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dc.contributor.authorLessa, Guilherme C.-
dc.contributor.authorBittencourt, Abilio Carlos da Silva Pinto-
dc.contributor.authorBrichta, Arno-
dc.contributor.authorDominguez, José Maria Landim-
dc.creatorLessa, Guilherme C.-
dc.creatorBittencourt, Abilio Carlos da Silva Pinto-
dc.creatorBrichta, Arno-
dc.creatorDominguez, José Maria Landim-
dc.date.accessioned2012-08-01T12:59:54Z-
dc.date.available2012-08-01T12:59:54Z-
dc.date.issued2000-12-
dc.identifier.issn0001-3765-
dc.identifier.urihttp://www.repositorio.ufba.br/ri/handle/ri/6527-
dc.descriptionp.573-590pt_BR
dc.description.abstractTodos os Santos Bay is a large ( 1000 km2), structurally controlled tidal bay in northeast Brazil. Three main drainage basins debouch into the bay, providing a mean freshwater discharge of 200 m3/s (prior to 1985), or less than 1% of the spring tidal discharge through the bay mouth. Based on the result of several sedimentological studies performed in the 1970's, five surface sedimentary facies were identified inside the bay, namely i) transgressive siliciclastic marine sand facies; ii) transgressive bay sand-mud facies; iii) a transgressive carbonate marine sand facies; iv) regressive bay-mud facies, and v) regressive fluvial sand facies. The spatial distribution of these facies would follow, somewhat closely, the hydrodynamic-energy distribution inside the bay. Seismic profiles along the bay bottom indicate the existence of several paleochannels, 5-10 m deep, blanketed at least by three different sedimentary units. The topmost sedimentary unit, 5-20 m thick, appears to be associated with the regressive bay-mud facies, and assuming that it was laid down within the last 5000 years, sedimentation rates for the central and northeastern part of the bay would average at 2,4 mm/y.pt_BR
dc.language.isoenpt_BR
dc.publisherAcademia Brasileira de Ciênciaspt_BR
dc.sourcehttp://dx.doi.org/10.1590/S0001-37652000000400008pt_BR
dc.subjectEstuarypt_BR
dc.subjectSedimentpt_BR
dc.subjectStratigraphypt_BR
dc.subjectHolocenept_BR
dc.titleA reevaluation of the late quaternary sedimentation in Todos os Santos Bay (BA), Brazilpt_BR
dc.title.alternativeAnais da Academia Brasileira de Ciênciaspt_BR
dc.typeArtigo de Periódicopt_BR
dc.description.localpubRio de Janeiropt_BR
dc.identifier.numberv. 72, n. 4pt_BR
Aparece nas coleções:Artigo Publicado em Periódico (IGEO)

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