Discovery of young submarine volcanism in the Cook Islands: New constraints on the location of the Rarotonga hotspot

Supplementary Table S1. Sample descriptions of samples in this study. Modal abundances of minerals are estimated examining thin sections under a petrographic microscope.
Supplementary Table S2. Complete radiogenic isotope, major and trace element data of samples in this study.
Supplementary Table S3. Laser ablation inductively coupled plasma-mass spectrometry (LA-ICP-MS) zircon U–Pb and trace element data for the nepheline syenite xenolith (TN426-D12-4-xenolith).
Supplementary Table S4. Complete 40Ar/39Ar data.
Supplementary Table S5. Olivine fractionation correction for Tama lavas (corrected for equilibrium fractionation so that lavas are in equilibrium with forsterite 90 olivine).