Transport of late pleistocene loess particles by katabatic winds during the lowstands of the english channel
© 2019 The Author(s). Published by The Geological Society of London. All rights reserved. Studies of the submerged Pleistocene conglomerate cored and dredged in the English Channel show that it resulted from the cementation of stony beaches under a loess blanket. Although the loess cover was later w...
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ftneicon:oai:rour.neicon.ru:rour/198756 2023-05-15T16:40:36+02:00 Transport of late pleistocene loess particles by katabatic winds during the lowstands of the english channel Lefort J. Monnier J. Danukalova G. 2019 https://openrepository.ru/article?id=198756 unknown Journal of the Geological Society 6 176 1169 http://rour.neicon.ru:80/xmlui/bitstream/rour/198756/1/nora.pdf 0016-7649 https://openrepository.ru/article?id=198756 SCOPUS00167649-2019-176-6-SID85074983811 Article 2019 ftneicon 2020-07-21T12:06:02Z © 2019 The Author(s). Published by The Geological Society of London. All rights reserved. Studies of the submerged Pleistocene conglomerate cored and dredged in the English Channel show that it resulted from the cementation of stony beaches under a loess blanket. Although the loess cover was later washed out by younger transgressions, the northern limit of the conglomerate corresponds to the original offshore extension of the loess deposits. Compilation of offshore and onshore altitudes of the limits of these deposits shows that loess was deposited by low-level wind fields never thicker than 200 m. Mapping surveys show that the present limits of loess are probably close to their original boundaries. The past proximity of the British Ice Sheet, the accumulation of dusty sediments coating north-facing cliffs of Brittany originating in the outwash of the British–Irish Ice Sheet and in the palaeo-rivers of the English Channel, as well as the southeastward orientation of the palaeo-winds deduced from particle size analysis and heavy minerals distribution, suggest that large volumes of loess were transported by strong katabatic winds blowing from the northern ice-covered regions towards Brittany and Normandy. The existence of katabatic winds is also consistent with the drift of ice rafts that transported Icelandic basalts now grounded in Brittany and possibly with the orientation of Homo neandertalensis shelters. Article in Journal/Newspaper Ice Sheet NORA (National aggregator of open repositories of Russian universities) |
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Open Polar |
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NORA (National aggregator of open repositories of Russian universities) |
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ftneicon |
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description |
© 2019 The Author(s). Published by The Geological Society of London. All rights reserved. Studies of the submerged Pleistocene conglomerate cored and dredged in the English Channel show that it resulted from the cementation of stony beaches under a loess blanket. Although the loess cover was later washed out by younger transgressions, the northern limit of the conglomerate corresponds to the original offshore extension of the loess deposits. Compilation of offshore and onshore altitudes of the limits of these deposits shows that loess was deposited by low-level wind fields never thicker than 200 m. Mapping surveys show that the present limits of loess are probably close to their original boundaries. The past proximity of the British Ice Sheet, the accumulation of dusty sediments coating north-facing cliffs of Brittany originating in the outwash of the British–Irish Ice Sheet and in the palaeo-rivers of the English Channel, as well as the southeastward orientation of the palaeo-winds deduced from particle size analysis and heavy minerals distribution, suggest that large volumes of loess were transported by strong katabatic winds blowing from the northern ice-covered regions towards Brittany and Normandy. The existence of katabatic winds is also consistent with the drift of ice rafts that transported Icelandic basalts now grounded in Brittany and possibly with the orientation of Homo neandertalensis shelters. |
format |
Article in Journal/Newspaper |
author |
Lefort J. Monnier J. Danukalova G. |
spellingShingle |
Lefort J. Monnier J. Danukalova G. Transport of late pleistocene loess particles by katabatic winds during the lowstands of the english channel |
author_facet |
Lefort J. Monnier J. Danukalova G. |
author_sort |
Lefort J. |
title |
Transport of late pleistocene loess particles by katabatic winds during the lowstands of the english channel |
title_short |
Transport of late pleistocene loess particles by katabatic winds during the lowstands of the english channel |
title_full |
Transport of late pleistocene loess particles by katabatic winds during the lowstands of the english channel |
title_fullStr |
Transport of late pleistocene loess particles by katabatic winds during the lowstands of the english channel |
title_full_unstemmed |
Transport of late pleistocene loess particles by katabatic winds during the lowstands of the english channel |
title_sort |
transport of late pleistocene loess particles by katabatic winds during the lowstands of the english channel |
publishDate |
2019 |
url |
https://openrepository.ru/article?id=198756 |
genre |
Ice Sheet |
genre_facet |
Ice Sheet |
op_source |
SCOPUS00167649-2019-176-6-SID85074983811 |
op_relation |
Journal of the Geological Society 6 176 1169 http://rour.neicon.ru:80/xmlui/bitstream/rour/198756/1/nora.pdf 0016-7649 https://openrepository.ru/article?id=198756 |
_version_ |
1766031008099991552 |