Noble Gas Systematic of Shona Seamount, 52°S Atlantic
M. Moreira, Th. Staudacher, Ph. Sarda, C. J. Allègre and J.-G. Schilling
Laboratoire de Géochimie et Cosmochimie, Institut de Physique du Globe4, place Jussieu, 75252 Paris Cedex 05, France
U.R.I./G.S.O.South Ferry Road, Narragansett, R.I. 02882, USA