Fig. 9

Primitive-mantle-normalized incompatible element patterns for a scattered clinopyroxenes and b vein-forming clinopyroxenes in the 139°E Ridge peridotites. The colors indicate the Mg# values of clinopyroxene. Primitive mantle values are from McDonough and Sun (1995). c Chondrite-normalized rare earth element patterns for clinopyroxenes. Chondrite values are from Anders and Grevesse (1989). Black dots indicate clinopyroxenes of the 139°E Ridge peridotites. Red dots indicate calculated clinopyroxenes in equilibrium with Parece Vela Basin basalt (Ishizuka et al. 2010). Yellow field is clinopyroxene from Parece Vela Rift peridotites (Ohara et al. 2003), whereas green field is clinopyroxene from Mariana Trough peridotites (Ohara et al. 2002a, b). The blue field is clinopyroxene from Mariana forearc (Ishii et al. 1992). The partition coefficients between clinopyroxene and melt are from Hart and Dunn (1993). d Primitive-mantle-normalized incompatible element patterns for orthopyroxenes of the 139°E Ridge peridotites. Primitive mantle values are from McDonough and Sun (1995)