Last Glacial loess in Europe: luminescence database and chronology of deposition
During the last glacial period, the climate shift to cold conditions associated with changes in atmospheric circulation and vegetation cover resulted in the development of large aeolian systems in Europe. On a regional scale, many factors may have influenced dust dynamics, such as the latitudinal di...
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Copernicus GmbH
2023
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Online Access: | https://archimer.ifremer.fr/doc/00840/95207/102906.pdf https://archimer.ifremer.fr/doc/00840/95207/102907.pdf https://archimer.ifremer.fr/doc/00840/95207/106114.pdf https://archimer.ifremer.fr/doc/00840/95207/106115.pdf https://doi.org/10.5194/essd-15-4689-2023 https://archimer.ifremer.fr/doc/00840/95207/ |
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ftarchimer:oai:archimer.ifremer.fr:95207 2023-12-10T09:48:34+01:00 Last Glacial loess in Europe: luminescence database and chronology of deposition Bosq, Mathieu Kreutzer, Sebastian Bertran, Pascal Lanos, Philippe Dufresne, Philippe Schmidt, Christoph 2023-05-31 application/pdf https://archimer.ifremer.fr/doc/00840/95207/102906.pdf https://archimer.ifremer.fr/doc/00840/95207/102907.pdf https://archimer.ifremer.fr/doc/00840/95207/106114.pdf https://archimer.ifremer.fr/doc/00840/95207/106115.pdf https://doi.org/10.5194/essd-15-4689-2023 https://archimer.ifremer.fr/doc/00840/95207/ eng eng Copernicus GmbH https://archimer.ifremer.fr/doc/00840/95207/102906.pdf https://archimer.ifremer.fr/doc/00840/95207/102907.pdf https://archimer.ifremer.fr/doc/00840/95207/106114.pdf https://archimer.ifremer.fr/doc/00840/95207/106115.pdf doi:10.5194/essd-15-4689-2023 https://archimer.ifremer.fr/doc/00840/95207/ info:eu-repo/semantics/openAccess restricted use Earth System Science Data (1866-3516) (Copernicus GmbH), 2023-05-31 , Vol. 15 , N. 10 , P. 4689-4711 text Article info:eu-repo/semantics/article 2023 ftarchimer https://doi.org/10.5194/essd-15-4689-2023 2023-11-14T23:51:09Z During the last glacial period, the climate shift to cold conditions associated with changes in atmospheric circulation and vegetation cover resulted in the development of large aeolian systems in Europe. On a regional scale, many factors may have influenced dust dynamics, such as the latitudinal difference between the various aeolian systems and the variability of the sources of wind-transported particles. Therefore, the assumption that the timing of aeolian deposition is strictly synchronous in Europe does not seem to be the most plausible hypothesis and needs to be evaluated. To test this assumption, the chronology of loess deposition in different European regions was investigated by studying 93 luminescence-dated loess-palaeosol sequences with their data recalculated and compiled in a single CSV file: the ChronoLoess database. Our study shows that the two major aeolian systems, the Northern European Loess Belt (NELB) on the one hand and the systems associated with the rivers draining the Alpine Ice Sheet on the other hand, developed asynchronously. The significant deposition started at about 32 ka for the NELB vs 40 ka for the perialpine loess and peaked about two millennia later for the former (21.8 ka vs 23.9 ka, respectively). This shift resulted mainly from the time lag between the maxima of the Alpine and Fennoscandian ice sheets, which acted as the primary sources of fine-grained particles through glacial abrasion. The major geomorphic changes that resulted from the development and decay of the Fennoscandian and British-Irish ice sheets also played an important role. Particularly, ice sheet coalescence during the LGM diverted meltwater fluxes through the Manche River and provided vast amounts of glacial particles available for deflation in the western NELB. The period during which the maximum Mass Accumulation Rate was reached for each loess-palaeosol sequence is relatively homogeneous in the NELB and ranges from 30 ka to 19 ka, whereas it is more scattered in the perialpine systems (>60 ka to 14 ... Article in Journal/Newspaper Fennoscandian Ice Sheet Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer) Earth System Science Data 15 10 4689 4711 |
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Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer) |
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ftarchimer |
language |
English |
description |
During the last glacial period, the climate shift to cold conditions associated with changes in atmospheric circulation and vegetation cover resulted in the development of large aeolian systems in Europe. On a regional scale, many factors may have influenced dust dynamics, such as the latitudinal difference between the various aeolian systems and the variability of the sources of wind-transported particles. Therefore, the assumption that the timing of aeolian deposition is strictly synchronous in Europe does not seem to be the most plausible hypothesis and needs to be evaluated. To test this assumption, the chronology of loess deposition in different European regions was investigated by studying 93 luminescence-dated loess-palaeosol sequences with their data recalculated and compiled in a single CSV file: the ChronoLoess database. Our study shows that the two major aeolian systems, the Northern European Loess Belt (NELB) on the one hand and the systems associated with the rivers draining the Alpine Ice Sheet on the other hand, developed asynchronously. The significant deposition started at about 32 ka for the NELB vs 40 ka for the perialpine loess and peaked about two millennia later for the former (21.8 ka vs 23.9 ka, respectively). This shift resulted mainly from the time lag between the maxima of the Alpine and Fennoscandian ice sheets, which acted as the primary sources of fine-grained particles through glacial abrasion. The major geomorphic changes that resulted from the development and decay of the Fennoscandian and British-Irish ice sheets also played an important role. Particularly, ice sheet coalescence during the LGM diverted meltwater fluxes through the Manche River and provided vast amounts of glacial particles available for deflation in the western NELB. The period during which the maximum Mass Accumulation Rate was reached for each loess-palaeosol sequence is relatively homogeneous in the NELB and ranges from 30 ka to 19 ka, whereas it is more scattered in the perialpine systems (>60 ka to 14 ... |
format |
Article in Journal/Newspaper |
author |
Bosq, Mathieu Kreutzer, Sebastian Bertran, Pascal Lanos, Philippe Dufresne, Philippe Schmidt, Christoph |
spellingShingle |
Bosq, Mathieu Kreutzer, Sebastian Bertran, Pascal Lanos, Philippe Dufresne, Philippe Schmidt, Christoph Last Glacial loess in Europe: luminescence database and chronology of deposition |
author_facet |
Bosq, Mathieu Kreutzer, Sebastian Bertran, Pascal Lanos, Philippe Dufresne, Philippe Schmidt, Christoph |
author_sort |
Bosq, Mathieu |
title |
Last Glacial loess in Europe: luminescence database and chronology of deposition |
title_short |
Last Glacial loess in Europe: luminescence database and chronology of deposition |
title_full |
Last Glacial loess in Europe: luminescence database and chronology of deposition |
title_fullStr |
Last Glacial loess in Europe: luminescence database and chronology of deposition |
title_full_unstemmed |
Last Glacial loess in Europe: luminescence database and chronology of deposition |
title_sort |
last glacial loess in europe: luminescence database and chronology of deposition |
publisher |
Copernicus GmbH |
publishDate |
2023 |
url |
https://archimer.ifremer.fr/doc/00840/95207/102906.pdf https://archimer.ifremer.fr/doc/00840/95207/102907.pdf https://archimer.ifremer.fr/doc/00840/95207/106114.pdf https://archimer.ifremer.fr/doc/00840/95207/106115.pdf https://doi.org/10.5194/essd-15-4689-2023 https://archimer.ifremer.fr/doc/00840/95207/ |
genre |
Fennoscandian Ice Sheet |
genre_facet |
Fennoscandian Ice Sheet |
op_source |
Earth System Science Data (1866-3516) (Copernicus GmbH), 2023-05-31 , Vol. 15 , N. 10 , P. 4689-4711 |
op_relation |
https://archimer.ifremer.fr/doc/00840/95207/102906.pdf https://archimer.ifremer.fr/doc/00840/95207/102907.pdf https://archimer.ifremer.fr/doc/00840/95207/106114.pdf https://archimer.ifremer.fr/doc/00840/95207/106115.pdf doi:10.5194/essd-15-4689-2023 https://archimer.ifremer.fr/doc/00840/95207/ |
op_rights |
info:eu-repo/semantics/openAccess restricted use |
op_doi |
https://doi.org/10.5194/essd-15-4689-2023 |
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Earth System Science Data |
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15 |
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10 |
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4689 |
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4711 |
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