Institution: | (1) Ifremer/CB, BP 70, 29280 Plouzané, France;(2) Present address: Laboratoire de Géologie-Géophysique, Centre ORSTOM de Nouméa, BP A5, UR14, 98848 Nouméa cedex, Nouvelle-Calédonie, France;(3) ORSTOM, BP 48, 06320 Villefranchel Mer, France;(4) Present address: IGNS, PO Box 1320, Wellington, New Zealand |