Some further observations regarding « cryoplanation terraces » on Alexander Island
International audience Landforms with the appearance of cryoplanation terraces were studied on Alexander Island in an attempt to better understand their formation and growth. Developed on sub-horizontal sedimentary rocks, with 360 exposure around a nunatak, the terraces show a distinct equatorward o...
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ftunivlimoges:oai:HAL:hal-01115134v1 2023-05-15T13:15:16+02:00 Some further observations regarding « cryoplanation terraces » on Alexander Island Hall, Kevin André, Marie-Françoise Laboratoire de Géographie Physique et Environnementale (GEOLAB) Université Blaise Pascal - Clermont-Ferrand 2 (UBP)-Institut Sciences de l'Homme et de la Société (IR SHS UNILIM) Université de Limoges (UNILIM)-Université de Limoges (UNILIM)-Université Clermont Auvergne 2017-2020 (UCA 2017-2020 )-Centre National de la Recherche Scientifique (CNRS)-Université Clermont Auvergne (UCA) 2010 https://hal.science/hal-01115134 https://doi.org/10.1017/S0954102009990617 en eng HAL CCSD Cambridge University Press (CUP) info:eu-repo/semantics/altIdentifier/doi/10.1017/S0954102009990617 hal-01115134 https://hal.science/hal-01115134 doi:10.1017/S0954102009990617 ISSN: 0954-1020 EISSN: 1365-2079 Antarctic Science https://hal.science/hal-01115134 Antarctic Science, 2010, 22 (2), pp.175-183. ⟨10.1017/S0954102009990617⟩ Geomorphology Antarctic [SHS.GEO]Humanities and Social Sciences/Geography [SDU.STU.GM]Sciences of the Universe [physics]/Earth Sciences/Geomorphology info:eu-repo/semantics/article Journal articles 2010 ftunivlimoges https://doi.org/10.1017/S0954102009990617 2023-02-15T00:10:07Z International audience Landforms with the appearance of cryoplanation terraces were studied on Alexander Island in an attempt to better understand their formation and growth. Developed on sub-horizontal sedimentary rocks, with 360 exposure around a nunatak, the terraces show a distinct equatorward orientational preference and an increase in terrace size with elevation. Available data fail to indicate any evidence of freeze-thaw weathering and information relating to present-day debris transport is singularly absent. Thermal data from the rock exposures showed variability that could cause thermal fatigue but no rates of change of temperature commensurate with thermal shock were recorded. Terrace development appears to be connected with lithological differences in the local sandstones, with growth along sedimentary junctions. Although presently in a permafrost environment, the available information on these landforms does not appear to be compatible with that generally accepted for cryoplanation terraces. Article in Journal/Newspaper Alexander Island Antarc* Antarctic Antarctic Science permafrost Université de Limoges: HAL Alexander Island ENVELOPE(-69.895,-69.895,-71.287,-71.287) Antarctic Antarctic Science 22 2 175 183 |
institution |
Open Polar |
collection |
Université de Limoges: HAL |
op_collection_id |
ftunivlimoges |
language |
English |
topic |
Geomorphology Antarctic [SHS.GEO]Humanities and Social Sciences/Geography [SDU.STU.GM]Sciences of the Universe [physics]/Earth Sciences/Geomorphology |
spellingShingle |
Geomorphology Antarctic [SHS.GEO]Humanities and Social Sciences/Geography [SDU.STU.GM]Sciences of the Universe [physics]/Earth Sciences/Geomorphology Hall, Kevin André, Marie-Françoise Some further observations regarding « cryoplanation terraces » on Alexander Island |
topic_facet |
Geomorphology Antarctic [SHS.GEO]Humanities and Social Sciences/Geography [SDU.STU.GM]Sciences of the Universe [physics]/Earth Sciences/Geomorphology |
description |
International audience Landforms with the appearance of cryoplanation terraces were studied on Alexander Island in an attempt to better understand their formation and growth. Developed on sub-horizontal sedimentary rocks, with 360 exposure around a nunatak, the terraces show a distinct equatorward orientational preference and an increase in terrace size with elevation. Available data fail to indicate any evidence of freeze-thaw weathering and information relating to present-day debris transport is singularly absent. Thermal data from the rock exposures showed variability that could cause thermal fatigue but no rates of change of temperature commensurate with thermal shock were recorded. Terrace development appears to be connected with lithological differences in the local sandstones, with growth along sedimentary junctions. Although presently in a permafrost environment, the available information on these landforms does not appear to be compatible with that generally accepted for cryoplanation terraces. |
author2 |
Laboratoire de Géographie Physique et Environnementale (GEOLAB) Université Blaise Pascal - Clermont-Ferrand 2 (UBP)-Institut Sciences de l'Homme et de la Société (IR SHS UNILIM) Université de Limoges (UNILIM)-Université de Limoges (UNILIM)-Université Clermont Auvergne 2017-2020 (UCA 2017-2020 )-Centre National de la Recherche Scientifique (CNRS)-Université Clermont Auvergne (UCA) |
format |
Article in Journal/Newspaper |
author |
Hall, Kevin André, Marie-Françoise |
author_facet |
Hall, Kevin André, Marie-Françoise |
author_sort |
Hall, Kevin |
title |
Some further observations regarding « cryoplanation terraces » on Alexander Island |
title_short |
Some further observations regarding « cryoplanation terraces » on Alexander Island |
title_full |
Some further observations regarding « cryoplanation terraces » on Alexander Island |
title_fullStr |
Some further observations regarding « cryoplanation terraces » on Alexander Island |
title_full_unstemmed |
Some further observations regarding « cryoplanation terraces » on Alexander Island |
title_sort |
some further observations regarding « cryoplanation terraces » on alexander island |
publisher |
HAL CCSD |
publishDate |
2010 |
url |
https://hal.science/hal-01115134 https://doi.org/10.1017/S0954102009990617 |
long_lat |
ENVELOPE(-69.895,-69.895,-71.287,-71.287) |
geographic |
Alexander Island Antarctic |
geographic_facet |
Alexander Island Antarctic |
genre |
Alexander Island Antarc* Antarctic Antarctic Science permafrost |
genre_facet |
Alexander Island Antarc* Antarctic Antarctic Science permafrost |
op_source |
ISSN: 0954-1020 EISSN: 1365-2079 Antarctic Science https://hal.science/hal-01115134 Antarctic Science, 2010, 22 (2), pp.175-183. ⟨10.1017/S0954102009990617⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1017/S0954102009990617 hal-01115134 https://hal.science/hal-01115134 doi:10.1017/S0954102009990617 |
op_doi |
https://doi.org/10.1017/S0954102009990617 |
container_title |
Antarctic Science |
container_volume |
22 |
container_issue |
2 |
container_start_page |
175 |
op_container_end_page |
183 |
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1766267756993314816 |