com/doi/pdf/10.1139/e74-141 |
| Summary: | A hornblende sample from this complex has an apparent 40 Ar/ 39 Ar age of 495 ± 5 my. The 40 Ar/ 39 Ar data was obtained in a stepwise outgassing experiment. If, as has been suggested, the Brighton complex represents Layer 3 of a former oceanic crust, then the latter was produced in this region about 495 my ago (that is, in the Lower Ordovician). |
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