Permafrost at the time of the <scp>L</scp>ast <scp>G</scp>lacial <scp>M</scp>aximum (<scp>LGM</scp>) in <scp>N</scp>orth <scp>A</scp>merica
This paper presents three maps that summarize current knowledge as to the extent of P ast permafrost and R elict permafrost in N orth A merica at approximately the time of the Last Glacial Maximum ( LGM c . 25–17 ka BP ) and during subsequent deglaciation until c . 10 ka BP . Analysis of the post‐19...
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crwiley:10.1111/bor.12036 2023-12-03T10:24:02+01:00 Permafrost at the time of the <scp>L</scp>ast <scp>G</scp>lacial <scp>M</scp>aximum (<scp>LGM</scp>) in <scp>N</scp>orth <scp>A</scp>merica French, Hugh M. Millar, Susan W. S. 2013 http://dx.doi.org/10.1111/bor.12036 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fbor.12036 https://onlinelibrary.wiley.com/doi/pdf/10.1111/bor.12036 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Boreas volume 43, issue 3, page 667-677 ISSN 0300-9483 1502-3885 Geology Archeology Ecology, Evolution, Behavior and Systematics journal-article 2013 crwiley https://doi.org/10.1111/bor.12036 2023-11-09T14:19:52Z This paper presents three maps that summarize current knowledge as to the extent of P ast permafrost and R elict permafrost in N orth A merica at approximately the time of the Last Glacial Maximum ( LGM c . 25–17 ka BP ) and during subsequent deglaciation until c . 10 ka BP . Analysis of the post‐1983 literature suggests that the extent of P ast permafrost south of the LGM limit was broader in eastern N orth A merica and slightly narrower in the I nterior G reat P lains than previously mapped. The recognition and dating of R elict permafrost in the nonglaciated terrain of the northwestern A rctic suggests that permafrost may be of great antiquity and can persist under changing climatic conditions. The formation of permafrost features during deglaciation suggests that ice‐proximal climatic conditions remained cold at least long enough for short‐lived permafrost aggradation; a latitudinal gradient is evident in the timing of its development as the L aurentide I ce S heet retreated. Article in Journal/Newspaper Ice permafrost Wiley Online Library (via Crossref) Boreas 43 3 667 677 |
institution |
Open Polar |
collection |
Wiley Online Library (via Crossref) |
op_collection_id |
crwiley |
language |
English |
topic |
Geology Archeology Ecology, Evolution, Behavior and Systematics |
spellingShingle |
Geology Archeology Ecology, Evolution, Behavior and Systematics French, Hugh M. Millar, Susan W. S. Permafrost at the time of the <scp>L</scp>ast <scp>G</scp>lacial <scp>M</scp>aximum (<scp>LGM</scp>) in <scp>N</scp>orth <scp>A</scp>merica |
topic_facet |
Geology Archeology Ecology, Evolution, Behavior and Systematics |
description |
This paper presents three maps that summarize current knowledge as to the extent of P ast permafrost and R elict permafrost in N orth A merica at approximately the time of the Last Glacial Maximum ( LGM c . 25–17 ka BP ) and during subsequent deglaciation until c . 10 ka BP . Analysis of the post‐1983 literature suggests that the extent of P ast permafrost south of the LGM limit was broader in eastern N orth A merica and slightly narrower in the I nterior G reat P lains than previously mapped. The recognition and dating of R elict permafrost in the nonglaciated terrain of the northwestern A rctic suggests that permafrost may be of great antiquity and can persist under changing climatic conditions. The formation of permafrost features during deglaciation suggests that ice‐proximal climatic conditions remained cold at least long enough for short‐lived permafrost aggradation; a latitudinal gradient is evident in the timing of its development as the L aurentide I ce S heet retreated. |
format |
Article in Journal/Newspaper |
author |
French, Hugh M. Millar, Susan W. S. |
author_facet |
French, Hugh M. Millar, Susan W. S. |
author_sort |
French, Hugh M. |
title |
Permafrost at the time of the <scp>L</scp>ast <scp>G</scp>lacial <scp>M</scp>aximum (<scp>LGM</scp>) in <scp>N</scp>orth <scp>A</scp>merica |
title_short |
Permafrost at the time of the <scp>L</scp>ast <scp>G</scp>lacial <scp>M</scp>aximum (<scp>LGM</scp>) in <scp>N</scp>orth <scp>A</scp>merica |
title_full |
Permafrost at the time of the <scp>L</scp>ast <scp>G</scp>lacial <scp>M</scp>aximum (<scp>LGM</scp>) in <scp>N</scp>orth <scp>A</scp>merica |
title_fullStr |
Permafrost at the time of the <scp>L</scp>ast <scp>G</scp>lacial <scp>M</scp>aximum (<scp>LGM</scp>) in <scp>N</scp>orth <scp>A</scp>merica |
title_full_unstemmed |
Permafrost at the time of the <scp>L</scp>ast <scp>G</scp>lacial <scp>M</scp>aximum (<scp>LGM</scp>) in <scp>N</scp>orth <scp>A</scp>merica |
title_sort |
permafrost at the time of the <scp>l</scp>ast <scp>g</scp>lacial <scp>m</scp>aximum (<scp>lgm</scp>) in <scp>n</scp>orth <scp>a</scp>merica |
publisher |
Wiley |
publishDate |
2013 |
url |
http://dx.doi.org/10.1111/bor.12036 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fbor.12036 https://onlinelibrary.wiley.com/doi/pdf/10.1111/bor.12036 |
genre |
Ice permafrost |
genre_facet |
Ice permafrost |
op_source |
Boreas volume 43, issue 3, page 667-677 ISSN 0300-9483 1502-3885 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/bor.12036 |
container_title |
Boreas |
container_volume |
43 |
container_issue |
3 |
container_start_page |
667 |
op_container_end_page |
677 |
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1784272351991431168 |