Supplement to: Di Donato, G; Joron, Jean Louis; Treuil, M; Loubet, Michel (1990): Geochemistry of zero-age N-MORB from Hole 648B, ODP Legs 106-109, M.A.R., 22°N. In: Detrick, R; Honnorez, J; Bryan, WB; Juteau, T; et al. (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 106/109, 57-65, https://doi.org/10.2973/odp.proc.sr.106109.123.1990