Figure F4. Tectonic backtrack of Site 1239, relative to a fixed South America. Poles of rotation are from Duncan and Hargraves (1984) and Pisias et al. (1995). The dotted path represents position of sites in million-year increments. Numbers note the age (in millions of years) of changes in rate or direction of drift. Contours of modern mean annual sea-surface temperature (in degrees Celsius) are superimposed (Ocean Climate Laboratory, 1999).

Figure F4. Tectonic backtrack of Site 1239, relative to a fixed South America. Poles of rotation are from Duncan and Hargraves (1984) and Pisias et al. (1995). The dotted path represents position of sites in million-year increments. Numbers note the age (in millions of years) of changes in rate or direction of drift. Contours of modern mean annual sea-surface temperature (in degrees Celsius) are superimposed (Ocean Climate Laboratory, 1999).