| Reference Type | Journal (article/letter/editorial) |
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| Title | Rb–Sr dating of the Bokan Mountain granite complex and its country rocks |
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| Journal | Canadian Journal of Earth Sciences |
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| Authors | Armstrong, Richard Lee | Author |
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| Year | 1985 (August 1) | Volume | 22 |
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| Issue | 8 |
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| Publisher | Canadian Science Publishing |
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| DOI | doi:10.1139/e85-125Search in ResearchGate |
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| Generate Citation Formats |
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| Mindat Ref. ID | 478773 | Long-form Identifier | mindat:1:5:478773:4 |
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| GUID | 0 |
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| Full Reference | Armstrong, Richard Lee (1985) Rb–Sr dating of the Bokan Mountain granite complex and its country rocks. Canadian Journal of Earth Sciences, 22 (8) 1233-1236 doi:10.1139/e85-125 |
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| Plain Text | Armstrong, Richard Lee (1985) Rb–Sr dating of the Bokan Mountain granite complex and its country rocks. Canadian Journal of Earth Sciences, 22 (8) 1233-1236 doi:10.1139/e85-125 |
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| In | (1985, August) Canadian Journal of Earth Sciences Vol. 22 (8) Canadian Science Publishing |
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| Abstract/Notes | Seven out of 11 whole-rock samples of the Bokan granitic complex give a Rb–Sr isochron date of 151 ± 5 Ma (Late Jurassic) as a minimum age for the complex. This result is discordant with published Early to Middle Jurassic K–Ar and U–Pb dates for the same unique peralkaline rock suite. A Late Jurassic age is tenable if excess radiogenic Ar and a trace of xenocrystic zircon are postulated to explain the previously reported results and the U–Pb data are reinterpreted to give an age between 156 ± 6 and [Formula: see text]. Granitic country rock for the complex is dated by Rb–Sr at 432 ± 19 Ma (Early Silurian), in agreement with published K–Ar dates. |
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