Mills, A J, Berman, R G, Davis, W J, Tella, S, Carr, S, Roddick, C, Hanmer, S (2007) Thermobarometry and geochronology of the Uvauk complex, a polymetamorphic Neoarchean and Paleoproterozoic segment of the Snowbird tectonic zone, Nunavut, Canada. Canadian Journal of Earth Sciences, 44 (2) 245-266 doi:10.1139/e06-080
| Reference Type | Journal (article/letter/editorial) | ||
|---|---|---|---|
| Title | Thermobarometry and geochronology of the Uvauk complex, a polymetamorphic Neoarchean and Paleoproterozoic segment of the Snowbird tectonic zone, Nunavut, Canada | ||
| Journal | Canadian Journal of Earth Sciences | ||
| Authors | Mills, A J | Author | |
| Berman, R G | Author | ||
| Davis, W J | Author | ||
| Tella, S | Author | ||
| Carr, S | Author | ||
| Roddick, C | Author | ||
| Hanmer, S | Author | ||
| Year | 2007 (February 1) | Volume | 44 |
| Issue | 2 | ||
| Publisher | Canadian Science Publishing | ||
| DOI | doi:10.1139/e06-080Search in ResearchGate | ||
| Generate Citation Formats | |||
| Mindat Ref. ID | 484271 | Long-form Identifier | mindat:1:5:484271:6 |
| GUID | 0 | ||
| Full Reference | Mills, A J, Berman, R G, Davis, W J, Tella, S, Carr, S, Roddick, C, Hanmer, S (2007) Thermobarometry and geochronology of the Uvauk complex, a polymetamorphic Neoarchean and Paleoproterozoic segment of the Snowbird tectonic zone, Nunavut, Canada. Canadian Journal of Earth Sciences, 44 (2) 245-266 doi:10.1139/e06-080 | ||
| Plain Text | Mills, A J, Berman, R G, Davis, W J, Tella, S, Carr, S, Roddick, C, Hanmer, S (2007) Thermobarometry and geochronology of the Uvauk complex, a polymetamorphic Neoarchean and Paleoproterozoic segment of the Snowbird tectonic zone, Nunavut, Canada. Canadian Journal of Earth Sciences, 44 (2) 245-266 doi:10.1139/e06-080 | ||
| In | (2007, February) Canadian Journal of Earth Sciences Vol. 44 (2) Canadian Science Publishing | ||
| Abstract/Notes | The Uvauk complex is an ultramylonite-bounded, granulite-facies suite of anorthosite–gabbro that forms part of the Chesterfield Inlet segment of the Snowbird tectonic zone. Following initial anorthosite–gabbro magmatism at ca. 2.71 Ga and a cryptic 2.62–2.60 Ga event marked by zircon and monazite growth, the Uvauk complex experienced two high-grade tectonometamorphic events at 2.56–2.50 and 1.91–1.90 Ga. Similar to the 2.56–2.50 Ga development of other shear zones in the region, the upper-amphibolite-facies to granulite-facies, moderately high-pressure (8.4–11.0 kbar and 705–760 °C) (1 kbar = 100 MPA) M1 event is interpreted to have involved the structural emplacement of ca. 2.71 Ga Uvauk complex rocks on ca. 2.68 Ga tonalitic rocks to the south. Granulite-facies, high-pressure (11.2–14.7 kbar and 695–865 °C) M2 metamorphism, gabbroic magmatism, and mylonite development within the complex at ca. 1.9 Ga culminated with ~3.5 kbar decompression at high temperature. Clockwise pressure–temperature–time (P–T–t) paths reflect crustal thickening, thought to be related to the early accretionary history of the Trans-Hudson Orogen. A thermal overprint at ca. 1.85–1.75 Ga resulted in retrograde metamorphism (5.8–6.0 kbar and 625–695 °C) associated with post-tectonic granitoid plutonism. | ||
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