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Ambientes sedimentarios recientes, de la Laguna costera La Cruz, Sonora, México OceanDocs
Villalba, A.I.; De la O Villanueva, M.; Ortega Romero, P..
En este trabajo se utilizan los datos estadísticos: tamaño medio varianza, sesgo y curtosis para su aplicación en una serie de funciones descriminatorias propuestas por Sahu B. K. (1964) para la localización y determinación de las áreas de características depositacionales contrastantes.
Tipo: Journal Contribution Palavras-chave: Sedimentary environments; Recent sediments; Coastal lagoons; Coastal lagoons; Http://aims.fao.org/aos/agrovoc/c_1697.
Ano: 1989 URL: http://hdl.handle.net/1834/2156
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Organic carbon accumulation in modern sediments of the Angola basin influenced by the Congo deep sea fan ArchiMer
Baudin, Francois; Martinez, Philippe; Dennielou, Bernard; Charlier, Karine; Marsset, Tania; Droz, Laurence; Rabouille, Christophe.
Geochemical data (total organic carbon-TOC content, δ13Corg, C:N, Rock-Eval analyses) were obtained on 150 core tops from the Angola basin, with a special focus on the Congo deep sea fan. Combined with the previously published data, the resulting dataset (322 stations) shows a good spatial and bathymetric representativeness. TOC content and δ13Corg maps of the Angola basin were generated using this enhanced dataset. The main difference in our map with previously published ones is the high terrestrial organic matter content observed downslope along the active turbidite channel of the Congo deep sea fan till the distal lobe complex near 5,000 m of water-depth. Interpretation of downslope trends in TOC content and organic matter composition indicates that...
Tipo: Text Palavras-chave: Organic matter; Recent sediments; South Atlantic Ocean; Turbidites.
Ano: 2017 URL: http://archimer.ifremer.fr/doc/00369/47974/47999.pdf
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Origin and distribution of the organic matter in the distal lobe of the Congo deep-sea fan – A Rock-Eval survey ArchiMer
Baudin, Francois; Stetten, Elsa; Schnyder, Johann; Charlier, Karine; Martinez, Philippe; Dennielou, Bernard; Droz, Laurence.
The Congo River, the second largest river in the world, is a major source of organic matter for the deep Atlantic Ocean because of the connection of its estuary to the deep offshore area by a submarine canyon which feeds a vast deep-sea fan. The lobe zone of this deep-sea fan is the final receptacle of the sedimentary inputs presently channelled by the canyon and covers an area of ~2500 km². The quantity and the source of organic matter preserved in recent turbiditic sediments from the distal lobe of the Congo deep-sea fan were assessed using Rock-Eval pyrolysis analyses. Six sites, located at approximately 5000 m water-depth, were investigated. The mud-rich sediments of the distal lobe contain high amounts of organic matter (~3.5 to 4% Corg), the origin...
Tipo: Text Palavras-chave: Recent sediments; Congo turbidite system; Organic matter; Rock-Eval pyrolysis.
Ano: 2017 URL: http://archimer.ifremer.fr/doc/00369/48018/48095.pdf
Registros recuperados: 3
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