Extended Data Fig. 7: Isotopic evolution of the Christmas Island Seamount Province and Investigator Fracture Zone through time.
From: Enriched mantle generated through persistent convective erosion of continental roots

a, Temporal variation in (208Pb/204Pb)i over time, coloured by ϵNdi (data are from refs. 8,41); the indicative field of EM1 shown in pink is from refs. 41,42. b, Temporal variation in (207Pb/204Pb)i over time, again coloured by ϵNdi. Linear regressions (n=1,000 from weighted bootstrap resampling procedure; Methods) are shown in blue, and statistical measures of the modelled and raw data are provided at the top of the plots (data and references are provided in Supplementary Data 1).