10 Be exposure age for sorted polygons in the Sudetes Mountains
Abstract Patterned‐ground landforms represent the most common phenomenon of periglacial environment, and their large sorted forms belong to the few morphological indicators of past permafrost distribution. The relic forms of patterned ground are widespread on high‐elevated surfaces in the central Eu...
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crwiley:10.1002/ppp.2091 2024-09-15T18:30:03+00:00 10 Be exposure age for sorted polygons in the Sudetes Mountains Engel, Zbyněk Křížek, Marek Braucher, Régis Uxa, Tomáš Krause, David Grantová Agentura České Republiky 2020 http://dx.doi.org/10.1002/ppp.2091 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ppp.2091 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/ppp.2091 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Permafrost and Periglacial Processes volume 32, issue 1, page 154-168 ISSN 1045-6740 1099-1530 journal-article 2020 crwiley https://doi.org/10.1002/ppp.2091 2024-08-09T04:22:54Z Abstract Patterned‐ground landforms represent the most common phenomenon of periglacial environment, and their large sorted forms belong to the few morphological indicators of past permafrost distribution. The relic forms of patterned ground are widespread on high‐elevated surfaces in the central European uplands, providing the evidence of regional periglacial conditions in the last glacial period. However, the timing of these landforms, as well as their potential for paleoclimate reconstructions, has remained unexplored. In this paper, we present 10 Be exposure ages from the large sorted polygons sampled at four sites in the Sudetes Mountains, the highest part of the central European uplands. These results indicate that these landforms started to form at the end of Marine Isotope Stage 3, and the main phase of their formation occurred between 30 and 20 ka. This research confirms the hypothesis of sorted patterned‐ground formation within the last (Weichselian) glacial stage (110.6–11.7 ka) and suggests that earlier‐sorted features are not preserved in the Sudetes. The recognized period of enhanced periglacial activity coincides with a prominent cold interval identified earlier in both regional and northern‐hemispheric proxy records. Article in Journal/Newspaper permafrost Permafrost and Periglacial Processes Wiley Online Library Permafrost and Periglacial Processes 32 1 154 168 |
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Wiley Online Library |
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English |
description |
Abstract Patterned‐ground landforms represent the most common phenomenon of periglacial environment, and their large sorted forms belong to the few morphological indicators of past permafrost distribution. The relic forms of patterned ground are widespread on high‐elevated surfaces in the central European uplands, providing the evidence of regional periglacial conditions in the last glacial period. However, the timing of these landforms, as well as their potential for paleoclimate reconstructions, has remained unexplored. In this paper, we present 10 Be exposure ages from the large sorted polygons sampled at four sites in the Sudetes Mountains, the highest part of the central European uplands. These results indicate that these landforms started to form at the end of Marine Isotope Stage 3, and the main phase of their formation occurred between 30 and 20 ka. This research confirms the hypothesis of sorted patterned‐ground formation within the last (Weichselian) glacial stage (110.6–11.7 ka) and suggests that earlier‐sorted features are not preserved in the Sudetes. The recognized period of enhanced periglacial activity coincides with a prominent cold interval identified earlier in both regional and northern‐hemispheric proxy records. |
author2 |
Grantová Agentura České Republiky |
format |
Article in Journal/Newspaper |
author |
Engel, Zbyněk Křížek, Marek Braucher, Régis Uxa, Tomáš Krause, David |
spellingShingle |
Engel, Zbyněk Křížek, Marek Braucher, Régis Uxa, Tomáš Krause, David 10 Be exposure age for sorted polygons in the Sudetes Mountains |
author_facet |
Engel, Zbyněk Křížek, Marek Braucher, Régis Uxa, Tomáš Krause, David |
author_sort |
Engel, Zbyněk |
title |
10 Be exposure age for sorted polygons in the Sudetes Mountains |
title_short |
10 Be exposure age for sorted polygons in the Sudetes Mountains |
title_full |
10 Be exposure age for sorted polygons in the Sudetes Mountains |
title_fullStr |
10 Be exposure age for sorted polygons in the Sudetes Mountains |
title_full_unstemmed |
10 Be exposure age for sorted polygons in the Sudetes Mountains |
title_sort |
10 be exposure age for sorted polygons in the sudetes mountains |
publisher |
Wiley |
publishDate |
2020 |
url |
http://dx.doi.org/10.1002/ppp.2091 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ppp.2091 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/ppp.2091 |
genre |
permafrost Permafrost and Periglacial Processes |
genre_facet |
permafrost Permafrost and Periglacial Processes |
op_source |
Permafrost and Periglacial Processes volume 32, issue 1, page 154-168 ISSN 1045-6740 1099-1530 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1002/ppp.2091 |
container_title |
Permafrost and Periglacial Processes |
container_volume |
32 |
container_issue |
1 |
container_start_page |
154 |
op_container_end_page |
168 |
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1810471546702004224 |