High-P metamorphism in the Mesoproterozoic: petrochronological insights from the Grenville Province
International audience In the Grenville Province, high-P rocks that are discontinuously exposed along the margin of the allochthonous belt preserve the record of deep crustal processes and are an essential puzzle piece to understanding Mesoproterozoic geodynamics. The Manicouagan Imbricate zone (MIZ...
Published in: | Precambrian Research |
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Main Authors: | , , , |
Other Authors: | , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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HAL CCSD
2023
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Online Access: | https://hal.science/hal-04323129 https://hal.science/hal-04323129/document https://hal.science/hal-04323129/file/lotout%20et%20al._HP-Gren_v-hal.pdf https://doi.org/10.1016/j.precamres.2023.107208 |
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Open Polar |
collection |
Université de Lorraine: HAL |
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ftunilorrainehal |
language |
English |
topic |
Garnet geochronology Zircon geochronology High-P granulite Grenville Orogeny Mesoproterozoic [SDU.STU]Sciences of the Universe [physics]/Earth Sciences [SDU.STU.GC]Sciences of the Universe [physics]/Earth Sciences/Geochemistry [SDU.STU.MI]Sciences of the Universe [physics]/Earth Sciences/Mineralogy [SDU.STU.PE]Sciences of the Universe [physics]/Earth Sciences/Petrography [SDU.STU.TE]Sciences of the Universe [physics]/Earth Sciences/Tectonics |
spellingShingle |
Garnet geochronology Zircon geochronology High-P granulite Grenville Orogeny Mesoproterozoic [SDU.STU]Sciences of the Universe [physics]/Earth Sciences [SDU.STU.GC]Sciences of the Universe [physics]/Earth Sciences/Geochemistry [SDU.STU.MI]Sciences of the Universe [physics]/Earth Sciences/Mineralogy [SDU.STU.PE]Sciences of the Universe [physics]/Earth Sciences/Petrography [SDU.STU.TE]Sciences of the Universe [physics]/Earth Sciences/Tectonics Lotout, Caroline Indares, Aphrodite Vervoort, Jeffrey Deloule, Etienne High-P metamorphism in the Mesoproterozoic: petrochronological insights from the Grenville Province |
topic_facet |
Garnet geochronology Zircon geochronology High-P granulite Grenville Orogeny Mesoproterozoic [SDU.STU]Sciences of the Universe [physics]/Earth Sciences [SDU.STU.GC]Sciences of the Universe [physics]/Earth Sciences/Geochemistry [SDU.STU.MI]Sciences of the Universe [physics]/Earth Sciences/Mineralogy [SDU.STU.PE]Sciences of the Universe [physics]/Earth Sciences/Petrography [SDU.STU.TE]Sciences of the Universe [physics]/Earth Sciences/Tectonics |
description |
International audience In the Grenville Province, high-P rocks that are discontinuously exposed along the margin of the allochthonous belt preserve the record of deep crustal processes and are an essential puzzle piece to understanding Mesoproterozoic geodynamics. The Manicouagan Imbricate zone (MIZ) is one of the three high-P domains from the Grenville Province. It is located in the Central Grenville between the Parautochthonous Belt to the North and the orogenic hinterland to the South, that were metamorphosed during the 1005–980 Ma Rigolet and 1080–1020 Ma Ottawan orogenic phases, respectively. In the western MIZ, the Lelukuau Terrane (LT) mostly consists of Labradorian-age (~1650 Ma) mafic suites with a fringe of aluminous rocks at its southern edge. Metamafic samples from the Western and Eastern parts of the MIZ display a peak assemblage of garnet, clinopyroxene, plagioclase, rare pargasite or edenite, and quartz ± kyanite. Pseudosection modelling suggests high-P granulitepeak conditions at ca. 14 to 16 kbar and 800–900 ◦C, with the scarcity of hydrous phases and quartz explaining the lack of evidence for partial melting. Zircon cores from the Western LT sample show a maximum magmatic age of ca 1.6 Ga. Lu–Hf and Sm–Nd dating on garnet from this sample yield ages of 1020 ± 7 Ma and 1005 ± 13 Ma, respectively, overlapping within error and inferred to represent peak metamorphic conditions followed by fast cooling. In the Eastern LT sample, garnet Lu–Hf dating yields two ages that are consistent with a petrographically preserved two stage growth, at 1033 ± 6 Ma and 1013 ± 6 Ma, while the Sm–Nd age indicates cooling at 1003 ± 8 Ma. The recorded high-P granulite facies conditions highlight a late Ottawan to Rigolet-age localized crustal thickening at the margin of the hinterland during the propagation of the orogen to the NW, with a possible younging of the high-P granulite-facies metamorphism from the Eastern to Western LT. These new results indicate that the high-P belt in the Central Grenville does not ... |
author2 |
Centre de Recherches Pétrographiques et Géochimiques (CRPG) Institut national des sciences de l'Univers (INSU - CNRS)-Université de Lorraine (UL)-Centre National de la Recherche Scientifique (CNRS) Memorial University of Newfoundland = Université Memorial de Terre-Neuve St. John's, Canada (MUN) Laboratoire Magmas et Volcans (LMV) Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Clermont Auvergne (UCA)-Observatoire de Physique du Globe de Clermont-Ferrand (OPGC) Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Clermont Auvergne (UCA)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Clermont Auvergne (UCA) Washington State University (WSU) Project funded by the European Union’s Horizon 2020 research and innovation program under the Marie Sklodowska-Curie grant agreement n◦896746 to Caroline Lotout. European Project: 896746,CHRONOTEC |
format |
Article in Journal/Newspaper |
author |
Lotout, Caroline Indares, Aphrodite Vervoort, Jeffrey Deloule, Etienne |
author_facet |
Lotout, Caroline Indares, Aphrodite Vervoort, Jeffrey Deloule, Etienne |
author_sort |
Lotout, Caroline |
title |
High-P metamorphism in the Mesoproterozoic: petrochronological insights from the Grenville Province |
title_short |
High-P metamorphism in the Mesoproterozoic: petrochronological insights from the Grenville Province |
title_full |
High-P metamorphism in the Mesoproterozoic: petrochronological insights from the Grenville Province |
title_fullStr |
High-P metamorphism in the Mesoproterozoic: petrochronological insights from the Grenville Province |
title_full_unstemmed |
High-P metamorphism in the Mesoproterozoic: petrochronological insights from the Grenville Province |
title_sort |
high-p metamorphism in the mesoproterozoic: petrochronological insights from the grenville province |
publisher |
HAL CCSD |
publishDate |
2023 |
url |
https://hal.science/hal-04323129 https://hal.science/hal-04323129/document https://hal.science/hal-04323129/file/lotout%20et%20al._HP-Gren_v-hal.pdf https://doi.org/10.1016/j.precamres.2023.107208 |
long_lat |
ENVELOPE(-58.430,-58.430,54.180,54.180) |
geographic |
Rigolet |
geographic_facet |
Rigolet |
genre |
Rigolet |
genre_facet |
Rigolet |
op_source |
ISSN: 0301-9268 Precambrian Research https://hal.science/hal-04323129 Precambrian Research, 2023, 399, pp.107208. ⟨10.1016/j.precamres.2023.107208⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.precamres.2023.107208 info:eu-repo/grantAgreement//896746/EU/Condition and Duration of High-T event in LHO assessed through petrochronology: insights from the Grenville Tectonic/CHRONOTEC hal-04323129 https://hal.science/hal-04323129 https://hal.science/hal-04323129/document https://hal.science/hal-04323129/file/lotout%20et%20al._HP-Gren_v-hal.pdf doi:10.1016/j.precamres.2023.107208 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1016/j.precamres.2023.107208 |
container_title |
Precambrian Research |
container_volume |
399 |
container_start_page |
107208 |
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1802649526614360064 |
spelling |
ftunilorrainehal:oai:HAL:hal-04323129v1 2024-06-23T07:56:26+00:00 High-P metamorphism in the Mesoproterozoic: petrochronological insights from the Grenville Province Lotout, Caroline Indares, Aphrodite Vervoort, Jeffrey Deloule, Etienne Centre de Recherches Pétrographiques et Géochimiques (CRPG) Institut national des sciences de l'Univers (INSU - CNRS)-Université de Lorraine (UL)-Centre National de la Recherche Scientifique (CNRS) Memorial University of Newfoundland = Université Memorial de Terre-Neuve St. John's, Canada (MUN) Laboratoire Magmas et Volcans (LMV) Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Clermont Auvergne (UCA)-Observatoire de Physique du Globe de Clermont-Ferrand (OPGC) Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Clermont Auvergne (UCA)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Clermont Auvergne (UCA) Washington State University (WSU) Project funded by the European Union’s Horizon 2020 research and innovation program under the Marie Sklodowska-Curie grant agreement n◦896746 to Caroline Lotout. European Project: 896746,CHRONOTEC 2023 https://hal.science/hal-04323129 https://hal.science/hal-04323129/document https://hal.science/hal-04323129/file/lotout%20et%20al._HP-Gren_v-hal.pdf https://doi.org/10.1016/j.precamres.2023.107208 en eng HAL CCSD Elsevier info:eu-repo/semantics/altIdentifier/doi/10.1016/j.precamres.2023.107208 info:eu-repo/grantAgreement//896746/EU/Condition and Duration of High-T event in LHO assessed through petrochronology: insights from the Grenville Tectonic/CHRONOTEC hal-04323129 https://hal.science/hal-04323129 https://hal.science/hal-04323129/document https://hal.science/hal-04323129/file/lotout%20et%20al._HP-Gren_v-hal.pdf doi:10.1016/j.precamres.2023.107208 info:eu-repo/semantics/OpenAccess ISSN: 0301-9268 Precambrian Research https://hal.science/hal-04323129 Precambrian Research, 2023, 399, pp.107208. ⟨10.1016/j.precamres.2023.107208⟩ Garnet geochronology Zircon geochronology High-P granulite Grenville Orogeny Mesoproterozoic [SDU.STU]Sciences of the Universe [physics]/Earth Sciences [SDU.STU.GC]Sciences of the Universe [physics]/Earth Sciences/Geochemistry [SDU.STU.MI]Sciences of the Universe [physics]/Earth Sciences/Mineralogy [SDU.STU.PE]Sciences of the Universe [physics]/Earth Sciences/Petrography [SDU.STU.TE]Sciences of the Universe [physics]/Earth Sciences/Tectonics info:eu-repo/semantics/article Journal articles 2023 ftunilorrainehal https://doi.org/10.1016/j.precamres.2023.107208 2024-06-10T23:59:36Z International audience In the Grenville Province, high-P rocks that are discontinuously exposed along the margin of the allochthonous belt preserve the record of deep crustal processes and are an essential puzzle piece to understanding Mesoproterozoic geodynamics. The Manicouagan Imbricate zone (MIZ) is one of the three high-P domains from the Grenville Province. It is located in the Central Grenville between the Parautochthonous Belt to the North and the orogenic hinterland to the South, that were metamorphosed during the 1005–980 Ma Rigolet and 1080–1020 Ma Ottawan orogenic phases, respectively. In the western MIZ, the Lelukuau Terrane (LT) mostly consists of Labradorian-age (~1650 Ma) mafic suites with a fringe of aluminous rocks at its southern edge. Metamafic samples from the Western and Eastern parts of the MIZ display a peak assemblage of garnet, clinopyroxene, plagioclase, rare pargasite or edenite, and quartz ± kyanite. Pseudosection modelling suggests high-P granulitepeak conditions at ca. 14 to 16 kbar and 800–900 ◦C, with the scarcity of hydrous phases and quartz explaining the lack of evidence for partial melting. Zircon cores from the Western LT sample show a maximum magmatic age of ca 1.6 Ga. Lu–Hf and Sm–Nd dating on garnet from this sample yield ages of 1020 ± 7 Ma and 1005 ± 13 Ma, respectively, overlapping within error and inferred to represent peak metamorphic conditions followed by fast cooling. In the Eastern LT sample, garnet Lu–Hf dating yields two ages that are consistent with a petrographically preserved two stage growth, at 1033 ± 6 Ma and 1013 ± 6 Ma, while the Sm–Nd age indicates cooling at 1003 ± 8 Ma. The recorded high-P granulite facies conditions highlight a late Ottawan to Rigolet-age localized crustal thickening at the margin of the hinterland during the propagation of the orogen to the NW, with a possible younging of the high-P granulite-facies metamorphism from the Eastern to Western LT. These new results indicate that the high-P belt in the Central Grenville does not ... Article in Journal/Newspaper Rigolet Université de Lorraine: HAL Rigolet ENVELOPE(-58.430,-58.430,54.180,54.180) Precambrian Research 399 107208 |