Basal debris entrainment and transport in glaciers of southwestern Bylot Island, Canadian Arctic
ABSTRACT. Glaciers on southwestern Bylot Island in the Canadian Arctic flow from an alpine setting in high-grade crystalline Archean terrane, on to coastal lowlands underlain by clastic sedimentary strata of Cretaceous to Tertiary age. We have used the contrasting mineralogy of the substrate as a to...
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Carleton University, Ottawa, Canada
1996
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ftuppsalauniv:oai:DiVA.org:uu-300891 2023-05-15T13:29:19+02:00 Basal debris entrainment and transport in glaciers of southwestern Bylot Island, Canadian Arctic Zdanowicz, Christian Michel, F. A. Shilts, W. W. 1996 application/pdf http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-300891 https://doi.org/10.3198/1996AoG22-1-107-113 eng eng Carleton University, Ottawa, Canada Geologival Survey of Canada Annals of Glaciology, 0260-3055, 1996, 22:1, s. 107-113 http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-300891 doi:10.3198/1996AoG22-1-107-113 Scopus 2-s2.0-0030436026 info:eu-repo/semantics/openAccess Glaciers sedimentology mineralogy geochemistry till Physical Geography Naturgeografi Earth and Related Environmental Sciences Geovetenskap och miljövetenskap Article in journal info:eu-repo/semantics/article text 1996 ftuppsalauniv https://doi.org/10.3198/1996AoG22-1-107-113 2023-02-23T21:45:59Z ABSTRACT. Glaciers on southwestern Bylot Island in the Canadian Arctic flow from an alpine setting in high-grade crystalline Archean terrane, on to coastal lowlands underlain by clastic sedimentary strata of Cretaceous to Tertiary age. We have used the contrasting mineralogy of the substrate as a tool to study subglacialentrainment and transport of debris in two large piedmont glaciers on Bylot Island. High chlorite/ and mica-illite/smectite ratios indicate that most basal debris is derived from crystalline rocks underlying the upper reaches of the glaciers. The subglacial accretion of Cretaceous-Tertiary sediments appears restricted to the lowermost part ofthe basal zone and is most noticeable near the glaciers' termini. lce associated with discrete silty-sandy debris layers is characterized by an isotopic signature indicative of refreezing of meltwater at the glacier sole. The compositional, textural and isotopic characteristics of basal sediment and ice lead us to conclude that subglacial entrainment through basal ice accretion occurs in both the upper and marginal parts of the glaciers Article in Journal/Newspaper Annals of Glaciology Arctic Bylot Island Uppsala University: Publications (DiVA) Arctic Bylot Island |
institution |
Open Polar |
collection |
Uppsala University: Publications (DiVA) |
op_collection_id |
ftuppsalauniv |
language |
English |
topic |
Glaciers sedimentology mineralogy geochemistry till Physical Geography Naturgeografi Earth and Related Environmental Sciences Geovetenskap och miljövetenskap |
spellingShingle |
Glaciers sedimentology mineralogy geochemistry till Physical Geography Naturgeografi Earth and Related Environmental Sciences Geovetenskap och miljövetenskap Zdanowicz, Christian Michel, F. A. Shilts, W. W. Basal debris entrainment and transport in glaciers of southwestern Bylot Island, Canadian Arctic |
topic_facet |
Glaciers sedimentology mineralogy geochemistry till Physical Geography Naturgeografi Earth and Related Environmental Sciences Geovetenskap och miljövetenskap |
description |
ABSTRACT. Glaciers on southwestern Bylot Island in the Canadian Arctic flow from an alpine setting in high-grade crystalline Archean terrane, on to coastal lowlands underlain by clastic sedimentary strata of Cretaceous to Tertiary age. We have used the contrasting mineralogy of the substrate as a tool to study subglacialentrainment and transport of debris in two large piedmont glaciers on Bylot Island. High chlorite/ and mica-illite/smectite ratios indicate that most basal debris is derived from crystalline rocks underlying the upper reaches of the glaciers. The subglacial accretion of Cretaceous-Tertiary sediments appears restricted to the lowermost part ofthe basal zone and is most noticeable near the glaciers' termini. lce associated with discrete silty-sandy debris layers is characterized by an isotopic signature indicative of refreezing of meltwater at the glacier sole. The compositional, textural and isotopic characteristics of basal sediment and ice lead us to conclude that subglacial entrainment through basal ice accretion occurs in both the upper and marginal parts of the glaciers |
format |
Article in Journal/Newspaper |
author |
Zdanowicz, Christian Michel, F. A. Shilts, W. W. |
author_facet |
Zdanowicz, Christian Michel, F. A. Shilts, W. W. |
author_sort |
Zdanowicz, Christian |
title |
Basal debris entrainment and transport in glaciers of southwestern Bylot Island, Canadian Arctic |
title_short |
Basal debris entrainment and transport in glaciers of southwestern Bylot Island, Canadian Arctic |
title_full |
Basal debris entrainment and transport in glaciers of southwestern Bylot Island, Canadian Arctic |
title_fullStr |
Basal debris entrainment and transport in glaciers of southwestern Bylot Island, Canadian Arctic |
title_full_unstemmed |
Basal debris entrainment and transport in glaciers of southwestern Bylot Island, Canadian Arctic |
title_sort |
basal debris entrainment and transport in glaciers of southwestern bylot island, canadian arctic |
publisher |
Carleton University, Ottawa, Canada |
publishDate |
1996 |
url |
http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-300891 https://doi.org/10.3198/1996AoG22-1-107-113 |
geographic |
Arctic Bylot Island |
geographic_facet |
Arctic Bylot Island |
genre |
Annals of Glaciology Arctic Bylot Island |
genre_facet |
Annals of Glaciology Arctic Bylot Island |
op_relation |
Annals of Glaciology, 0260-3055, 1996, 22:1, s. 107-113 http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-300891 doi:10.3198/1996AoG22-1-107-113 Scopus 2-s2.0-0030436026 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.3198/1996AoG22-1-107-113 |
_version_ |
1765999882931273728 |