| Registro completo |
| Provedor de dados: |
ArchiMer
|
| País: |
France
|
| Título: |
Modele faciologique d'un corps sedimenataire pelitique de plate-forme: La vasiere Ouest-Gironde (France)
|
| Autores: |
Lesuer, P
Tastet, J P
Weber, O
Sinko, Ja
|
| Data: |
1991
|
| Ano: |
1991
|
| Resumo: |
The mud-patch located in the western part of the Gironde Estuary system comprises a lenticular sedimentary body 420 km super(2) in area, oriented NE-SW at a depth ranging between 30 and 75 m. Its thickness does not exceed 4 m; it fills a light depression in a substrate composed of palimpsest shelly pebbles to find sand deposits. The deposition of this mud-patch from the original estuarine suspended matter began less than 2000 years ago, when the sea reached its present-day level. The sediments are silty-clayey, organized in several centimetrical to decimetrical fining-up sequences, more silty at the base of the mud-patch. Such rythmic deposits are characteristics of a reworking by storm or strong wave activity. These sequences show a seaward evolution. The lithological characteristics of the mud suggest that deposition occurred in 2 main stages: 1) infilling of the depressions in sandy-gravelly substrate with interbedded sand and mud; and 2) vertical and lateral development of the muddy lens.
|
| Tipo: |
Text
|
| Idioma: |
Francês
|
| Identificador: |
http://archimer.ifremer.fr/doc/00267/37871/35952.pdf
http://archimer.ifremer.fr/doc/00267/37871/
|
| Editor: |
Gauthier-Villars
|
| Formato: |
application/pdf
|
| Fonte: |
Oceanologica Acta, Special issue (0399-1784) (Gauthier-Villars), 1991
|
| Direitos: |
info:eu-repo/semantics/openAccess
restricted use
|
|
