Sedimentary structures of cold-climate coastal dunes, Eastern Hudson Bay, Canada
ABSTRACT A study of sedimentary structures of cold‐climate coastal dunes along Eastern Hudson Bay, Canada, showed that in areas of very sparsely vegetated surfaces, tractional sedimentary processes are dominant while in partly and well vegetated areas, grainfall deposition is the dominant sedimentar...
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ftinsu:oai:HAL:hal-04314309v1 2023-12-31T10:07:46+01:00 Sedimentary structures of cold-climate coastal dunes, Eastern Hudson Bay, Canada Ruz, Marie‐hélène Allard, Michel Laboratoire d’Océanologie et de Géosciences (LOG) - UMR 8187 (LOG) Institut national des sciences de l'Univers (INSU - CNRS)-Université du Littoral Côte d'Opale (ULCO)-Université de Lille-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD France-Nord ) 1995 https://hal.science/hal-04314309 https://doi.org/10.1111/j.1365-3091.1995.tb00405.x en eng HAL CCSD Blackwell Publishing info:eu-repo/semantics/altIdentifier/doi/10.1111/j.1365-3091.1995.tb00405.x hal-04314309 https://hal.science/hal-04314309 doi:10.1111/j.1365-3091.1995.tb00405.x ISSN: 0037-0746 EISSN: 1365-3091 Sedimentology https://hal.science/hal-04314309 Sedimentology, 1995, 42 (5), pp.725-734. ⟨10.1111/j.1365-3091.1995.tb00405.x⟩ [SDE]Environmental Sciences info:eu-repo/semantics/article Journal articles 1995 ftinsu https://doi.org/10.1111/j.1365-3091.1995.tb00405.x 2023-12-06T17:23:04Z ABSTRACT A study of sedimentary structures of cold‐climate coastal dunes along Eastern Hudson Bay, Canada, showed that in areas of very sparsely vegetated surfaces, tractional sedimentary processes are dominant while in partly and well vegetated areas, grainfall deposition is the dominant sedimentary process. Alternating fine and coarse sand strata are characteristic of the vegetated foredune ridge. Coarse strata are interpreted to be mainly related to niveo‐aeolian deposition. In poorly vegetated areas deformed strata associated with the melting of snow were preserved. A vaguely stratified strata interpreted as a dimpled surface as well as coarse lenses with irregular basal contact were found. Such distinctive sedimentary structures may represent good indicators of cold‐climate conditions and could serve as criteria to identify aeolianites that may have been deposited in similar cold‐climate environments in palaeoenvironmental reconstructions. Article in Journal/Newspaper Hudson Bay Institut national des sciences de l'Univers: HAL-INSU Sedimentology 42 5 725 734 |
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Open Polar |
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Institut national des sciences de l'Univers: HAL-INSU |
op_collection_id |
ftinsu |
language |
English |
topic |
[SDE]Environmental Sciences |
spellingShingle |
[SDE]Environmental Sciences Ruz, Marie‐hélène Allard, Michel Sedimentary structures of cold-climate coastal dunes, Eastern Hudson Bay, Canada |
topic_facet |
[SDE]Environmental Sciences |
description |
ABSTRACT A study of sedimentary structures of cold‐climate coastal dunes along Eastern Hudson Bay, Canada, showed that in areas of very sparsely vegetated surfaces, tractional sedimentary processes are dominant while in partly and well vegetated areas, grainfall deposition is the dominant sedimentary process. Alternating fine and coarse sand strata are characteristic of the vegetated foredune ridge. Coarse strata are interpreted to be mainly related to niveo‐aeolian deposition. In poorly vegetated areas deformed strata associated with the melting of snow were preserved. A vaguely stratified strata interpreted as a dimpled surface as well as coarse lenses with irregular basal contact were found. Such distinctive sedimentary structures may represent good indicators of cold‐climate conditions and could serve as criteria to identify aeolianites that may have been deposited in similar cold‐climate environments in palaeoenvironmental reconstructions. |
author2 |
Laboratoire d’Océanologie et de Géosciences (LOG) - UMR 8187 (LOG) Institut national des sciences de l'Univers (INSU - CNRS)-Université du Littoral Côte d'Opale (ULCO)-Université de Lille-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD France-Nord ) |
format |
Article in Journal/Newspaper |
author |
Ruz, Marie‐hélène Allard, Michel |
author_facet |
Ruz, Marie‐hélène Allard, Michel |
author_sort |
Ruz, Marie‐hélène |
title |
Sedimentary structures of cold-climate coastal dunes, Eastern Hudson Bay, Canada |
title_short |
Sedimentary structures of cold-climate coastal dunes, Eastern Hudson Bay, Canada |
title_full |
Sedimentary structures of cold-climate coastal dunes, Eastern Hudson Bay, Canada |
title_fullStr |
Sedimentary structures of cold-climate coastal dunes, Eastern Hudson Bay, Canada |
title_full_unstemmed |
Sedimentary structures of cold-climate coastal dunes, Eastern Hudson Bay, Canada |
title_sort |
sedimentary structures of cold-climate coastal dunes, eastern hudson bay, canada |
publisher |
HAL CCSD |
publishDate |
1995 |
url |
https://hal.science/hal-04314309 https://doi.org/10.1111/j.1365-3091.1995.tb00405.x |
genre |
Hudson Bay |
genre_facet |
Hudson Bay |
op_source |
ISSN: 0037-0746 EISSN: 1365-3091 Sedimentology https://hal.science/hal-04314309 Sedimentology, 1995, 42 (5), pp.725-734. ⟨10.1111/j.1365-3091.1995.tb00405.x⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1111/j.1365-3091.1995.tb00405.x hal-04314309 https://hal.science/hal-04314309 doi:10.1111/j.1365-3091.1995.tb00405.x |
op_doi |
https://doi.org/10.1111/j.1365-3091.1995.tb00405.x |
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Sedimentology |
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42 |
container_issue |
5 |
container_start_page |
725 |
op_container_end_page |
734 |
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1786840266790928384 |