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| Behaviour of Accessory Monazite and Age Significance During Metamorphism and Partial Melting During Grenville Orogeny: An Example from Otter Lake Area, Central Metasedimentary Belt, QC | |
| Séjourné;Brianna L. | |
| 出版年 | 2014 |
| 学位授予单位 | Université d'Ottawa / University of Ottawa |
| 英文摘要 | The accretionary Mesoproterozoic Grenville Orogeny (ca. 1300 – 980 Ma) involving the Central Metasedimentary Belt is a key building block of the eastern Laurentian margin. A petrographic, mineralogical, geochemical and geochronological study of the migmatite complex in Otter Lake (QC) within the Marble Domain is used to resolve regional metamorphic and magmatic events primarily recorded in the leucosome accessory minerals (i.e. monazite). The relationship between the different stages of monazite and garnet growth and dissolution during the tectonic evolution of the orogenic history for the interpreted metasomatic (injected) and anatectic (in situ) monazite-bearing neosomes from this study supports published thermochronological work in the area and challenges the claim that the Central Metasedimentary Belt was not heated above 500 °C during the Ottawan phase. Instead, the region shows Grenville magmatic and anatectic events were overprinted by high-temperature, fluid-rich Ottawan-phase metamorphism recorded within both injected (monazite-bearing) and in situ (monazite- and garnet-bearing) neosomes. |
| 英文关键词 | Quebec U-Th-Pb EMPA geochronology Geochemistry Garnet Monazite Neosomes Partial melting Metasomatism Anatexis Migmatite Marble Domain Central Metasedimentary Belt Grenville Province Mesoproterozoic |
| 语种 | 英语 |
| URL | http://hdl.handle.net/10393/31574 |
| 来源机构 | Université d'Ottawa / University of Ottawa |
| 资源类型 | 学位论文 |
| 条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/248861 |
| 推荐引用方式 GB/T 7714 | Séjourné;Brianna L.. Behaviour of Accessory Monazite and Age Significance During Metamorphism and Partial Melting During Grenville Orogeny: An Example from Otter Lake Area, Central Metasedimentary Belt, QC[D]. Université d'Ottawa / University of Ottawa,2014. |
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