Deglaciation of the Cordillera of Western Canada at the end of the Pleistocene
Nearly all of what is now British Columbia and adjacent areas were covered by an ice sheet at the maximum of the Last Glaciation (MIS 2) about 18,000 years ago. By 11,000 years ago, the Cordilleran Ice Sheet had disappeared, a victim of warming climate, eustatic sea-level rise along its western marg...
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Universidad de La Rioja
2017
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Online Access: | https://doi.org/10.18172/cig.3232 https://doaj.org/article/0693500177b44285b81f0574c2d98253 |
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fttriple:oai:gotriple.eu:oai:doaj.org/article:0693500177b44285b81f0574c2d98253 2023-05-15T16:40:06+02:00 Deglaciation of the Cordillera of Western Canada at the end of the Pleistocene J.J. Clague 2017-09-01 https://doi.org/10.18172/cig.3232 https://doaj.org/article/0693500177b44285b81f0574c2d98253 en es eng spa Universidad de La Rioja 0211-6820 1697-9540 doi:10.18172/cig.3232 https://doaj.org/article/0693500177b44285b81f0574c2d98253 undefined Cuadernos de Investigación Geográfica, Vol 43, Iss 2, Pp 449-466 (2017) deglaciation cordilleran ice sheet british columbia yukon territory geochronology geo envir Journal Article https://vocabularies.coar-repositories.org/resource_types/c_6501/ 2017 fttriple https://doi.org/10.18172/cig.3232 2023-01-22T19:23:56Z Nearly all of what is now British Columbia and adjacent areas were covered by an ice sheet at the maximum of the Last Glaciation (MIS 2) about 18,000 years ago. By 11,000 years ago, the Cordilleran Ice Sheet had disappeared, a victim of warming climate, eustatic sea-level rise along its western margin, and perhaps a reduction in precipitation. Deglaciation proceeded by frontal retreat at the periphery of the ice sheet and by downwasting, complex frontal retreat, and localized stagnation in its interior areas. The chronology of deglaciation is constrained, albeit with inherent dating errors, by AMS radiocarbon and 10Be surface exposure ages. High-elevation sites at the western margin of the British Columbia Interior Plateau, east of the Coast Mountains, became ice-free between about 15,000 and 12,000 years ago. Ice cover in the southern Coast Mountains was sufficiently extensive during the Younger Dryas Chronozone (12,900-11,700 years ago) that glaciers advanced into low-lying areas north and east of Vancouver. At the same time, however, a labyrinth of dead or dying tongues of glacier ice covered some interior valleys. By 11,000 years ago, ice cover in the Canadian Cordillera was no more extensive than it is today. Article in Journal/Newspaper Ice Sheet Yukon Unknown British Columbia ENVELOPE(-125.003,-125.003,54.000,54.000) Canada Labyrinth ENVELOPE(160.833,160.833,-77.550,-77.550) Yukon Cuadernos de Investigación Geográfica 43 2 449 466 |
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Open Polar |
collection |
Unknown |
op_collection_id |
fttriple |
language |
English Spanish |
topic |
deglaciation cordilleran ice sheet british columbia yukon territory geochronology geo envir |
spellingShingle |
deglaciation cordilleran ice sheet british columbia yukon territory geochronology geo envir J.J. Clague Deglaciation of the Cordillera of Western Canada at the end of the Pleistocene |
topic_facet |
deglaciation cordilleran ice sheet british columbia yukon territory geochronology geo envir |
description |
Nearly all of what is now British Columbia and adjacent areas were covered by an ice sheet at the maximum of the Last Glaciation (MIS 2) about 18,000 years ago. By 11,000 years ago, the Cordilleran Ice Sheet had disappeared, a victim of warming climate, eustatic sea-level rise along its western margin, and perhaps a reduction in precipitation. Deglaciation proceeded by frontal retreat at the periphery of the ice sheet and by downwasting, complex frontal retreat, and localized stagnation in its interior areas. The chronology of deglaciation is constrained, albeit with inherent dating errors, by AMS radiocarbon and 10Be surface exposure ages. High-elevation sites at the western margin of the British Columbia Interior Plateau, east of the Coast Mountains, became ice-free between about 15,000 and 12,000 years ago. Ice cover in the southern Coast Mountains was sufficiently extensive during the Younger Dryas Chronozone (12,900-11,700 years ago) that glaciers advanced into low-lying areas north and east of Vancouver. At the same time, however, a labyrinth of dead or dying tongues of glacier ice covered some interior valleys. By 11,000 years ago, ice cover in the Canadian Cordillera was no more extensive than it is today. |
format |
Article in Journal/Newspaper |
author |
J.J. Clague |
author_facet |
J.J. Clague |
author_sort |
J.J. Clague |
title |
Deglaciation of the Cordillera of Western Canada at the end of the Pleistocene |
title_short |
Deglaciation of the Cordillera of Western Canada at the end of the Pleistocene |
title_full |
Deglaciation of the Cordillera of Western Canada at the end of the Pleistocene |
title_fullStr |
Deglaciation of the Cordillera of Western Canada at the end of the Pleistocene |
title_full_unstemmed |
Deglaciation of the Cordillera of Western Canada at the end of the Pleistocene |
title_sort |
deglaciation of the cordillera of western canada at the end of the pleistocene |
publisher |
Universidad de La Rioja |
publishDate |
2017 |
url |
https://doi.org/10.18172/cig.3232 https://doaj.org/article/0693500177b44285b81f0574c2d98253 |
long_lat |
ENVELOPE(-125.003,-125.003,54.000,54.000) ENVELOPE(160.833,160.833,-77.550,-77.550) |
geographic |
British Columbia Canada Labyrinth Yukon |
geographic_facet |
British Columbia Canada Labyrinth Yukon |
genre |
Ice Sheet Yukon |
genre_facet |
Ice Sheet Yukon |
op_source |
Cuadernos de Investigación Geográfica, Vol 43, Iss 2, Pp 449-466 (2017) |
op_relation |
0211-6820 1697-9540 doi:10.18172/cig.3232 https://doaj.org/article/0693500177b44285b81f0574c2d98253 |
op_rights |
undefined |
op_doi |
https://doi.org/10.18172/cig.3232 |
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Cuadernos de Investigación Geográfica |
container_volume |
43 |
container_issue |
2 |
container_start_page |
449 |
op_container_end_page |
466 |
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1766030476262244352 |