Periglacial landforms and deposits of Tasmania
Only limited parts of Tasmania were glaciated during the late Pleistocene. The extra-glacial regions exhibit many landforms and deposits that were developed at least partly by periglacial processes. Block streams, block fields and screes are well developed above 900 m on the dolerite plateaux of cen...
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Academy of Science of South Africa
2002
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ftunivnewcastnsw:uon:3363 2023-05-15T16:37:44+02:00 Periglacial landforms and deposits of Tasmania Colhoun, Eric A. The University of Newcastle. Faculty of Science & Information Technology, School of Mathematical and Physical Sciences 2002 http://hdl.handle.net/1959.13/33904 eng eng Academy of Science of South Africa South African Journal of Science Vol. 98, Issue 1-2, p. 55-63 http://search.sabinet.co.za/WebZ/Authorize:sessionid=0:autho=guest:password=guest1&/AdvancedQuery?&next=sajs/sajs_abstract.html glacial landforms Pleistocene stratigraphic geography Tasmania periglacial processes journal article 2002 ftunivnewcastnsw 2018-07-27T01:04:42Z Only limited parts of Tasmania were glaciated during the late Pleistocene. The extra-glacial regions exhibit many landforms and deposits that were developed at least partly by periglacial processes. Block streams, block fields and screes are well developed above 900 m on the dolerite plateaux of central and eastern Tasmania, while slope deposits of angular clasts occur on the siliceous rocks of western mountain areas. Extensive fossil solifluction deposits extend down to c. 500 m in central Tasmania, whereas modern frost-creep terraces and solifluction lobes occur only locally above 900 m in poorly vegetated areas. Active sorted polygonsmay occur on bare areas down to 600 m, and contemporary snowpatch erosion occurs above 1000 m. Fossil ice-pushed shoreline features occur on some lakes on the dolerite Central Plateau, while stabilized terrestrial sand dunes occur at lower altitudes in theMidlands and east. Few of these landforms and deposits are yet well dated, and many may have been formed during several cold stages of the Pleistocene. There is little evidence for Pleistocene permafrost below 1000-1200 m on the island. Article in Journal/Newspaper Ice permafrost NOVA: The University of Newcastle Research Online (Australia) |
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Open Polar |
collection |
NOVA: The University of Newcastle Research Online (Australia) |
op_collection_id |
ftunivnewcastnsw |
language |
English |
topic |
glacial landforms Pleistocene stratigraphic geography Tasmania periglacial processes |
spellingShingle |
glacial landforms Pleistocene stratigraphic geography Tasmania periglacial processes Colhoun, Eric A. Periglacial landforms and deposits of Tasmania |
topic_facet |
glacial landforms Pleistocene stratigraphic geography Tasmania periglacial processes |
description |
Only limited parts of Tasmania were glaciated during the late Pleistocene. The extra-glacial regions exhibit many landforms and deposits that were developed at least partly by periglacial processes. Block streams, block fields and screes are well developed above 900 m on the dolerite plateaux of central and eastern Tasmania, while slope deposits of angular clasts occur on the siliceous rocks of western mountain areas. Extensive fossil solifluction deposits extend down to c. 500 m in central Tasmania, whereas modern frost-creep terraces and solifluction lobes occur only locally above 900 m in poorly vegetated areas. Active sorted polygonsmay occur on bare areas down to 600 m, and contemporary snowpatch erosion occurs above 1000 m. Fossil ice-pushed shoreline features occur on some lakes on the dolerite Central Plateau, while stabilized terrestrial sand dunes occur at lower altitudes in theMidlands and east. Few of these landforms and deposits are yet well dated, and many may have been formed during several cold stages of the Pleistocene. There is little evidence for Pleistocene permafrost below 1000-1200 m on the island. |
author2 |
The University of Newcastle. Faculty of Science & Information Technology, School of Mathematical and Physical Sciences |
format |
Article in Journal/Newspaper |
author |
Colhoun, Eric A. |
author_facet |
Colhoun, Eric A. |
author_sort |
Colhoun, Eric A. |
title |
Periglacial landforms and deposits of Tasmania |
title_short |
Periglacial landforms and deposits of Tasmania |
title_full |
Periglacial landforms and deposits of Tasmania |
title_fullStr |
Periglacial landforms and deposits of Tasmania |
title_full_unstemmed |
Periglacial landforms and deposits of Tasmania |
title_sort |
periglacial landforms and deposits of tasmania |
publisher |
Academy of Science of South Africa |
publishDate |
2002 |
url |
http://hdl.handle.net/1959.13/33904 |
genre |
Ice permafrost |
genre_facet |
Ice permafrost |
op_relation |
South African Journal of Science Vol. 98, Issue 1-2, p. 55-63 http://search.sabinet.co.za/WebZ/Authorize:sessionid=0:autho=guest:password=guest1&/AdvancedQuery?&next=sajs/sajs_abstract.html |
_version_ |
1766028043332091904 |