| Reference Type | Journal (article/letter/editorial) |
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| Title | 40Ar/39Ar dates on hornblende, muscovite, and biotite from the Mica Creek area, British Columbia: regional metamorphic and tectonic implications |
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| Journal | Canadian Journal of Earth Sciences |
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| Authors | Ghent, Edward | Author |
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| Villeneuve, Michael | Author |
| Year | 2006 (January 1) | Volume | 43 |
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| Issue | 1 |
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| Publisher | Canadian Science Publishing |
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| DOI | doi:10.1139/e05-095Search in ResearchGate |
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| Generate Citation Formats |
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| Mindat Ref. ID | 484110 | Long-form Identifier | mindat:1:5:484110:8 |
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| GUID | 0 |
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| Full Reference | Ghent, Edward, Villeneuve, Michael (2006) 40Ar/39Ar dates on hornblende, muscovite, and biotite from the Mica Creek area, British Columbia: regional metamorphic and tectonic implications. Canadian Journal of Earth Sciences, 43 (1) 83-100 doi:10.1139/e05-095 |
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| Plain Text | Ghent, Edward, Villeneuve, Michael (2006) 40Ar/39Ar dates on hornblende, muscovite, and biotite from the Mica Creek area, British Columbia: regional metamorphic and tectonic implications. Canadian Journal of Earth Sciences, 43 (1) 83-100 doi:10.1139/e05-095 |
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| In | (2006, January) Canadian Journal of Earth Sciences Vol. 43 (1) Canadian Science Publishing |
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| Abstract/Notes | A metamorphic high, the SelkirkMonasheeCariboo complex (SMC) is a 200 km Ă— 60 km area cored by K-feldsparsillimanite rocks. In the Mica Creek area, there appear to be no discontinuities in metamorphic isograds, structural trends, or the Late Precambrian stratigraphic units. UPb dates suggested that the continuities may only be apparent. In this paper, we report 40Ar/39Ar dates on muscovite, biotite, and hornblende from some of the same samples dated by UPb and samples that crop out very close to the dated samples. The goal was to set constraints on the alternative interpretations of the metamorphicstructural history. These interpretations are as follows: (1) UPb ages record different times of metamorphic crystallization and deformation, and there are significant tectonic displacements; the mappable continuities are only apparent. (2) The structural and stratigraphic continuity is real, and the range is due to localized heating and deformation events spanning ~100 Ma; the relative uniformity of the 40Ar/39Ar dates over a distance of ~45 km suggests that the area behaved as a coherent cooling unit. |
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