| Registro completo |
| Provedor de dados: |
ArchiMer
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| País: |
France
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| Título: |
Demise of a submarine canyon? Evidence for highstand infilling on the Waipaoa River continental margin, New Zealand
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| Autores: |
Walsh, J. P.
Alexander, C. R.
Gerber, T.
Orpin, A. R.
Sumners, B. W.
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| Data: |
2007-10
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| Ano: |
2007
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| Palavras-chave: |
Canyon
Infilling
Waipaoa
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| Resumo: |
Submarine canyons are major geomorphologic features on the Earth's surface. Their formation has received considerable debate, but their demise has received less attention. Research of modern canyons with cores and moorings has documented active sediment transport and deposition, but extrapolation of these local observations over larger areas is precluded by complex canyon geomorphology. High-resolution multibeam and chirp data presented here provide convincing evidence of an infilling canyon head on the Waipaoa River margin of New Zealand. Tens of meters of Holocene sediment have accumulated on the outer shelf and in Lachlan canyon as a result of off-shelf sediment transport. Regardless of the ultimate fate of this system over geological time scales, this research demonstrates highstand sedimentation as a possible mechanism for canyon burial and cause of canyon demise, which has important implications for the evolution of canyons globally.
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| Tipo: |
Text
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| Idioma: |
Inglês
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| Identificador: |
https://archimer.ifremer.fr/doc/00238/34924/33260.pdf
DOI:10.1029/2007GL031142
https://archimer.ifremer.fr/doc/00238/34924/
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| Editor: |
Amer Geophysical Union
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| Formato: |
application/pdf
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| Fonte: |
Geophysical Research Letters (0094-8276) (Amer Geophysical Union), 2007-10 , Vol. 34 , N. 20/L20606 , P. 1-5
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| Direitos: |
Copyright 2007 by the American Geophysical Union.
info:eu-repo/semantics/openAccess
restricted use
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