| Registro completo |
| Provedor de dados: |
ArchiMer
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| País: |
France
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| Título: |
Influence of orbital forcing and sea level changes on sedimentation patterns in the Timor Sea during the last 260 ka
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| Autores: |
Moreno, Eva
Bassinot, Franck
Baudin, Francois
Venec-peyre, Marie-therese
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| Data: |
2008-01
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| Ano: |
2008
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| Resumo: |
[1] A multiproxy study of core MD98-2166 makes it possible to investigate the influence of orbital forcing and sea level changes on Timor Sea sedimentation during the last 260 ka. Spectral analysis reveals a strong imprint of obliquity in all proxies. This is particularly puzzling for the CaCO(3) and total organic carbon (TOC) records since recent data obtained on nearby core MD01-2378, collected at a shallower water depth, showed a concentration of spectral power in the eccentricity and precession bands. Our results suggest that while sedimentary record in shallower core MD01-2378 shows a clear low-latitude response, that of core MD98-2166 reflects a stronger influence of high-latitude forcing through deepwater changes. In addition, Rock-Eval analyses show that part of the organic carbon could be of terrestrial origin, especially during glacial periods. This suggests that glacial/interglacial TOC fluctuations not only reflect changes of marine productivity and/or preservation at the seafloor but also reflect enhanced input of terrestrial material during periods of low sea level.
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| Tipo: |
Text
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| Idioma: |
Inglês
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| Identificador: |
https://archimer.ifremer.fr/doc/00238/34885/33152.pdf
https://archimer.ifremer.fr/doc/00238/34885/33153.pdf
DOI:10.1029/2007PA001423
https://archimer.ifremer.fr/doc/00238/34885/
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| Editor: |
Amer Geophysical Union
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| Formato: |
application/pdf
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| Fonte: |
Paleoceanography (0883-8305) (Amer Geophysical Union), 2008-01 , Vol. 23 , N. 1 / PA1207 , P. 1-13
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| Direitos: |
Copyright 2008 by the American Geophysical Union.
info:eu-repo/semantics/openAccess
restricted use
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