Tafoni weathering is an azonal process: Examples from Antarctica, Sardinia and Australia
Cavernous weathering (tafoni) is described from coarse-grained granitic bedrock in Northern Victoria Land (Antarctica), northern Sardinia (Italy) and southwestern Australia. It also occurs elsewhere in the world and on other coarse-grained lithologies. The cause of this unusual in-situ flaking and g...
Published in: | Geomorphology |
---|---|
Main Authors: | , |
Other Authors: | , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
2021
|
Subjects: | |
Online Access: | https://hdl.handle.net/11383/2151839 https://doi.org/10.1016/j.geomorph.2020.107556 |
id |
ftuninsubriairis:oai:irinsubria.uninsubria.it:11383/2151839 |
---|---|
record_format |
openpolar |
spelling |
ftuninsubriairis:oai:irinsubria.uninsubria.it:11383/2151839 2024-04-21T07:46:51+00:00 Tafoni weathering is an azonal process: Examples from Antarctica, Sardinia and Australia French H. Gugliemin M. French, H. Gugliemin, M. 2021 ELETTRONICO https://hdl.handle.net/11383/2151839 https://doi.org/10.1016/j.geomorph.2020.107556 eng eng info:eu-repo/semantics/altIdentifier/wos/WOS:000612687300003 volume:375 firstpage:1 lastpage:7 numberofpages:7 journal:GEOMORPHOLOGY https://hdl.handle.net/11383/2151839 doi:10.1016/j.geomorph.2020.107556 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85097801645 info:eu-repo/semantics/closedAccess Antarctica Cavernous weathering Granite Sardinia Southwestern Australia Tafoni info:eu-repo/semantics/article 2021 ftuninsubriairis https://doi.org/10.1016/j.geomorph.2020.107556 2024-03-28T01:25:43Z Cavernous weathering (tafoni) is described from coarse-grained granitic bedrock in Northern Victoria Land (Antarctica), northern Sardinia (Italy) and southwestern Australia. It also occurs elsewhere in the world and on other coarse-grained lithologies. The cause of this unusual in-situ flaking and granular disintegration is problematic. Azonal conditions appear to be: (1) the presence of salt, (2) aridity and (3) high evaporation and sublimation rates. Zonal (site-specific) considerations are: (1) snow may transport salts far inland in Antarctica and (2) epilithic and endolithic lichen growth may assist biological weathering in Sardinia and Antarctica. In stable landscapes of great antiquity, such as southwestern Australia, tafoni-like forms appear to have developed over millions of years; they suggest that salts in solution move slowly and continuously towards the surface where they evaporate. Combinations of these conditions result in tafoni in these different environments. Article in Journal/Newspaper Antarc* Antarctica Victoria Land IRInSubria - Institutional Repository Insubria (Università degli Studi dell’Insubria) Geomorphology 375 107556 |
institution |
Open Polar |
collection |
IRInSubria - Institutional Repository Insubria (Università degli Studi dell’Insubria) |
op_collection_id |
ftuninsubriairis |
language |
English |
topic |
Antarctica Cavernous weathering Granite Sardinia Southwestern Australia Tafoni |
spellingShingle |
Antarctica Cavernous weathering Granite Sardinia Southwestern Australia Tafoni French H. Gugliemin M. Tafoni weathering is an azonal process: Examples from Antarctica, Sardinia and Australia |
topic_facet |
Antarctica Cavernous weathering Granite Sardinia Southwestern Australia Tafoni |
description |
Cavernous weathering (tafoni) is described from coarse-grained granitic bedrock in Northern Victoria Land (Antarctica), northern Sardinia (Italy) and southwestern Australia. It also occurs elsewhere in the world and on other coarse-grained lithologies. The cause of this unusual in-situ flaking and granular disintegration is problematic. Azonal conditions appear to be: (1) the presence of salt, (2) aridity and (3) high evaporation and sublimation rates. Zonal (site-specific) considerations are: (1) snow may transport salts far inland in Antarctica and (2) epilithic and endolithic lichen growth may assist biological weathering in Sardinia and Antarctica. In stable landscapes of great antiquity, such as southwestern Australia, tafoni-like forms appear to have developed over millions of years; they suggest that salts in solution move slowly and continuously towards the surface where they evaporate. Combinations of these conditions result in tafoni in these different environments. |
author2 |
French, H. Gugliemin, M. |
format |
Article in Journal/Newspaper |
author |
French H. Gugliemin M. |
author_facet |
French H. Gugliemin M. |
author_sort |
French H. |
title |
Tafoni weathering is an azonal process: Examples from Antarctica, Sardinia and Australia |
title_short |
Tafoni weathering is an azonal process: Examples from Antarctica, Sardinia and Australia |
title_full |
Tafoni weathering is an azonal process: Examples from Antarctica, Sardinia and Australia |
title_fullStr |
Tafoni weathering is an azonal process: Examples from Antarctica, Sardinia and Australia |
title_full_unstemmed |
Tafoni weathering is an azonal process: Examples from Antarctica, Sardinia and Australia |
title_sort |
tafoni weathering is an azonal process: examples from antarctica, sardinia and australia |
publishDate |
2021 |
url |
https://hdl.handle.net/11383/2151839 https://doi.org/10.1016/j.geomorph.2020.107556 |
genre |
Antarc* Antarctica Victoria Land |
genre_facet |
Antarc* Antarctica Victoria Land |
op_relation |
info:eu-repo/semantics/altIdentifier/wos/WOS:000612687300003 volume:375 firstpage:1 lastpage:7 numberofpages:7 journal:GEOMORPHOLOGY https://hdl.handle.net/11383/2151839 doi:10.1016/j.geomorph.2020.107556 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85097801645 |
op_rights |
info:eu-repo/semantics/closedAccess |
op_doi |
https://doi.org/10.1016/j.geomorph.2020.107556 |
container_title |
Geomorphology |
container_volume |
375 |
container_start_page |
107556 |
_version_ |
1796944841002713088 |