Campagne Nodco 2: Reconnaissance de plusieurs sites d'encroutements cobaltiferes dans les Tuamoto u(Polynesie francaise)

Autre(s) titre(s) (Nodco 2 Cruise: Potential area for the occurrence of cobalt rich ferromanganese crusts in the Tuamotou Archipelago (French Polynesia).)
Type Publication
Date 1990
Langue(s) Français
Auteur(s) Le Suave R
Conférence Tour de Monde Jean Charcot , Paris (France), 2-3 Mar 1989
Source Oceanologica Acta, Special issue (0399-1784) (Gauthier-Villars), 1990
Abstract The Taumotou Archipelago, is considered as a potential area for the occurrence of cobalt rich ferromanganese crusts. A detailed seismic and seabeam survey carried out on the northern extension of the plateau has identified topographic highs along 2 main structural directions N 80E and N 150E. In this area, two sites have been surveyed with seabeam, 3.5 kc, and SAR side looking sonar; in addition, dredging and bottom photographs survey have been performed. For all the polymetallic crusts sampled dredged between 1,600 and 600 m, we confirm the enrichment in cobalt as a depth function; the increase in cobalt content is maximum at the outer part of the samples.
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Le Suave R (1990). Campagne Nodco 2: Reconnaissance de plusieurs sites d'encroutements cobaltiferes dans les Tuamoto u(Polynesie francaise). Oceanologica Acta, Special issue Open Access version : https://archimer.ifremer.fr/doc/00268/37952/