Some observations on the growth and deformation of epigenetic, syngenetic and anti‐syngenetic ice wedges
Abstract Ice wedges are normally classified into two main types: epigenetic and syngenetic. Epigenetic wedges grow wider rather than higher or deeper. Syngenetic wedges grow both wider and higher more or less simultaneously with the deposition of material at the growth site. Field studies show that...
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crwiley:10.1002/ppp.3430010104 2024-10-13T14:10:17+00:00 Some observations on the growth and deformation of epigenetic, syngenetic and anti‐syngenetic ice wedges Mackay, J. Ross 1990 http://dx.doi.org/10.1002/ppp.3430010104 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fppp.3430010104 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ppp.3430010104 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Permafrost and Periglacial Processes volume 1, issue 1, page 15-29 ISSN 1045-6740 1099-1530 journal-article 1990 crwiley https://doi.org/10.1002/ppp.3430010104 2024-09-23T04:36:16Z Abstract Ice wedges are normally classified into two main types: epigenetic and syngenetic. Epigenetic wedges grow wider rather than higher or deeper. Syngenetic wedges grow both wider and higher more or less simultaneously with the deposition of material at the growth site. Field studies show that there is a third type, an anti‐syngenetic wedge, which grows downward on receding slopes in a direction normal to the slope. The downward growth rate is a function of the rate of ice‐veinlet growth and slope recession. The downward growth of an anti‐syngenetic wedge at a site with a net removal of material is thus opposite to that of the upward growth of a syngenetic wedge at a site with a net addition of material. The deformation of epigenetic, syngenetic and anti‐syngenetic wedges by shear and creep may complicate attempts at age‐dating the wedges by ice petrofabrics, stable isotopes and other methods. Article in Journal/Newspaper Permafrost and Periglacial Processes Wiley Online Library Permafrost and Periglacial Processes 1 1 15 29 |
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Wiley Online Library |
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English |
description |
Abstract Ice wedges are normally classified into two main types: epigenetic and syngenetic. Epigenetic wedges grow wider rather than higher or deeper. Syngenetic wedges grow both wider and higher more or less simultaneously with the deposition of material at the growth site. Field studies show that there is a third type, an anti‐syngenetic wedge, which grows downward on receding slopes in a direction normal to the slope. The downward growth rate is a function of the rate of ice‐veinlet growth and slope recession. The downward growth of an anti‐syngenetic wedge at a site with a net removal of material is thus opposite to that of the upward growth of a syngenetic wedge at a site with a net addition of material. The deformation of epigenetic, syngenetic and anti‐syngenetic wedges by shear and creep may complicate attempts at age‐dating the wedges by ice petrofabrics, stable isotopes and other methods. |
format |
Article in Journal/Newspaper |
author |
Mackay, J. Ross |
spellingShingle |
Mackay, J. Ross Some observations on the growth and deformation of epigenetic, syngenetic and anti‐syngenetic ice wedges |
author_facet |
Mackay, J. Ross |
author_sort |
Mackay, J. Ross |
title |
Some observations on the growth and deformation of epigenetic, syngenetic and anti‐syngenetic ice wedges |
title_short |
Some observations on the growth and deformation of epigenetic, syngenetic and anti‐syngenetic ice wedges |
title_full |
Some observations on the growth and deformation of epigenetic, syngenetic and anti‐syngenetic ice wedges |
title_fullStr |
Some observations on the growth and deformation of epigenetic, syngenetic and anti‐syngenetic ice wedges |
title_full_unstemmed |
Some observations on the growth and deformation of epigenetic, syngenetic and anti‐syngenetic ice wedges |
title_sort |
some observations on the growth and deformation of epigenetic, syngenetic and anti‐syngenetic ice wedges |
publisher |
Wiley |
publishDate |
1990 |
url |
http://dx.doi.org/10.1002/ppp.3430010104 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fppp.3430010104 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ppp.3430010104 |
genre |
Permafrost and Periglacial Processes |
genre_facet |
Permafrost and Periglacial Processes |
op_source |
Permafrost and Periglacial Processes volume 1, issue 1, page 15-29 ISSN 1045-6740 1099-1530 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1002/ppp.3430010104 |
container_title |
Permafrost and Periglacial Processes |
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1 |
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1 |
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15 |
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29 |
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1812817468096249856 |