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Première exploration in situ de la dorsale médio-Atlantique au sud de la zone de fracture Atlantis (29"06'N-43"1l'W) ArchiMer
Auzende, Jean-marie; Tivey, M; Cannat, M; Gente, Pascal; Henriet, Jean-pierre; Juteau, Thierry; Karson, J; Lagabrielle, Yves.
During the Kanaut cruise of the submersible Nautile and its mothership Le-Nadir (15 November-16 December 1992), one dive was devoted to the detailed study of a specific area of the neovolcanic ridge of the MAR around 29-degrees-06'N and 43-degrees-11'W. This study emphasizes the importance of the juxtaposition and the stacking of hundreds of small volcanoes in the construction of a neovolcanic ridge and confirms the general observation made from multibeam and side-scan sonar data. The very large magnetic anomaly associated with these massifs favours an extreme freshness.
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Ano: 1993 URL: http://archimer.ifremer.fr/doc/00183/29475/27887.pdf
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Affleurements des roches profondes de la croûte océanique et du manteau sur le mur sud de la fracture Kane (Atlantique central) : observations par submersible ArchiMer
Auzende, Jean-marie; Cannat, M; Gente, Pascal; Henriet, Jean-pierre; Juteau, Thierry; Karson, J; Lagabrielle, Yves; Mevel, Christophe; Tivey, M.
The aim of the 20 Nautile dives of the recent Kanaut cruise was the study of the Kane Fracture Zone from its intersection with the Mid-Atlantic Ridge up to 80 km to the west. The dives have been conducted along four massifs located along the southern wall of the fracture valley. The flanks of the massifs consist of slightly tilted peridotites, gabbros and basalts, which have been exposed along normal and strike-slip major faults. No dike complex similar to that observed along the ZF Vema was observed The observed sections show pervasive cataclastic deformation and greenschist-facies metamorphic overprint.
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Ano: 1993 URL: http://archimer.ifremer.fr/doc/00183/29470/27886.pdf
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