North Atlantic abrupt climatic events of the last glacial period recorded in Ukrainian loess deposits
Loess deposits are widely distributed in the Northern Hemisphere, where they have recorded not only the glacial-interglacial cycles, but also millennial-timescale changes resembling those in marine and ice cores. Such abrupt variations are clearly marked in western European series, but have not yet...
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ftdatacite:10.7916/d8k93jks 2023-05-15T16:29:55+02:00 North Atlantic abrupt climatic events of the last glacial period recorded in Ukrainian loess deposits Rousseau, Denis-Didier Antoine, Pierre Gerasimenko, N. Sima, A. Fuchs, M. Hatté, Christine Moine, Olivier Zoeller, L. 2011 https://dx.doi.org/10.7916/d8k93jks https://academiccommons.columbia.edu/doi/10.7916/D8K93JKS unknown Columbia University https://dx.doi.org/10.5194/cp-7-221-2011 Paleoclimatology Geobiology Text Articles article-journal ScholarlyArticle 2011 ftdatacite https://doi.org/10.7916/d8k93jks https://doi.org/10.5194/cp-7-221-2011 2021-11-05T12:55:41Z Loess deposits are widely distributed in the Northern Hemisphere, where they have recorded not only the glacial-interglacial cycles, but also millennial-timescale changes resembling those in marine and ice cores. Such abrupt variations are clearly marked in western European series, but have not yet been evidenced in the East of the continent. Here we present results of the high-resolution investigation of a Weichselian Upper Pleniglacial loess sequence (~38–15 ka) from Stayky, Ukraine. The stratigraphy shows an alternation of loess horizons and embryonic soils, similar to sequences from western Europe. Similarities are also found between variations of a grain-size index (ratio between coarse and fine material fractions) in Stayky and in western European profiles. Based on these similarities and in agreement with the luminescence dates, the embryonic soils are associated with the Greenland interstadials (GIS) 7 to 2, and the Vytachiv paleosol at the base of the sequence, with GIS 8. Pollen analysis indicates a wetter climate for these interstadials, allowing the development of arboreal vegetation, than for the stadials, which are marked by loess formation. The grain-size index reaches the highest values for intervals correlated with the Heinrich events 3 and 2. Thus, it appears that the North Atlantic abrupt climate changes have extended their influence and modulated the loess sedimentation at least as far as eastern Europe. This result is supported by recent climate modeling experiments and recommends the Stayky sequence as a reference for further comparisons between profiles along the Eurasian loess belt centered at 50° N. Text Greenland North Atlantic DataCite Metadata Store (German National Library of Science and Technology) Greenland |
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topic |
Paleoclimatology Geobiology |
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Paleoclimatology Geobiology Rousseau, Denis-Didier Antoine, Pierre Gerasimenko, N. Sima, A. Fuchs, M. Hatté, Christine Moine, Olivier Zoeller, L. North Atlantic abrupt climatic events of the last glacial period recorded in Ukrainian loess deposits |
topic_facet |
Paleoclimatology Geobiology |
description |
Loess deposits are widely distributed in the Northern Hemisphere, where they have recorded not only the glacial-interglacial cycles, but also millennial-timescale changes resembling those in marine and ice cores. Such abrupt variations are clearly marked in western European series, but have not yet been evidenced in the East of the continent. Here we present results of the high-resolution investigation of a Weichselian Upper Pleniglacial loess sequence (~38–15 ka) from Stayky, Ukraine. The stratigraphy shows an alternation of loess horizons and embryonic soils, similar to sequences from western Europe. Similarities are also found between variations of a grain-size index (ratio between coarse and fine material fractions) in Stayky and in western European profiles. Based on these similarities and in agreement with the luminescence dates, the embryonic soils are associated with the Greenland interstadials (GIS) 7 to 2, and the Vytachiv paleosol at the base of the sequence, with GIS 8. Pollen analysis indicates a wetter climate for these interstadials, allowing the development of arboreal vegetation, than for the stadials, which are marked by loess formation. The grain-size index reaches the highest values for intervals correlated with the Heinrich events 3 and 2. Thus, it appears that the North Atlantic abrupt climate changes have extended their influence and modulated the loess sedimentation at least as far as eastern Europe. This result is supported by recent climate modeling experiments and recommends the Stayky sequence as a reference for further comparisons between profiles along the Eurasian loess belt centered at 50° N. |
format |
Text |
author |
Rousseau, Denis-Didier Antoine, Pierre Gerasimenko, N. Sima, A. Fuchs, M. Hatté, Christine Moine, Olivier Zoeller, L. |
author_facet |
Rousseau, Denis-Didier Antoine, Pierre Gerasimenko, N. Sima, A. Fuchs, M. Hatté, Christine Moine, Olivier Zoeller, L. |
author_sort |
Rousseau, Denis-Didier |
title |
North Atlantic abrupt climatic events of the last glacial period recorded in Ukrainian loess deposits |
title_short |
North Atlantic abrupt climatic events of the last glacial period recorded in Ukrainian loess deposits |
title_full |
North Atlantic abrupt climatic events of the last glacial period recorded in Ukrainian loess deposits |
title_fullStr |
North Atlantic abrupt climatic events of the last glacial period recorded in Ukrainian loess deposits |
title_full_unstemmed |
North Atlantic abrupt climatic events of the last glacial period recorded in Ukrainian loess deposits |
title_sort |
north atlantic abrupt climatic events of the last glacial period recorded in ukrainian loess deposits |
publisher |
Columbia University |
publishDate |
2011 |
url |
https://dx.doi.org/10.7916/d8k93jks https://academiccommons.columbia.edu/doi/10.7916/D8K93JKS |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland North Atlantic |
genre_facet |
Greenland North Atlantic |
op_relation |
https://dx.doi.org/10.5194/cp-7-221-2011 |
op_doi |
https://doi.org/10.7916/d8k93jks https://doi.org/10.5194/cp-7-221-2011 |
_version_ |
1766019622504497152 |