Les extremites orientale et occidentale du bassin de Manus, Papouasie-Nouvelle-Guinee, explorees par submersible: La campagne Manaute

Translated title of the contribution: The eastern and western tips of Manus Basin (Papua, New Guinea) explored by submersible; Manaute cruise

Jean Marie Auzende, Junishiro Ishibashi, Yannick Beaudoin, Jean Luc Charlou, Jean Delteil, Jean Pierre Donval, Yves Fouquet, Jean Pierre Gouillou, Benoît Ildefonse, Hiroyuki Kimura, Yoshio Nishio, Joël Radford-Knoery, Étienne Ruellan

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

The objective of the Manaute cruise of the R.V. L'Atalante with the submersible Nautile was the in situ study of accretion processes, magmatic activity and hydrothermalism in the Manus Basin. Twelve dives and 18 dredges, focusing on the eastern and western tips of the basin, allowed us to demonstrate that in the eastern part of the basin the oceanic accretion is reduced to two axes propagating between Djaul and Weitin FZ. However the magmatic and hydrothermal activity is widely spread along the axes but also on volcanoes and ridges aligned on a N110 oblique direction. In the western part of Manus basin the oceanic accretion is located along two axes propagating rapidly to the southwest. The magmatic and hydrothermal activities are variable and diffuse over the whole area. The effect of the subduction of the Australian Plate in the New Britain Trench is evident throughout the basin. (C) 2000 Academie des sciences / Editions scientifiques et medicales Elsevier SAS.

Original languageFrench
Pages (from-to)119-126
Number of pages8
JournalComptes Rendus de l'Academie de Sciences - Serie IIa: Sciences de la Terre et des Planetes
Volume331
Issue number2
DOIs
Publication statusPublished - Jan 1 2000

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All Science Journal Classification (ASJC) codes

  • Ecology, Evolution, Behavior and Systematics
  • Ocean Engineering

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