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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
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