Figure 5. Rb/Ba and Zr/Ba for axial samples plotted against distance along axis from the eastern boundary of the AAD. These and similar ratios will be used during the drilling leg to guide site selection. Note that samples from Segment B5, immediately to the east of the isotopic boundary, are transitional in many characteristics. Black squares are off-axis B5 samples dredged in 1988.

Figure 5

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