Supplement to: Wilkens, Roy H; Christensen, Nikolas I; Slater, L (1983): High-pressure seismic studies of Leg 69 and 70 basalts. In: Cann, JR; Langseth, MG; Honnorez, J; Von Herzen, RP; White, SM; et al. (eds.), Initial Reports of the Deep Sea Drilling Project (U.S. Govt. Printing Office), 69, 683-686, https://doi.org/10.2973/dsdp.proc.69.142.1983