Permafrost aggradation followed by brutal degradation during the upper pleniglacial in Mongolia: the probable response to the H2 Heinrich event at 21 kyr BP
Abstract Upper pleniglacial loess and slope deposits in Europe frequently show an intensely cryoturbated gley horizon used as a stratigraphic benchmark level (the Nagelbeek Tongue Horizon). An equivalent horizon has been found in Mongolia, suggesting that it may characterize the whole Eurasiatic con...
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crwiley:10.1002/ppp.435 2024-09-15T18:11:31+00:00 Permafrost aggradation followed by brutal degradation during the upper pleniglacial in Mongolia: the probable response to the H2 Heinrich event at 21 kyr BP Bertran, Pascal Fontugne, Michel Jaubert, Jacques 2003 http://dx.doi.org/10.1002/ppp.435 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fppp.435 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ppp.435 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Permafrost and Periglacial Processes volume 14, issue 1, page 1-9 ISSN 1045-6740 1099-1530 journal-article 2003 crwiley https://doi.org/10.1002/ppp.435 2024-08-27T04:27:04Z Abstract Upper pleniglacial loess and slope deposits in Europe frequently show an intensely cryoturbated gley horizon used as a stratigraphic benchmark level (the Nagelbeek Tongue Horizon). An equivalent horizon has been found in Mongolia, suggesting that it may characterize the whole Eurasiatic continent between latitudes 45° and 50° north. This horizon reflects a very cold episode marked by the aggradation of permafrost, followed by a sudden warming and a probable increase in snowfall, that gave rise to permafrost degradation. The latter episode is indicated by cryoturbation on gentle slopes and plug‐like solifluction or active‐layer sliding on steeper slopes. We correlate these processes to the Heinrich H2 cold event at ca. 21 kyr 14 C BP and the following interstade that has been recognized in high‐resolution ice and marine records. Copyright © 2003 John Wiley & Sons, Ltd. Article in Journal/Newspaper Ice permafrost Permafrost and Periglacial Processes Wiley Online Library Permafrost and Periglacial Processes 14 1 1 9 |
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English |
description |
Abstract Upper pleniglacial loess and slope deposits in Europe frequently show an intensely cryoturbated gley horizon used as a stratigraphic benchmark level (the Nagelbeek Tongue Horizon). An equivalent horizon has been found in Mongolia, suggesting that it may characterize the whole Eurasiatic continent between latitudes 45° and 50° north. This horizon reflects a very cold episode marked by the aggradation of permafrost, followed by a sudden warming and a probable increase in snowfall, that gave rise to permafrost degradation. The latter episode is indicated by cryoturbation on gentle slopes and plug‐like solifluction or active‐layer sliding on steeper slopes. We correlate these processes to the Heinrich H2 cold event at ca. 21 kyr 14 C BP and the following interstade that has been recognized in high‐resolution ice and marine records. Copyright © 2003 John Wiley & Sons, Ltd. |
format |
Article in Journal/Newspaper |
author |
Bertran, Pascal Fontugne, Michel Jaubert, Jacques |
spellingShingle |
Bertran, Pascal Fontugne, Michel Jaubert, Jacques Permafrost aggradation followed by brutal degradation during the upper pleniglacial in Mongolia: the probable response to the H2 Heinrich event at 21 kyr BP |
author_facet |
Bertran, Pascal Fontugne, Michel Jaubert, Jacques |
author_sort |
Bertran, Pascal |
title |
Permafrost aggradation followed by brutal degradation during the upper pleniglacial in Mongolia: the probable response to the H2 Heinrich event at 21 kyr BP |
title_short |
Permafrost aggradation followed by brutal degradation during the upper pleniglacial in Mongolia: the probable response to the H2 Heinrich event at 21 kyr BP |
title_full |
Permafrost aggradation followed by brutal degradation during the upper pleniglacial in Mongolia: the probable response to the H2 Heinrich event at 21 kyr BP |
title_fullStr |
Permafrost aggradation followed by brutal degradation during the upper pleniglacial in Mongolia: the probable response to the H2 Heinrich event at 21 kyr BP |
title_full_unstemmed |
Permafrost aggradation followed by brutal degradation during the upper pleniglacial in Mongolia: the probable response to the H2 Heinrich event at 21 kyr BP |
title_sort |
permafrost aggradation followed by brutal degradation during the upper pleniglacial in mongolia: the probable response to the h2 heinrich event at 21 kyr bp |
publisher |
Wiley |
publishDate |
2003 |
url |
http://dx.doi.org/10.1002/ppp.435 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fppp.435 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ppp.435 |
genre |
Ice permafrost Permafrost and Periglacial Processes |
genre_facet |
Ice permafrost Permafrost and Periglacial Processes |
op_source |
Permafrost and Periglacial Processes volume 14, issue 1, page 1-9 ISSN 1045-6740 1099-1530 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1002/ppp.435 |
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Permafrost and Periglacial Processes |
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14 |
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9 |
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1810449103761440768 |