Figure 5. Temporal variations of REY content, IC1 score, and inferred relative mass fractions of sediment end-member components⁴⁸.

at Deep Sea Drilling Project (DSDP) Site 596, central South Pacific. (a) Bulk ΣREY plus Ce contents and (b) IC1 scores (this study). (c) Hydrogenous, (d) phosphate, and (e) detrital (sum of aeolian dust and andesitic materials from magmatic arc) components calculated by using the total inversion method⁴⁸. Age was determined on the basis of a constant Co-flux model⁴⁸. (f) Geographical relationship between the Australian continent and DSDP Site 596 during the Cenozoic. Blue and magenta colours indicate reconstructions at 20 Ma and 50 Ma, respectively. The orange band shows the present-day subtropical high-pressure belt. The sizes of the yellow arrows represent the inferred change in dust flux from the Australian continent associated with plate motion. This map was created by using the Generic Mapping Tools software ( https://www.soest.hawaii.edu/gmt/), Version 4.5.8 ⁵⁹, and GPlates software³⁰,³¹ ( http://www.gplates.org), Version 1.2.0.