Figure F2. Along-axis profiles of isotopic ratios from the Southeast Indian Ridge between 114°E and 138°E. The horizontal scale is the distance from the eastern bounding (127°E) transform of the AAD. Open symbols and lightly shaded field = Pacific-type mid-ocean-ridge basalt (MORB); solid symbols and darker field = Indian-type MORB (from Pyle et al., 1992); triangles = data from Klein et al. (1988); squares = AAD data from Pyle et al. (1992). In the lowermost panel, solid circles = dredge depths; open circles = predicted axial depths from subsidence curves fit to flanks; and PRT = propagating rift tip.