Figure F9. Chondrite-normalized rare earth element (REE) diagram for samples from (A) Leg 170 and (B) Leg 205 (bottom), along with fields for Galápagos Islands and East Pacific Rise (5°–15°N). Geochemical variability is due to differences in the extent of partial melting and subsequent fractional crystallization and/or crystal accumulation. Note that samples from Leg 170 were measured by INAA, which has poor precision for Nd (see Table T1, ). Normalization values are from Lodders and Fegley, 1998. Includes data from Kimura, Silver, Blum, et al. (1997). Also shown are data from Leg 206, the fast-spreading East Pacific Rise deep reference site (Wilson, Teagle, Acton, et al., 2003).

Figure F9. Chondrite-normalized rare earth element (REE) diagram for samples from (A) Leg 170 and (B) Leg 205 (bottom), along with fields for Galápagos Islands and East Pacific Rise (5°–15°N). Geochemical variability is due to differences in the extent of partial melting and subsequent fractional crystallization and/or crystal accumulation. Note that samples from Leg 170 were measured by INAA, which has poor precision for Nd (see Table T1). Normalization values are from Lodders and Fegley, 1998. Includes data from Kimura, Silver, Blum, et al. (1997). Also shown are data from Leg 206, the fast-spreading East Pacific Rise deep reference site (Wilson, Teagle, Acton, et al., 2003).