Some further observations regarding "cryoplanation terraces" on Alexander Island
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 3608 exposure around a nunatak, the terraces show a distinct equatorward orientational preferenc...
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Online Access: | http://hdl.handle.net/2263/13884 https://doi.org/10.1017/S0954102009990617 |
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ftunivpretoria:oai:repository.up.ac.za:2263/13884 2023-05-15T13:15:11+02:00 Some further observations regarding "cryoplanation terraces" on Alexander Island Hall, Kevin John Andre, Marie-Francoise 2009 http://hdl.handle.net/2263/13884 https://doi.org/10.1017/S0954102009990617 en eng Cambridge University Press http://hdl.handle.net/2263/13884 Hall, K & Andre, M-F 2009, 'Some further observations regarding "cryoplanation terraces" on Alexander Island', Antarctic Science, vol. 22, no. 2, pp.175-183. [http://journals.cambridge.org/action/displayJournal?jid=ans] 0954-1020 doi:10.1017/S0954102009990617 © Antarctic Science Ltd 2009 Terraces (Geology) -- Antarctica -- Alexander Island Weathering -- Antarctica -- Alexander Island Landforms -- Climatic factors -- Antarctica -- Alexander Island Rocks Sedimentary -- Thermal fatigue --Antarctica -- Alexander Island Article 2009 ftunivpretoria https://doi.org/10.1017/S0954102009990617 2022-05-31T13:18:13Z 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 3608 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 Science Antarctica permafrost University of Pretoria: UPSpace Alexander Island ENVELOPE(-69.895,-69.895,-71.287,-71.287) Antarctic Science 22 2 175 183 |
institution |
Open Polar |
collection |
University of Pretoria: UPSpace |
op_collection_id |
ftunivpretoria |
language |
English |
topic |
Terraces (Geology) -- Antarctica -- Alexander Island Weathering -- Antarctica -- Alexander Island Landforms -- Climatic factors -- Antarctica -- Alexander Island Rocks Sedimentary -- Thermal fatigue --Antarctica -- Alexander Island |
spellingShingle |
Terraces (Geology) -- Antarctica -- Alexander Island Weathering -- Antarctica -- Alexander Island Landforms -- Climatic factors -- Antarctica -- Alexander Island Rocks Sedimentary -- Thermal fatigue --Antarctica -- Alexander Island Hall, Kevin John Andre, Marie-Francoise Some further observations regarding "cryoplanation terraces" on Alexander Island |
topic_facet |
Terraces (Geology) -- Antarctica -- Alexander Island Weathering -- Antarctica -- Alexander Island Landforms -- Climatic factors -- Antarctica -- Alexander Island Rocks Sedimentary -- Thermal fatigue --Antarctica -- Alexander Island |
description |
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 3608 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. |
format |
Article in Journal/Newspaper |
author |
Hall, Kevin John Andre, Marie-Francoise |
author_facet |
Hall, Kevin John Andre, Marie-Francoise |
author_sort |
Hall, Kevin John |
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 |
Cambridge University Press |
publishDate |
2009 |
url |
http://hdl.handle.net/2263/13884 https://doi.org/10.1017/S0954102009990617 |
long_lat |
ENVELOPE(-69.895,-69.895,-71.287,-71.287) |
geographic |
Alexander Island |
geographic_facet |
Alexander Island |
genre |
Alexander Island Antarc* Antarctic Science Antarctica permafrost |
genre_facet |
Alexander Island Antarc* Antarctic Science Antarctica permafrost |
op_relation |
http://hdl.handle.net/2263/13884 Hall, K & Andre, M-F 2009, 'Some further observations regarding "cryoplanation terraces" on Alexander Island', Antarctic Science, vol. 22, no. 2, pp.175-183. [http://journals.cambridge.org/action/displayJournal?jid=ans] 0954-1020 doi:10.1017/S0954102009990617 |
op_rights |
© Antarctic Science Ltd 2009 |
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 |
_version_ |
1766267331582885888 |