Thermokarst involutions, summer island, pleistocene mackenzie delta, Western Canadian arctic
Abstract Thermokarst involutions form primarily by loading, buoyancy and water‐escape during the degradation of ice‐rich permafrost. In the Summer Island area of the Pleistocene Mackenzie Delta, they are formed mainly by loading and buoyancy, and occur within a Late Wisconsinan‐Early Holocene thaw l...
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crwiley:10.1002/ppp.3430040304 2024-06-02T08:02:00+00:00 Thermokarst involutions, summer island, pleistocene mackenzie delta, Western Canadian arctic Murton, Julian B. French, Hugh M. 1993 http://dx.doi.org/10.1002/ppp.3430040304 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fppp.3430040304 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ppp.3430040304 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Permafrost and Periglacial Processes volume 4, issue 3, page 217-229 ISSN 1045-6740 1099-1530 journal-article 1993 crwiley https://doi.org/10.1002/ppp.3430040304 2024-05-06T07:04:45Z Abstract Thermokarst involutions form primarily by loading, buoyancy and water‐escape during the degradation of ice‐rich permafrost. In the Summer Island area of the Pleistocene Mackenzie Delta, they are formed mainly by loading and buoyancy, and occur within a Late Wisconsinan‐Early Holocene thaw layer. Involutions formed by water‐escape (fluidization) occur within slump‐floor deposits. To form thermokarst involutions, ice‐rich permafrost must thaw, drainage conditions must be poor and sediments must vary in texture or composition. In addition, the sediments should be susceptible to fluidization, liquefaction or hydroplastic deformation. Thermokarst involutions formed by loading and buoyancy require a reverse density gradient; those formed by fluidization require open‐system groundwater conditions or associated water‐saturated sediments susceptible to liquefaction. Article in Journal/Newspaper Arctic Ice Mackenzie Delta permafrost Permafrost and Periglacial Processes Thermokarst Wiley Online Library Arctic Mackenzie Delta ENVELOPE(-136.672,-136.672,68.833,68.833) Summer Island ENVELOPE(-133.906,-133.906,69.583,69.583) Permafrost and Periglacial Processes 4 3 217 229 |
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Open Polar |
collection |
Wiley Online Library |
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crwiley |
language |
English |
description |
Abstract Thermokarst involutions form primarily by loading, buoyancy and water‐escape during the degradation of ice‐rich permafrost. In the Summer Island area of the Pleistocene Mackenzie Delta, they are formed mainly by loading and buoyancy, and occur within a Late Wisconsinan‐Early Holocene thaw layer. Involutions formed by water‐escape (fluidization) occur within slump‐floor deposits. To form thermokarst involutions, ice‐rich permafrost must thaw, drainage conditions must be poor and sediments must vary in texture or composition. In addition, the sediments should be susceptible to fluidization, liquefaction or hydroplastic deformation. Thermokarst involutions formed by loading and buoyancy require a reverse density gradient; those formed by fluidization require open‐system groundwater conditions or associated water‐saturated sediments susceptible to liquefaction. |
format |
Article in Journal/Newspaper |
author |
Murton, Julian B. French, Hugh M. |
spellingShingle |
Murton, Julian B. French, Hugh M. Thermokarst involutions, summer island, pleistocene mackenzie delta, Western Canadian arctic |
author_facet |
Murton, Julian B. French, Hugh M. |
author_sort |
Murton, Julian B. |
title |
Thermokarst involutions, summer island, pleistocene mackenzie delta, Western Canadian arctic |
title_short |
Thermokarst involutions, summer island, pleistocene mackenzie delta, Western Canadian arctic |
title_full |
Thermokarst involutions, summer island, pleistocene mackenzie delta, Western Canadian arctic |
title_fullStr |
Thermokarst involutions, summer island, pleistocene mackenzie delta, Western Canadian arctic |
title_full_unstemmed |
Thermokarst involutions, summer island, pleistocene mackenzie delta, Western Canadian arctic |
title_sort |
thermokarst involutions, summer island, pleistocene mackenzie delta, western canadian arctic |
publisher |
Wiley |
publishDate |
1993 |
url |
http://dx.doi.org/10.1002/ppp.3430040304 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fppp.3430040304 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ppp.3430040304 |
long_lat |
ENVELOPE(-136.672,-136.672,68.833,68.833) ENVELOPE(-133.906,-133.906,69.583,69.583) |
geographic |
Arctic Mackenzie Delta Summer Island |
geographic_facet |
Arctic Mackenzie Delta Summer Island |
genre |
Arctic Ice Mackenzie Delta permafrost Permafrost and Periglacial Processes Thermokarst |
genre_facet |
Arctic Ice Mackenzie Delta permafrost Permafrost and Periglacial Processes Thermokarst |
op_source |
Permafrost and Periglacial Processes volume 4, issue 3, page 217-229 ISSN 1045-6740 1099-1530 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1002/ppp.3430040304 |
container_title |
Permafrost and Periglacial Processes |
container_volume |
4 |
container_issue |
3 |
container_start_page |
217 |
op_container_end_page |
229 |
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1800746499003383808 |