Geochemical Characterization, Geochronology, and Geodynamic Implications of Grenville Rare Earths Bearing Syenites, Haut-Saint-Maurice, QC, Canada
The syenites in the western part of the Grenville Province in Quebec have been known since the 1990s, but few studies have been carried out on them. Over the last three years, a mapping project carried out by the Ministère de l’Énergie et des Ressources naturelles has...
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| Format: | Article |
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MDPI AG
2018-08-01
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| Series: | Minerals |
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| Online Access: | http://www.mdpi.com/2075-163X/8/8/336 |
| _version_ | 1811326547759464448 |
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| author | Gabriel Côté Abdelali Moukhsil Marc Constantin Jean David |
| author_facet | Gabriel Côté Abdelali Moukhsil Marc Constantin Jean David |
| author_sort | Gabriel Côté |
| collection | DOAJ |
| description | The syenites in the western part of the Grenville Province in Quebec have been known since the 1990s, but few studies have been carried out on them. Over the last three years, a mapping project carried out by the Ministère de l’Énergie et des Ressources naturelles has revealed the presence of several rare earth element (REE)–bearing syenitic intrusions in this area. In this paper, we present a geodynamic model for their formation based on geochemical, thermobarometric, and geochronological data. The intrusions were emplaced between 1038 +15/−13 Ma and 1009 ± 3 Ma. The syenites can be divided into two groups: (1) an older, REE-bearing group associated with a volcanic arc and (2) a younger group with lower REE contents associated with an anorogenic event. Formation temperatures were between 898 and 1005 °C, and pressures were between 2 and 10 kbar. This model involving two intrusive periods is in conflict with the model of a large, hot, long-duration collisional orogen proposed by Rivers et al. (2009) but is consistent with more recent studies. |
| first_indexed | 2024-04-13T14:51:03Z |
| format | Article |
| id | doaj.art-d2ffa16fabe34a5d94fb22013fa1120a |
| institution | Directory Open Access Journal |
| issn | 2075-163X |
| language | English |
| last_indexed | 2024-04-13T14:51:03Z |
| publishDate | 2018-08-01 |
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| spelling | doaj.art-d2ffa16fabe34a5d94fb22013fa1120a2022-12-22T02:42:36ZengMDPI AGMinerals2075-163X2018-08-018833610.3390/min8080336min8080336Geochemical Characterization, Geochronology, and Geodynamic Implications of Grenville Rare Earths Bearing Syenites, Haut-Saint-Maurice, QC, CanadaGabriel Côté0Abdelali Moukhsil1Marc Constantin2Jean David3Department of Geology and Geological Engineering, Faculty of Science and Engineering, Université Laval, Quebec, QC G1V 0A6, CanadaMinistère de l’Énergie et des Ressources Naturelles, Quebec City, QC G1H 6R1, CanadaDepartment of Geology and Geological Engineering, Faculty of Science and Engineering, Université Laval, Quebec, QC G1V 0A6, CanadaStable Isotope Geochemistry Laboratory (GEOTOP), Montreal, QC H2X 3Y7, CanadaThe syenites in the western part of the Grenville Province in Quebec have been known since the 1990s, but few studies have been carried out on them. Over the last three years, a mapping project carried out by the Ministère de l’Énergie et des Ressources naturelles has revealed the presence of several rare earth element (REE)–bearing syenitic intrusions in this area. In this paper, we present a geodynamic model for their formation based on geochemical, thermobarometric, and geochronological data. The intrusions were emplaced between 1038 +15/−13 Ma and 1009 ± 3 Ma. The syenites can be divided into two groups: (1) an older, REE-bearing group associated with a volcanic arc and (2) a younger group with lower REE contents associated with an anorogenic event. Formation temperatures were between 898 and 1005 °C, and pressures were between 2 and 10 kbar. This model involving two intrusive periods is in conflict with the model of a large, hot, long-duration collisional orogen proposed by Rivers et al. (2009) but is consistent with more recent studies.http://www.mdpi.com/2075-163X/8/8/336GrenvillesyeniteREE |
| spellingShingle | Gabriel Côté Abdelali Moukhsil Marc Constantin Jean David Geochemical Characterization, Geochronology, and Geodynamic Implications of Grenville Rare Earths Bearing Syenites, Haut-Saint-Maurice, QC, Canada Minerals Grenville syenite REE |
| title | Geochemical Characterization, Geochronology, and Geodynamic Implications of Grenville Rare Earths Bearing Syenites, Haut-Saint-Maurice, QC, Canada |
| title_full | Geochemical Characterization, Geochronology, and Geodynamic Implications of Grenville Rare Earths Bearing Syenites, Haut-Saint-Maurice, QC, Canada |
| title_fullStr | Geochemical Characterization, Geochronology, and Geodynamic Implications of Grenville Rare Earths Bearing Syenites, Haut-Saint-Maurice, QC, Canada |
| title_full_unstemmed | Geochemical Characterization, Geochronology, and Geodynamic Implications of Grenville Rare Earths Bearing Syenites, Haut-Saint-Maurice, QC, Canada |
| title_short | Geochemical Characterization, Geochronology, and Geodynamic Implications of Grenville Rare Earths Bearing Syenites, Haut-Saint-Maurice, QC, Canada |
| title_sort | geochemical characterization geochronology and geodynamic implications of grenville rare earths bearing syenites haut saint maurice qc canada |
| topic | Grenville syenite REE |
| url | http://www.mdpi.com/2075-163X/8/8/336 |
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