Geochemistry of Silurian-Devonian alkaline basalt suites from the Gaspé Peninsula, Quebec Appalachians
Products of Late Silurian and Early Devonian volcanism in the Northern Appalachians are well exposed in the Chaleurs Bay area of the Gaspé Peninsula. The volcanic association Is dominated by plagioclase basalts and andesltes, and includes pyroclastic flows of dacltic and rhyolitic compositi...
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Atlantic Geoscience Society
1984
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ftuninewbrunojs:oai:ojs.journals.lib.unb.ca:article/1577 2023-05-15T17:22:50+02:00 Geochemistry of Silurian-Devonian alkaline basalt suites from the Gaspé Peninsula, Quebec Appalachians Laurent, R. Bélanger, J. 1984-08-08 application/pdf https://journals.lib.unb.ca/index.php/ag/article/view/1577 eng eng Atlantic Geoscience Society https://journals.lib.unb.ca/index.php/ag/article/view/1577/1943 https://journals.lib.unb.ca/index.php/ag/article/view/1577 Copyright (c) 2015 Atlantic Geology Atlantic Geoscience; Vol. 20 No. 2 (1984) 2564-2987 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion research-article 1984 ftuninewbrunojs 2022-07-11T11:41:23Z Products of Late Silurian and Early Devonian volcanism in the Northern Appalachians are well exposed in the Chaleurs Bay area of the Gaspé Peninsula. The volcanic association Is dominated by plagioclase basalts and andesltes, and includes pyroclastic flows of dacltic and rhyolitic composition. Major and trace-element chemical analyzes of 174 rocks show that the volcanic association derives from alkaline and high-alumina basalt magmas. The basalts are usually olivine normative and high in A12O3, TiO2, P2O5 and in incompatible elements such as Y and Zr. They follow the course of a calc-alkaline differentiation trend. This volcanism is interpreted to have been related genetically to a regime of tectonic compression, and controlled structurally by fault zones. The Quaternary volcanism associated with the major transcurrent fault zones of northern Anatolia and Iran within the Alpine Orogen provides a modern analog to the Silurian-Devonian volcanism of the Gaspé Peninsula and Newfoundland. RÉSUMÉ Les produits du volcanisme silurien et dévonien des Appal aches du Nord sont bien exposés dans la région de la Baie des Chaleurs de la péninsule gaspéslenne. L'association volcanique comprend sur-tout des basaltes plagioclasiques et des andesltes, tout en incluant une quantite plus faible de coulées pyroclastlques de composition dacitique et rhyolitique. Les analyses chimiques des éléments majeurs et traces de 174 roches indiquent que l'association volcanique dérive de magmas de type basatte alcalin et basalte alumineux. Les basaltes ont fréquemment de l'olivine normative, et ils sont riches en A12O3, TiO2, P2O5, ainsi qu'en éléments incompatibles tels que Y et Zr. Ils suivent une tendance de différenciatlon de type calco-alcaline. Ce volcanisme est interprète comme étant génétiquement lie à un régime tectonique de ... Article in Journal/Newspaper Newfoundland University of New Brunswick: Centre for Digital Scholarship Journals Atlantic Geology 20 2 |
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Products of Late Silurian and Early Devonian volcanism in the Northern Appalachians are well exposed in the Chaleurs Bay area of the Gaspé Peninsula. The volcanic association Is dominated by plagioclase basalts and andesltes, and includes pyroclastic flows of dacltic and rhyolitic composition. Major and trace-element chemical analyzes of 174 rocks show that the volcanic association derives from alkaline and high-alumina basalt magmas. The basalts are usually olivine normative and high in A12O3, TiO2, P2O5 and in incompatible elements such as Y and Zr. They follow the course of a calc-alkaline differentiation trend. This volcanism is interpreted to have been related genetically to a regime of tectonic compression, and controlled structurally by fault zones. The Quaternary volcanism associated with the major transcurrent fault zones of northern Anatolia and Iran within the Alpine Orogen provides a modern analog to the Silurian-Devonian volcanism of the Gaspé Peninsula and Newfoundland. RÉSUMÉ Les produits du volcanisme silurien et dévonien des Appal aches du Nord sont bien exposés dans la région de la Baie des Chaleurs de la péninsule gaspéslenne. L'association volcanique comprend sur-tout des basaltes plagioclasiques et des andesltes, tout en incluant une quantite plus faible de coulées pyroclastlques de composition dacitique et rhyolitique. Les analyses chimiques des éléments majeurs et traces de 174 roches indiquent que l'association volcanique dérive de magmas de type basatte alcalin et basalte alumineux. Les basaltes ont fréquemment de l'olivine normative, et ils sont riches en A12O3, TiO2, P2O5, ainsi qu'en éléments incompatibles tels que Y et Zr. Ils suivent une tendance de différenciatlon de type calco-alcaline. Ce volcanisme est interprète comme étant génétiquement lie à un régime tectonique de ... |
format |
Article in Journal/Newspaper |
author |
Laurent, R. Bélanger, J. |
spellingShingle |
Laurent, R. Bélanger, J. Geochemistry of Silurian-Devonian alkaline basalt suites from the Gaspé Peninsula, Quebec Appalachians |
author_facet |
Laurent, R. Bélanger, J. |
author_sort |
Laurent, R. |
title |
Geochemistry of Silurian-Devonian alkaline basalt suites from the Gaspé Peninsula, Quebec Appalachians |
title_short |
Geochemistry of Silurian-Devonian alkaline basalt suites from the Gaspé Peninsula, Quebec Appalachians |
title_full |
Geochemistry of Silurian-Devonian alkaline basalt suites from the Gaspé Peninsula, Quebec Appalachians |
title_fullStr |
Geochemistry of Silurian-Devonian alkaline basalt suites from the Gaspé Peninsula, Quebec Appalachians |
title_full_unstemmed |
Geochemistry of Silurian-Devonian alkaline basalt suites from the Gaspé Peninsula, Quebec Appalachians |
title_sort |
geochemistry of silurian-devonian alkaline basalt suites from the gaspé peninsula, quebec appalachians |
publisher |
Atlantic Geoscience Society |
publishDate |
1984 |
url |
https://journals.lib.unb.ca/index.php/ag/article/view/1577 |
genre |
Newfoundland |
genre_facet |
Newfoundland |
op_source |
Atlantic Geoscience; Vol. 20 No. 2 (1984) 2564-2987 |
op_relation |
https://journals.lib.unb.ca/index.php/ag/article/view/1577/1943 https://journals.lib.unb.ca/index.php/ag/article/view/1577 |
op_rights |
Copyright (c) 2015 Atlantic Geology |
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