Effects of late Pleistocene permafrost on the landscape of Wisconsin, USA
Pleistocene permafrost had a major but generally unappreciated effect on the landscape of Wisconsin, second only to glaciation. Evidence for continuous permafrost during the last part of the Wisconsin Glaciation includes ice‐wedge casts seen both in outcrop (generally in gravel pits) and as polygona...
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crwiley:10.1111/j.1502-3885.2001.tb01221.x 2024-09-15T18:11:21+00:00 Effects of late Pleistocene permafrost on the landscape of Wisconsin, USA CLAYTON, LEE ATTIG, JOHN W. MICKELSON, DAVID M. 2001 http://dx.doi.org/10.1111/j.1502-3885.2001.tb01221.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1502-3885.2001.tb01221.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1502-3885.2001.tb01221.x en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Boreas volume 30, issue 3, page 173-188 ISSN 0300-9483 1502-3885 journal-article 2001 crwiley https://doi.org/10.1111/j.1502-3885.2001.tb01221.x 2024-08-01T04:20:50Z Pleistocene permafrost had a major but generally unappreciated effect on the landscape of Wisconsin, second only to glaciation. Evidence for continuous permafrost during the last part of the Wisconsin Glaciation includes ice‐wedge casts seen both in outcrop (generally in gravel pits) and as polygonal networks (on aerial photographs). Other important evidence includes fossil tundra organisms. Other features that are probably the result of permafrost in Wisconsin include talus cones, block streams, solifluction rubble at the base of most hillslopes, fluvial cobble gravel, gullies that are today inactive, lake‐ice collapse trenches, and ice‐walled‐lake plains. Permafrost caused accelerated regional erosion of the landscape; most topographic features formed before the last permafrost melted have been highly modified or even destroyed, whereas those formed after are much better preserved. In addition, the presence of permafrost influenced many glacial processes and land‐forms. Permafrost was present until about 14000 yr BP in the southern part of the state to about 10000 yr BP in the northern part. Article in Journal/Newspaper Ice permafrost Tundra wedge* Wiley Online Library Boreas 30 3 173 188 |
institution |
Open Polar |
collection |
Wiley Online Library |
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crwiley |
language |
English |
description |
Pleistocene permafrost had a major but generally unappreciated effect on the landscape of Wisconsin, second only to glaciation. Evidence for continuous permafrost during the last part of the Wisconsin Glaciation includes ice‐wedge casts seen both in outcrop (generally in gravel pits) and as polygonal networks (on aerial photographs). Other important evidence includes fossil tundra organisms. Other features that are probably the result of permafrost in Wisconsin include talus cones, block streams, solifluction rubble at the base of most hillslopes, fluvial cobble gravel, gullies that are today inactive, lake‐ice collapse trenches, and ice‐walled‐lake plains. Permafrost caused accelerated regional erosion of the landscape; most topographic features formed before the last permafrost melted have been highly modified or even destroyed, whereas those formed after are much better preserved. In addition, the presence of permafrost influenced many glacial processes and land‐forms. Permafrost was present until about 14000 yr BP in the southern part of the state to about 10000 yr BP in the northern part. |
format |
Article in Journal/Newspaper |
author |
CLAYTON, LEE ATTIG, JOHN W. MICKELSON, DAVID M. |
spellingShingle |
CLAYTON, LEE ATTIG, JOHN W. MICKELSON, DAVID M. Effects of late Pleistocene permafrost on the landscape of Wisconsin, USA |
author_facet |
CLAYTON, LEE ATTIG, JOHN W. MICKELSON, DAVID M. |
author_sort |
CLAYTON, LEE |
title |
Effects of late Pleistocene permafrost on the landscape of Wisconsin, USA |
title_short |
Effects of late Pleistocene permafrost on the landscape of Wisconsin, USA |
title_full |
Effects of late Pleistocene permafrost on the landscape of Wisconsin, USA |
title_fullStr |
Effects of late Pleistocene permafrost on the landscape of Wisconsin, USA |
title_full_unstemmed |
Effects of late Pleistocene permafrost on the landscape of Wisconsin, USA |
title_sort |
effects of late pleistocene permafrost on the landscape of wisconsin, usa |
publisher |
Wiley |
publishDate |
2001 |
url |
http://dx.doi.org/10.1111/j.1502-3885.2001.tb01221.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1502-3885.2001.tb01221.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1502-3885.2001.tb01221.x |
genre |
Ice permafrost Tundra wedge* |
genre_facet |
Ice permafrost Tundra wedge* |
op_source |
Boreas volume 30, issue 3, page 173-188 ISSN 0300-9483 1502-3885 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/j.1502-3885.2001.tb01221.x |
container_title |
Boreas |
container_volume |
30 |
container_issue |
3 |
container_start_page |
173 |
op_container_end_page |
188 |
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1810448928648200192 |