| Registro completo |
| Provedor de dados: |
ArchiMer
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| País: |
France
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| Título: |
Two-stage opening of the Dover Strait and the origin of island Britain
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| Autores: |
Gupta, Sanjeev
Collier, Jenny S.
Garcia-moreno, David
Oggioni, Francesca
Trentesaux, Alain
Vanneste, Kris
De Batist, Marc
Camelbeeck, Thierry
Potter, Graeme
Van Vliet-lanoe, Brigitte
Arthur, John C. R.
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| Data: |
2017-04
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| Ano: |
2017
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| Resumo: |
Late Quaternary separation of Britain from mainland Europe is considered to be a consequence of spillover of a large proglacial lake in the Southern North Sea basin. Lake spillover is inferred to have caused breaching of a rock ridge at the Dover Strait, although this hypothesis remains untested. Here we show that opening of the Strait involved at least two major episodes of erosion. Sub-bottom records reveal a remarkable set of sediment-infilled depressions that are deeply incised into bedrock that we interpret as giant plunge pools. These support a model of initial erosion of the Dover Strait by lake overspill, plunge pool erosion by waterfalls and subsequent dam breaching. Cross-cutting of these landforms by a prominent bedrock-eroded valley that is characterized by features associated with catastrophic flooding indicates final breaching of the Strait by high-magnitude flows. These events set-up conditions for island Britain during sea-level highstands and caused large-scale re-routing of NW European drainage.
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| Tipo: |
Text
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| Idioma: |
Inglês
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| Identificador: |
https://archimer.ifremer.fr/doc/00455/56635/58373.pdf
https://archimer.ifremer.fr/doc/00455/56635/58374.pdf
https://archimer.ifremer.fr/doc/00455/56635/58375.pdf
DOI:10.1038/ncomms15101
https://archimer.ifremer.fr/doc/00455/56635/
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| Editor: |
Nature Publishing Group
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| Formato: |
application/pdf
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| Fonte: |
Nature Communications (2041-1723) (Nature Publishing Group), 2017-04 , Vol. 8 , N. 15101 , P. 12p.
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| Direitos: |
The Author(s) 2017. This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this...
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