Figure F11. Geochemistry of diabase sills recovered at Site 1213. A, B. Age-corrected isotope data. Fields for Pacific mid-ocean ridge basalt (MORB) and the Easter-Nazca Ridge hotspot chain are adjusted for radiogenic ingrowth to the estimated 144-Ma positions of the mantle sources (see Tejada et al., 2004). Pb isotope data for Holes 1213B and 1179D (and Easter-Nazca Ridge) were acquired using a double spike. Fields are from Mahoney and Spencer (1991), Tejada et al. (2004), and Ray et al. (2003), and references therein. C. Incompatible element patterns. Ontong Java pattern is from Fitton and Godard (2004); average normal-MORB (N-MORB) pattern and normalizing values are Sun and McDonough's (1989) (from Mahoney et al., 2005).

Figure F11. Geochemistry of diabase sills recovered at Site 1213. A, B. Age-corrected isotope data. Fields for Pacific mid-ocean ridge basalt (MORB) and the Easter-Nazca Ridge hotspot chain are adjusted for radiogenic ingrowth to the estimated 144-Ma positions of the mantle sources (see Tejada et al., 2004). Pb isotope data for Holes 1213B and 1179D (and Easter-Nazca Ridge) were acquired using a double spike. Fields are from Mahoney and Spencer (1991), Tejada et al. (2004), and Ray et al. (2003), and references therein. C. Incompatible element patterns. Ontong Java pattern is from Fitton and Godard (2004); average normal-MORB (N-MORB) pattern and normalizing values are Sun and McDonough's (1989) (from Mahoney et al., 2005).