Figure F4. Tectonic backtrack of Site 1237, relative to a fixed South America. Poles of rotation are from Duncan and Hargraves (1984) and Pisias et al. (1995). The dotted path represents positions in million-year increments. Numbers note ages (in millions of years) of changes in rate or direction of drift. Contours of modern mean annual sea-surface temperature are superimposed. PCC = Peru-Chile Current, SEC = South Equatorial Current).

Figure F4. Tectonic backtrack of Site 1237, relative to a fixed South America. Poles of rotation are from Duncan and Hargraves (1984) and Pisias et al. (1995). The dotted path represents positions in million-year increments. Numbers note ages (in millions of years) of changes in rate or direction of drift. Contours of modern mean annual sea-surface temperature are superimposed. PCC = Peru-Chile Current, SEC = South Equatorial Current).