Regional metamorphism of the Appalachian Humber zone of Gaspé Peninsula: 40 Ar/ 39 Ar evidence for crustal thickening during the Taconian orogeny.
Les études géochronologiques à propos de la chronologie des déformations et du métamorphisme le long de la marge Laurentienne ont montré que l’âge des événements métamorphiques varie le long du segment des Appalaches canadiennes entre Terre-Neuve et le sud du Québec. La Gaspésie est située entre les...
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2003
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Online Access: | https://espace.inrs.ca/id/eprint/11058/ https://doi.org/10.1139/E02-076 |
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ftinrsquebec:oai:espace.inrs.ca:11058 2023-05-15T17:23:04+02:00 Regional metamorphism of the Appalachian Humber zone of Gaspé Peninsula: 40 Ar/ 39 Ar evidence for crustal thickening during the Taconian orogeny. Pincivy, Alix Malo, Michel Ruffet, Gilles Tremblay, Alain Sacks, Paul E. 2003 https://espace.inrs.ca/id/eprint/11058/ https://doi.org/10.1139/E02-076 unknown Pincivy, Alix, Malo, Michel, Ruffet, Gilles, Tremblay, Alain et Sacks, Paul E. (2003). Regional metamorphism of the Appalachian Humber zone of Gaspé Peninsula: 40Ar/39Ar evidence for crustal thickening during the Taconian orogeny. Canadian Journal of Earth Sciences , vol. 40 , nº 2. p. 301-315. DOI:10.1139/E02-076 <https://doi.org/10.1139/E02-076>. doi:10.1139/E02-076 absolute age amphibole group Appalachians Ar/Ar Canada chain silicates clinoamphibole crustal thickening dates deformation Eastern Canada electron probe data foliation Gaspe Peninsula hornblende Humber Zone metamorphic rocks metamorphism mica group muscovite North America Northern Appalachians Ordovician orogeny Paleozoic Quebec regional metamorphism sheet silicates silicates Taconic Orogeny tectonics Shickshock Group Article Évalué par les pairs 2003 ftinrsquebec https://doi.org/10.1139/E02-076 2023-02-10T11:46:29Z Les études géochronologiques à propos de la chronologie des déformations et du métamorphisme le long de la marge Laurentienne ont montré que l’âge des événements métamorphiques varie le long du segment des Appalaches canadiennes entre Terre-Neuve et le sud du Québec. La Gaspésie est située entre les deux extrémités de ce segment. De nouveaux ages 40 Ar/ 39 Ar mettent en évidence un métamorphisme d’âge ordovicien en Gaspésie. Les échantillons provenant des roches du Groupe de Shickshock dans la zone de Humber interne, donnent des âges 40 Ar/ 39 Ar, sur muscovite et hornblende, compris entre 457 et 454 Ma. Les échantillons provenant de l’Amphibolite du Diable, la semelle métamorphique du Mont Albert, donnent quant à eux des âges 40 Ar/ 39 Ar, sur muscovite et hornblende, compris entre 459 et 457 Ma. Les âges ordoviciens mesurés dans la zone de Humber interne sont concordants avec les âges 40 Ar/ 39 Ar mesurés dans le sud du Québec et sont interprétés, en Gaspésie, comme représentant l’âge de la mise en place de la nappe ophiolitique et de sa semelle métamorphique sur la marge continentale. Abstact Geochronological studies on the timing of deformation and metamorphism along the Laurentian margin have shown that the ages of metamorphic events change along-strike within the Newfoundland – southern Quebec segment of the Canadian Appalachians. The Gaspé Peninsula is located at mid-point of the two extremities of this segment. New single-grain laser 40 Ar/ 39 Ar plateau ages solely reflect latest Middle–Late Ordovician metamorphism. Samples taken within the internal Humber zone in the Shickshock Group rocks yield 40 Ar/ 39 Ar muscovite and hornblende ages ranging from 457 to 454 Ma. Samples from the Amphibolite du Diable, the metamorphic sole of the Mont Albert ophiolite, yield 40 Ar/ 39 Ar muscovite and hornblende ages ranging from 459 to 457 Ma. Ordovician ages of the internal Humber zone are consistent with 40 Ar/ 39 Ar ages from southern Quebec and are interpreted as the result of the emplacement onto the margin of ... Article in Journal/Newspaper Newfoundland Terre-Neuve Institut national de la recherche scientifique, Québec: Espace INRS Canada Canadian Journal of Earth Sciences 40 2 301 315 |
institution |
Open Polar |
collection |
Institut national de la recherche scientifique, Québec: Espace INRS |
op_collection_id |
ftinrsquebec |
language |
unknown |
topic |
absolute age amphibole group Appalachians Ar/Ar Canada chain silicates clinoamphibole crustal thickening dates deformation Eastern Canada electron probe data foliation Gaspe Peninsula hornblende Humber Zone metamorphic rocks metamorphism mica group muscovite North America Northern Appalachians Ordovician orogeny Paleozoic Quebec regional metamorphism sheet silicates silicates Taconic Orogeny tectonics Shickshock Group |
spellingShingle |
absolute age amphibole group Appalachians Ar/Ar Canada chain silicates clinoamphibole crustal thickening dates deformation Eastern Canada electron probe data foliation Gaspe Peninsula hornblende Humber Zone metamorphic rocks metamorphism mica group muscovite North America Northern Appalachians Ordovician orogeny Paleozoic Quebec regional metamorphism sheet silicates silicates Taconic Orogeny tectonics Shickshock Group Pincivy, Alix Malo, Michel Ruffet, Gilles Tremblay, Alain Sacks, Paul E. Regional metamorphism of the Appalachian Humber zone of Gaspé Peninsula: 40 Ar/ 39 Ar evidence for crustal thickening during the Taconian orogeny. |
topic_facet |
absolute age amphibole group Appalachians Ar/Ar Canada chain silicates clinoamphibole crustal thickening dates deformation Eastern Canada electron probe data foliation Gaspe Peninsula hornblende Humber Zone metamorphic rocks metamorphism mica group muscovite North America Northern Appalachians Ordovician orogeny Paleozoic Quebec regional metamorphism sheet silicates silicates Taconic Orogeny tectonics Shickshock Group |
description |
Les études géochronologiques à propos de la chronologie des déformations et du métamorphisme le long de la marge Laurentienne ont montré que l’âge des événements métamorphiques varie le long du segment des Appalaches canadiennes entre Terre-Neuve et le sud du Québec. La Gaspésie est située entre les deux extrémités de ce segment. De nouveaux ages 40 Ar/ 39 Ar mettent en évidence un métamorphisme d’âge ordovicien en Gaspésie. Les échantillons provenant des roches du Groupe de Shickshock dans la zone de Humber interne, donnent des âges 40 Ar/ 39 Ar, sur muscovite et hornblende, compris entre 457 et 454 Ma. Les échantillons provenant de l’Amphibolite du Diable, la semelle métamorphique du Mont Albert, donnent quant à eux des âges 40 Ar/ 39 Ar, sur muscovite et hornblende, compris entre 459 et 457 Ma. Les âges ordoviciens mesurés dans la zone de Humber interne sont concordants avec les âges 40 Ar/ 39 Ar mesurés dans le sud du Québec et sont interprétés, en Gaspésie, comme représentant l’âge de la mise en place de la nappe ophiolitique et de sa semelle métamorphique sur la marge continentale. Abstact Geochronological studies on the timing of deformation and metamorphism along the Laurentian margin have shown that the ages of metamorphic events change along-strike within the Newfoundland – southern Quebec segment of the Canadian Appalachians. The Gaspé Peninsula is located at mid-point of the two extremities of this segment. New single-grain laser 40 Ar/ 39 Ar plateau ages solely reflect latest Middle–Late Ordovician metamorphism. Samples taken within the internal Humber zone in the Shickshock Group rocks yield 40 Ar/ 39 Ar muscovite and hornblende ages ranging from 457 to 454 Ma. Samples from the Amphibolite du Diable, the metamorphic sole of the Mont Albert ophiolite, yield 40 Ar/ 39 Ar muscovite and hornblende ages ranging from 459 to 457 Ma. Ordovician ages of the internal Humber zone are consistent with 40 Ar/ 39 Ar ages from southern Quebec and are interpreted as the result of the emplacement onto the margin of ... |
format |
Article in Journal/Newspaper |
author |
Pincivy, Alix Malo, Michel Ruffet, Gilles Tremblay, Alain Sacks, Paul E. |
author_facet |
Pincivy, Alix Malo, Michel Ruffet, Gilles Tremblay, Alain Sacks, Paul E. |
author_sort |
Pincivy, Alix |
title |
Regional metamorphism of the Appalachian Humber zone of Gaspé Peninsula: 40 Ar/ 39 Ar evidence for crustal thickening during the Taconian orogeny. |
title_short |
Regional metamorphism of the Appalachian Humber zone of Gaspé Peninsula: 40 Ar/ 39 Ar evidence for crustal thickening during the Taconian orogeny. |
title_full |
Regional metamorphism of the Appalachian Humber zone of Gaspé Peninsula: 40 Ar/ 39 Ar evidence for crustal thickening during the Taconian orogeny. |
title_fullStr |
Regional metamorphism of the Appalachian Humber zone of Gaspé Peninsula: 40 Ar/ 39 Ar evidence for crustal thickening during the Taconian orogeny. |
title_full_unstemmed |
Regional metamorphism of the Appalachian Humber zone of Gaspé Peninsula: 40 Ar/ 39 Ar evidence for crustal thickening during the Taconian orogeny. |
title_sort |
regional metamorphism of the appalachian humber zone of gaspé peninsula: 40 ar/ 39 ar evidence for crustal thickening during the taconian orogeny. |
publishDate |
2003 |
url |
https://espace.inrs.ca/id/eprint/11058/ https://doi.org/10.1139/E02-076 |
geographic |
Canada |
geographic_facet |
Canada |
genre |
Newfoundland Terre-Neuve |
genre_facet |
Newfoundland Terre-Neuve |
op_relation |
Pincivy, Alix, Malo, Michel, Ruffet, Gilles, Tremblay, Alain et Sacks, Paul E. (2003). Regional metamorphism of the Appalachian Humber zone of Gaspé Peninsula: 40Ar/39Ar evidence for crustal thickening during the Taconian orogeny. Canadian Journal of Earth Sciences , vol. 40 , nº 2. p. 301-315. DOI:10.1139/E02-076 <https://doi.org/10.1139/E02-076>. doi:10.1139/E02-076 |
op_doi |
https://doi.org/10.1139/E02-076 |
container_title |
Canadian Journal of Earth Sciences |
container_volume |
40 |
container_issue |
2 |
container_start_page |
301 |
op_container_end_page |
315 |
_version_ |
1766110115435380736 |