Figure F12. Correlation of seismic sequence boundaries U1–U14 (predrilling age estimates) targeted during Expedition 317 with periods of sediment drift activity and the oxygen isotopic record from Deep Sea Drilling Project (DSDP) Site 588 in the southwest Pacific (Kennett and von der Borch, 1986). The relative size of the ellipse representing each drift is an approximate measure of drift volume. Drifts D1–D4 are of short duration (~3 m.y.), whereas D10–D11 are larger and longer lived (~7 m.y.). Dark and light shading represent cool and warm periods, respectively, as defined by Kennett and von der Borch (1986).
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