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	Provedor de dados ArchiMer (3) Autor Marsset, Tania (2) Bez, M. (1) Cauquil, E. (1) Dennielou, Bernard (1) Droz, L. (1) Gay, Aurelien (1) Ker, Stephan (1) Picot, M. (1) Picot, Marie (1) Ruffine, Livio (1) Mais... Palavra-chave Sedimentary cycles (3) Avulsion (2) Congo (2) Turbidite system (2) Bathymetry (1) Carottes sédimentaires (1) Cycles sédimentaires (1) Fault network (1) Fluid flow (1) Gas hydrates (1) Geophysical data (1) Late Quaternary (1) Lobe complexes (1) Lobes (1) Methane-derived carbonate (1) Niger delta (1) Paleoclimate (1) Paléoclimat (1) Pockmark (1) Progradation (1) Mais... Tipo do documento Text (3) Ano 2018 (1) 2016 (1) 2015 (1) País France (3) Idioma Inglês (2) Francês (1)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 3 Primeira ... 1 ... Última Controls on turbidite sedimentation: Insights from a quantitative approach of submarine channel and lobe architecture (Late Quaternary Congo fan) ArchiMer Picot, M.; Droz, L.; Marsset, Tania; Dennielou, Bernard; Bez, M.. The role of internal and external forcing of sedimentation in turbidite systems remains a subject of debate. Here we propose new insights from the quantitative analysis of architectural parameters of the Congo Axial Fan. Fifty-two channel-levee-lobe systems, spanning the last ca. 200 ka, are visible on the seafloor, most of them having slightly elongated lobe complexes at their termination. Volumes of lobe complexes (usually 3 to 196 km3) are highly variable in time and space. The cumulative volume of the lobe complexes represents approximately 30% of the volume of the Axial Fan. The Axial Fan is sequentially divided into periods of increasing/decreasing channel lengths and basinward/landward migrations of avulsion points, representing successive... Tipo: Text Palavras-chave: Turbidite system; Congo; Late Quaternary; Lobe complexes; Sedimentary cycles; Avulsion; Bathymetry; Seismic profiles. Ano: 2016 URL: http://archimer.ifremer.fr/doc/00312/42285/41610.pdf Cycles sédimentaires dans le système turbiditique du Congo : nature et origine ArchiMer Picot, Marie. Turbidite systems are huge submarine sedimentary fans located off rivers, at the foot of the continental slope. They constitute the most distal terrigeneous deposits of a fluvial system. Their internal structure, defined as a stacking of channel-levee systems, show architectural changes through time. Forcing factors of these architectural changesare still poorly understood, and the respective role of internal (related to the own functioning of the system) or external forcing factors (climate, seal-level variations, tectonics) remains debated. To better understand the role of these controlling factors, a detailed study of the Congo system architecture was carried out. This study was conducted as part of the Reprezaï research project (Ifremer/IUEM, since... Tipo: Text Palavras-chave: Système turbiditique; Congo; Quaternaire terminal; Cycles sédimentaires; Progradation et rétrogradation; Avulsion; Lobes; Paléoclimat; Sismique; Carottes sédimentaires; Turbidite system; Congo; Quaternary; Sedimentary cycles; Progradation; Retrogradation; Avulsion; Lobes; Paleoclimate; Geophysical data; Sedimentary cores Thèse. Ano: 2015 URL: http://archimer.ifremer.fr/doc/00312/42275/41599.pdf Types of fluid-related features controlled by sedimentary cycles and fault network in deepwater Nigeria ArchiMer Marsset, Tania; Ruffine, Livio; Ker, Stephan; Cauquil, E.; Gay, Aurelien. The seismic characteristics of focused fluid-related features such as pockmarks and carbonate build-ups on the Nigerian continental slope have been investigated using complementary seismic data sets (reprocessed 3D exploration data and 2D Very High Resolution hull-mounted and near-bottom seismic data) coupled with the results of previous studies (sedimentological, geotechnical and geochemical analyses). The results show different types of fluid-related features within the hemipelagic phase of long duration (∼1 Myr) Turbidite/Hemipelagic cycles. They are the product of the disturbance of the hosting sediments following two main distinct processes: (1) no or low sediment deposition caused by fluid escape associated with seafloor settlement (benthic fauna,... Tipo: Text Palavras-chave: Niger delta; Fluid flow; Pockmark; Gas hydrates; Methane-derived carbonate; Fault network; Sedimentary cycles. Ano: 2018 URL: http://archimer.ifremer.fr/doc/00405/51650/52199.pdf Registros recuperados: 3 Primeira ... 1 ... Última

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