Rock glacier types and their drainage systems, Grizzly Creek, Yukon Territory
Moraine rock glaciers, talus-derived rock glaciers, and avalanche rock glaciers are described from Grizzly Creek. The main moraine rock glacier has a number of flow lobes of different ages as indicated by lichen and vegetation development. On many of these surfaces there is evidence for recent movem...
Published in: | Canadian Journal of Earth Sciences |
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Language: | English |
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Canadian Science Publishing
1978
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crcansciencepubl:10.1139/e78-155 2023-12-17T10:31:40+01:00 Rock glacier types and their drainage systems, Grizzly Creek, Yukon Territory Johnson, P. G. 1978 http://dx.doi.org/10.1139/e78-155 http://www.nrcresearchpress.com/doi/pdf/10.1139/e78-155 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Earth Sciences volume 15, issue 9, page 1496-1507 ISSN 0008-4077 1480-3313 General Earth and Planetary Sciences journal-article 1978 crcansciencepubl https://doi.org/10.1139/e78-155 2023-11-19T13:38:51Z Moraine rock glaciers, talus-derived rock glaciers, and avalanche rock glaciers are described from Grizzly Creek. The main moraine rock glacier has a number of flow lobes of different ages as indicated by lichen and vegetation development. On many of these surfaces there is evidence for recent movement in the form of overridden vegetation surfaces and unstable frontal slopes. Meltwater drainage through the landform is slow, allowing precipitation of the suspended sediment load, and as resurgences do not occur for all of the inflow the possibilities of addition to the ice core or drainage below Grizzly Creek gravels are discussed. The talus-derived rock glaciers differ morphologically from the moraine forms with far greater complexity of the flow ridges but with fewer flow episodes indicated. Drainage through these forms is slow and variable and indicates percolation of meltwater over an impermeable surface within the form. Avalanche rock glaciers by contrast are relatively simple morphologically and the extension from the base of the talus is attributed to ice content derived from the avalanches. Article in Journal/Newspaper ice core Yukon Canadian Science Publishing (via Crossref) Yukon Canadian Journal of Earth Sciences 15 9 1496 1507 |
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 Johnson, P. G. Rock glacier types and their drainage systems, Grizzly Creek, Yukon Territory |
topic_facet |
General Earth and Planetary Sciences |
description |
Moraine rock glaciers, talus-derived rock glaciers, and avalanche rock glaciers are described from Grizzly Creek. The main moraine rock glacier has a number of flow lobes of different ages as indicated by lichen and vegetation development. On many of these surfaces there is evidence for recent movement in the form of overridden vegetation surfaces and unstable frontal slopes. Meltwater drainage through the landform is slow, allowing precipitation of the suspended sediment load, and as resurgences do not occur for all of the inflow the possibilities of addition to the ice core or drainage below Grizzly Creek gravels are discussed. The talus-derived rock glaciers differ morphologically from the moraine forms with far greater complexity of the flow ridges but with fewer flow episodes indicated. Drainage through these forms is slow and variable and indicates percolation of meltwater over an impermeable surface within the form. Avalanche rock glaciers by contrast are relatively simple morphologically and the extension from the base of the talus is attributed to ice content derived from the avalanches. |
format |
Article in Journal/Newspaper |
author |
Johnson, P. G. |
author_facet |
Johnson, P. G. |
author_sort |
Johnson, P. G. |
title |
Rock glacier types and their drainage systems, Grizzly Creek, Yukon Territory |
title_short |
Rock glacier types and their drainage systems, Grizzly Creek, Yukon Territory |
title_full |
Rock glacier types and their drainage systems, Grizzly Creek, Yukon Territory |
title_fullStr |
Rock glacier types and their drainage systems, Grizzly Creek, Yukon Territory |
title_full_unstemmed |
Rock glacier types and their drainage systems, Grizzly Creek, Yukon Territory |
title_sort |
rock glacier types and their drainage systems, grizzly creek, yukon territory |
publisher |
Canadian Science Publishing |
publishDate |
1978 |
url |
http://dx.doi.org/10.1139/e78-155 http://www.nrcresearchpress.com/doi/pdf/10.1139/e78-155 |
geographic |
Yukon |
geographic_facet |
Yukon |
genre |
ice core Yukon |
genre_facet |
ice core Yukon |
op_source |
Canadian Journal of Earth Sciences volume 15, issue 9, page 1496-1507 ISSN 0008-4077 1480-3313 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/e78-155 |
container_title |
Canadian Journal of Earth Sciences |
container_volume |
15 |
container_issue |
9 |
container_start_page |
1496 |
op_container_end_page |
1507 |
_version_ |
1785585028008247296 |