Southeastward ice flow in central Quebec and its paleogeographic significance
Directional glacial erosional marks located systematically on the southwest side of rock outcrops in the Chibougamau and Lac Mistassini areas in west-central Quebec indicate unequivocally a sustained regional event of southeast ice flow prior to the last or regional southwest flow from New Quebec. S...
Published in: | Canadian Journal of Earth Sciences |
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Language: | English |
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Canadian Science Publishing
1985
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Online Access: | http://dx.doi.org/10.1139/e85-159 http://www.nrcresearchpress.com/doi/pdf/10.1139/e85-159 |
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crcansciencepubl:10.1139/e85-159 2024-09-09T19:44:04+00:00 Southeastward ice flow in central Quebec and its paleogeographic significance Bouchard, Michel A. Martineau, Ghismond 1985 http://dx.doi.org/10.1139/e85-159 http://www.nrcresearchpress.com/doi/pdf/10.1139/e85-159 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Earth Sciences volume 22, issue 10, page 1536-1541 ISSN 0008-4077 1480-3313 journal-article 1985 crcansciencepubl https://doi.org/10.1139/e85-159 2024-07-25T04:10:08Z Directional glacial erosional marks located systematically on the southwest side of rock outcrops in the Chibougamau and Lac Mistassini areas in west-central Quebec indicate unequivocally a sustained regional event of southeast ice flow prior to the last or regional southwest flow from New Quebec. Striations from the former ice flow are consistently oriented at around 120° azimuth and are observed, albeit at scattered occurrences, within an area covering thousands of square kilometres. Although the age of the southeast ice flow event cannot be determined, it is considered more likely to be of Wisconsinan age on the basis of the well preserved state of its features and the lack of deep weathering on surfaces where these are observed. It is suggested that the early ice flow event might have been fed by a local outflow centre on the east side of James Bay, perhaps extending as a ridge east of Hudson Bay. Article in Journal/Newspaper Hudson Bay James Bay Canadian Science Publishing Hudson Hudson Bay Canadian Journal of Earth Sciences 22 10 1536 1541 |
institution |
Open Polar |
collection |
Canadian Science Publishing |
op_collection_id |
crcansciencepubl |
language |
English |
description |
Directional glacial erosional marks located systematically on the southwest side of rock outcrops in the Chibougamau and Lac Mistassini areas in west-central Quebec indicate unequivocally a sustained regional event of southeast ice flow prior to the last or regional southwest flow from New Quebec. Striations from the former ice flow are consistently oriented at around 120° azimuth and are observed, albeit at scattered occurrences, within an area covering thousands of square kilometres. Although the age of the southeast ice flow event cannot be determined, it is considered more likely to be of Wisconsinan age on the basis of the well preserved state of its features and the lack of deep weathering on surfaces where these are observed. It is suggested that the early ice flow event might have been fed by a local outflow centre on the east side of James Bay, perhaps extending as a ridge east of Hudson Bay. |
format |
Article in Journal/Newspaper |
author |
Bouchard, Michel A. Martineau, Ghismond |
spellingShingle |
Bouchard, Michel A. Martineau, Ghismond Southeastward ice flow in central Quebec and its paleogeographic significance |
author_facet |
Bouchard, Michel A. Martineau, Ghismond |
author_sort |
Bouchard, Michel A. |
title |
Southeastward ice flow in central Quebec and its paleogeographic significance |
title_short |
Southeastward ice flow in central Quebec and its paleogeographic significance |
title_full |
Southeastward ice flow in central Quebec and its paleogeographic significance |
title_fullStr |
Southeastward ice flow in central Quebec and its paleogeographic significance |
title_full_unstemmed |
Southeastward ice flow in central Quebec and its paleogeographic significance |
title_sort |
southeastward ice flow in central quebec and its paleogeographic significance |
publisher |
Canadian Science Publishing |
publishDate |
1985 |
url |
http://dx.doi.org/10.1139/e85-159 http://www.nrcresearchpress.com/doi/pdf/10.1139/e85-159 |
geographic |
Hudson Hudson Bay |
geographic_facet |
Hudson Hudson Bay |
genre |
Hudson Bay James Bay |
genre_facet |
Hudson Bay James Bay |
op_source |
Canadian Journal of Earth Sciences volume 22, issue 10, page 1536-1541 ISSN 0008-4077 1480-3313 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/e85-159 |
container_title |
Canadian Journal of Earth Sciences |
container_volume |
22 |
container_issue |
10 |
container_start_page |
1536 |
op_container_end_page |
1541 |
_version_ |
1809913808572907520 |