Glacial Lake Coppermine, north-central District of Mackenzie, Northwest Territories
Field observation along the Coppermine River valley has revealed extensive deposits related to the presence of a major lake in late-glacial time. Numerous deltas determine a water level at approximately 360 m above sea level (asl). It is proposed that this former lake be called Glacial Lake Coppermi...
Published in: | Canadian Journal of Earth Sciences |
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Language: | English |
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Canadian Science Publishing
1980
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Online Access: | http://dx.doi.org/10.1139/e80-137 http://www.nrcresearchpress.com/doi/pdf/10.1139/e80-137 |
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crcansciencepubl:10.1139/e80-137 2023-12-17T10:28:57+01:00 Glacial Lake Coppermine, north-central District of Mackenzie, Northwest Territories St-Onge, Denis A. 1980 http://dx.doi.org/10.1139/e80-137 http://www.nrcresearchpress.com/doi/pdf/10.1139/e80-137 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Earth Sciences volume 17, issue 9, page 1310-1315 ISSN 0008-4077 1480-3313 General Earth and Planetary Sciences journal-article 1980 crcansciencepubl https://doi.org/10.1139/e80-137 2023-11-19T13:38:59Z Field observation along the Coppermine River valley has revealed extensive deposits related to the presence of a major lake in late-glacial time. Numerous deltas determine a water level at approximately 360 m above sea level (asl). It is proposed that this former lake be called Glacial Lake Coppermine. Air-photo interpretation indicates that the valley was dammed by a glacial lobe covering the lowlands north of Coppermine Mountains and Dismal Lakes. During a high phase, the lake drained westward through the Dismal Lakes system to a high-level Great Bear Lake. Organic material, found in sediments infilling a river channel cut into deltaic sediments resting on top of a thick varve sequence, has yielded two 14 C dates: 8400 ± 80 (GSC-2959) on wood at the base of the channel and 3210 ± 60 (GSC-2998) on peat at the top of the fill. Article in Journal/Newspaper Coppermine River Great Bear Lake Northwest Territories Canadian Science Publishing (via Crossref) Northwest Territories Glacial Lake ENVELOPE(-129.463,-129.463,58.259,58.259) Great Bear Lake ENVELOPE(-120.753,-120.753,65.834,65.834) Dismal Lakes ENVELOPE(-117.120,-117.120,67.434,67.434) Coppermine Mountains ENVELOPE(-116.003,-116.003,67.301,67.301) Canadian Journal of Earth Sciences 17 9 1310 1315 |
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 St-Onge, Denis A. Glacial Lake Coppermine, north-central District of Mackenzie, Northwest Territories |
topic_facet |
General Earth and Planetary Sciences |
description |
Field observation along the Coppermine River valley has revealed extensive deposits related to the presence of a major lake in late-glacial time. Numerous deltas determine a water level at approximately 360 m above sea level (asl). It is proposed that this former lake be called Glacial Lake Coppermine. Air-photo interpretation indicates that the valley was dammed by a glacial lobe covering the lowlands north of Coppermine Mountains and Dismal Lakes. During a high phase, the lake drained westward through the Dismal Lakes system to a high-level Great Bear Lake. Organic material, found in sediments infilling a river channel cut into deltaic sediments resting on top of a thick varve sequence, has yielded two 14 C dates: 8400 ± 80 (GSC-2959) on wood at the base of the channel and 3210 ± 60 (GSC-2998) on peat at the top of the fill. |
format |
Article in Journal/Newspaper |
author |
St-Onge, Denis A. |
author_facet |
St-Onge, Denis A. |
author_sort |
St-Onge, Denis A. |
title |
Glacial Lake Coppermine, north-central District of Mackenzie, Northwest Territories |
title_short |
Glacial Lake Coppermine, north-central District of Mackenzie, Northwest Territories |
title_full |
Glacial Lake Coppermine, north-central District of Mackenzie, Northwest Territories |
title_fullStr |
Glacial Lake Coppermine, north-central District of Mackenzie, Northwest Territories |
title_full_unstemmed |
Glacial Lake Coppermine, north-central District of Mackenzie, Northwest Territories |
title_sort |
glacial lake coppermine, north-central district of mackenzie, northwest territories |
publisher |
Canadian Science Publishing |
publishDate |
1980 |
url |
http://dx.doi.org/10.1139/e80-137 http://www.nrcresearchpress.com/doi/pdf/10.1139/e80-137 |
long_lat |
ENVELOPE(-129.463,-129.463,58.259,58.259) ENVELOPE(-120.753,-120.753,65.834,65.834) ENVELOPE(-117.120,-117.120,67.434,67.434) ENVELOPE(-116.003,-116.003,67.301,67.301) |
geographic |
Northwest Territories Glacial Lake Great Bear Lake Dismal Lakes Coppermine Mountains |
geographic_facet |
Northwest Territories Glacial Lake Great Bear Lake Dismal Lakes Coppermine Mountains |
genre |
Coppermine River Great Bear Lake Northwest Territories |
genre_facet |
Coppermine River Great Bear Lake Northwest Territories |
op_source |
Canadian Journal of Earth Sciences volume 17, issue 9, page 1310-1315 ISSN 0008-4077 1480-3313 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/e80-137 |
container_title |
Canadian Journal of Earth Sciences |
container_volume |
17 |
container_issue |
9 |
container_start_page |
1310 |
op_container_end_page |
1315 |
_version_ |
1785581205108817920 |