Earth Hummocks in the Sunshine Area of the Rocky Mountains, Alberta and British Columbia
Earth hummocks were found on the Continental Divide of the Rocky Mountains in a non-permafrost environment. Many hummocks show involutions of organic layers within 25 cm of the surface, suggesting that the hummocks are still active. The soil material is a non-plastic, silt-textured volcanic ash. Dur...
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1982
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ftunivcalgaryojs:oai:journalhosting.ucalgary.ca:article/65395 2023-05-15T14:19:16+02:00 Earth Hummocks in the Sunshine Area of the Rocky Mountains, Alberta and British Columbia Scotter, George W. Zoltai, S.C. 1982-01-01 application/pdf https://journalhosting.ucalgary.ca/index.php/arctic/article/view/65395 eng eng The Arctic Institute of North America https://journalhosting.ucalgary.ca/index.php/arctic/article/view/65395/49309 https://journalhosting.ucalgary.ca/index.php/arctic/article/view/65395 ARCTIC; Vol. 35 No. 3 (1982): September: 349–455; 411-416 1923-1245 0004-0843 Hummocks Mountains Plant-soil relationships Soil moisture Soil profiles Sunshine region Alberta/British Columbia info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion research-article 1982 ftunivcalgaryojs 2022-03-22T21:22:31Z Earth hummocks were found on the Continental Divide of the Rocky Mountains in a non-permafrost environment. Many hummocks show involutions of organic layers within 25 cm of the surface, suggesting that the hummocks are still active. The soil material is a non-plastic, silt-textured volcanic ash. During brief periods in the spring the upper soil horizons can become super-saturated with water; the soil then becomes liquid, resulting in involutions in the surface layers. This mechanism is generally erosional and it is unlikely that it contributed to the formation of earth hummocks. The hummocks are believed to be relict features that were formed under colder conditions, when permafrost was likely present in the ground.Key words: Rocky Mountains, hummocks, permafrost, soil horizons Mots clés: Rocheuses, monticules, pergélisol, horizons du sol Article in Journal/Newspaper Arctic permafrost pergélisol University of Calgary Journal Hosting ARCTIC 35 3 |
institution |
Open Polar |
collection |
University of Calgary Journal Hosting |
op_collection_id |
ftunivcalgaryojs |
language |
English |
topic |
Hummocks Mountains Plant-soil relationships Soil moisture Soil profiles Sunshine region Alberta/British Columbia |
spellingShingle |
Hummocks Mountains Plant-soil relationships Soil moisture Soil profiles Sunshine region Alberta/British Columbia Scotter, George W. Zoltai, S.C. Earth Hummocks in the Sunshine Area of the Rocky Mountains, Alberta and British Columbia |
topic_facet |
Hummocks Mountains Plant-soil relationships Soil moisture Soil profiles Sunshine region Alberta/British Columbia |
description |
Earth hummocks were found on the Continental Divide of the Rocky Mountains in a non-permafrost environment. Many hummocks show involutions of organic layers within 25 cm of the surface, suggesting that the hummocks are still active. The soil material is a non-plastic, silt-textured volcanic ash. During brief periods in the spring the upper soil horizons can become super-saturated with water; the soil then becomes liquid, resulting in involutions in the surface layers. This mechanism is generally erosional and it is unlikely that it contributed to the formation of earth hummocks. The hummocks are believed to be relict features that were formed under colder conditions, when permafrost was likely present in the ground.Key words: Rocky Mountains, hummocks, permafrost, soil horizons Mots clés: Rocheuses, monticules, pergélisol, horizons du sol |
format |
Article in Journal/Newspaper |
author |
Scotter, George W. Zoltai, S.C. |
author_facet |
Scotter, George W. Zoltai, S.C. |
author_sort |
Scotter, George W. |
title |
Earth Hummocks in the Sunshine Area of the Rocky Mountains, Alberta and British Columbia |
title_short |
Earth Hummocks in the Sunshine Area of the Rocky Mountains, Alberta and British Columbia |
title_full |
Earth Hummocks in the Sunshine Area of the Rocky Mountains, Alberta and British Columbia |
title_fullStr |
Earth Hummocks in the Sunshine Area of the Rocky Mountains, Alberta and British Columbia |
title_full_unstemmed |
Earth Hummocks in the Sunshine Area of the Rocky Mountains, Alberta and British Columbia |
title_sort |
earth hummocks in the sunshine area of the rocky mountains, alberta and british columbia |
publisher |
The Arctic Institute of North America |
publishDate |
1982 |
url |
https://journalhosting.ucalgary.ca/index.php/arctic/article/view/65395 |
genre |
Arctic permafrost pergélisol |
genre_facet |
Arctic permafrost pergélisol |
op_source |
ARCTIC; Vol. 35 No. 3 (1982): September: 349–455; 411-416 1923-1245 0004-0843 |
op_relation |
https://journalhosting.ucalgary.ca/index.php/arctic/article/view/65395/49309 https://journalhosting.ucalgary.ca/index.php/arctic/article/view/65395 |
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ARCTIC |
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35 |
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