Un diatrème phréatomagmatique montérégien dans les Appalaches du Québec
A subcircular positive magnetic anomaly and breccias affecting a basanite and its country-rock metasedimentary rocks reveal the presence of a diatreme with a diameter of approximately 420 m, at Eastman, in the Quebec Appalachians. The post-Middle Devonian age, the position in the line of the Montere...
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Language: | English |
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Canadian Science Publishing
1996
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crcansciencepubl:10.1139/e96-048 2023-12-17T10:27:38+01:00 Un diatrème phréatomagmatique montérégien dans les Appalaches du Québec Morin, David Jébrak, Michel Marquis, Robert 1996 http://dx.doi.org/10.1139/e96-048 http://www.nrcresearchpress.com/doi/pdf/10.1139/e96-048 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Earth Sciences volume 33, issue 5, page 649-655 ISSN 0008-4077 1480-3313 General Earth and Planetary Sciences journal-article 1996 crcansciencepubl https://doi.org/10.1139/e96-048 2023-11-19T13:38:50Z A subcircular positive magnetic anomaly and breccias affecting a basanite and its country-rock metasedimentary rocks reveal the presence of a diatreme with a diameter of approximately 420 m, at Eastman, in the Quebec Appalachians. The post-Middle Devonian age, the position in the line of the Monteregian plutons, and the basanite composition, which is comparable to that of the Cretaceous Monteregian alkaline lamprophyres, suggest that the diatreme is related to the Monteregian magmatism. It is located at the junction of two orthogonal tectonic corridors: the north-north-east Baie Verte – Brompton line and an east−west fault network along the prolongation of the Ottawa−Bonnechère Graben. These structures are zones of weakness that probably served as a conduit for the ascending magma and near-surface water to trigger phreatomagmatic eruptions. Article in Journal/Newspaper Baie Verte Canadian Science Publishing (via Crossref) Verte ENVELOPE(141.192,141.192,-66.740,-66.740) Baie Verte ENVELOPE(-56.182,-56.182,49.933,49.933) Eastman ENVELOPE(-62.985,-62.985,-65.166,-65.166) Canadian Journal of Earth Sciences 33 5 649 655 |
institution |
Open Polar |
collection |
Canadian Science Publishing (via Crossref) |
op_collection_id |
crcansciencepubl |
language |
English |
topic |
General Earth and Planetary Sciences |
spellingShingle |
General Earth and Planetary Sciences Morin, David Jébrak, Michel Marquis, Robert Un diatrème phréatomagmatique montérégien dans les Appalaches du Québec |
topic_facet |
General Earth and Planetary Sciences |
description |
A subcircular positive magnetic anomaly and breccias affecting a basanite and its country-rock metasedimentary rocks reveal the presence of a diatreme with a diameter of approximately 420 m, at Eastman, in the Quebec Appalachians. The post-Middle Devonian age, the position in the line of the Monteregian plutons, and the basanite composition, which is comparable to that of the Cretaceous Monteregian alkaline lamprophyres, suggest that the diatreme is related to the Monteregian magmatism. It is located at the junction of two orthogonal tectonic corridors: the north-north-east Baie Verte – Brompton line and an east−west fault network along the prolongation of the Ottawa−Bonnechère Graben. These structures are zones of weakness that probably served as a conduit for the ascending magma and near-surface water to trigger phreatomagmatic eruptions. |
format |
Article in Journal/Newspaper |
author |
Morin, David Jébrak, Michel Marquis, Robert |
author_facet |
Morin, David Jébrak, Michel Marquis, Robert |
author_sort |
Morin, David |
title |
Un diatrème phréatomagmatique montérégien dans les Appalaches du Québec |
title_short |
Un diatrème phréatomagmatique montérégien dans les Appalaches du Québec |
title_full |
Un diatrème phréatomagmatique montérégien dans les Appalaches du Québec |
title_fullStr |
Un diatrème phréatomagmatique montérégien dans les Appalaches du Québec |
title_full_unstemmed |
Un diatrème phréatomagmatique montérégien dans les Appalaches du Québec |
title_sort |
un diatrème phréatomagmatique montérégien dans les appalaches du québec |
publisher |
Canadian Science Publishing |
publishDate |
1996 |
url |
http://dx.doi.org/10.1139/e96-048 http://www.nrcresearchpress.com/doi/pdf/10.1139/e96-048 |
long_lat |
ENVELOPE(141.192,141.192,-66.740,-66.740) ENVELOPE(-56.182,-56.182,49.933,49.933) ENVELOPE(-62.985,-62.985,-65.166,-65.166) |
geographic |
Verte Baie Verte Eastman |
geographic_facet |
Verte Baie Verte Eastman |
genre |
Baie Verte |
genre_facet |
Baie Verte |
op_source |
Canadian Journal of Earth Sciences volume 33, issue 5, page 649-655 ISSN 0008-4077 1480-3313 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/e96-048 |
container_title |
Canadian Journal of Earth Sciences |
container_volume |
33 |
container_issue |
5 |
container_start_page |
649 |
op_container_end_page |
655 |
_version_ |
1785579557179359232 |