| Bauxite profile on Columbia River basalt ("Columbia" drill core) United States | 0.054 ± 0.102 ‰ | −0.136 / 0.178 ‰ | 7 | bauxite (2.7 to 7.9 m) | Aarons et al. (2023), Titanium transport and isotopic fractionation in the Critical Zone,… |
| Bauxite profile on Columbia River basalt ("Columbia" drill core) United States | 0.021 ± 0.016 ‰ | 0.011 / 0.039 ‰ | 3 | unaltered Sentinel Bluffs basalt (parent rock) | Aarons et al. (2023), Titanium transport and isotopic fractionation in the Critical Zone,… |
| Saprolite profile on the Cayce metadiabase (South Carolina) United States | 0.07 ± 0.016 ‰ | 0.041 / 0.102 ‰ | 16 | saprolite (0.1 to 11 m) | Aarons et al. (2023), Titanium transport and isotopic fractionation in the Critical Zone,… |
| Saprolite profile on the Cayce metadiabase (South Carolina) United States | 0.104 ‰ | | 1 | unaltered metadiabase (30 m) | Aarons et al. (2023), Titanium transport and isotopic fractionation in the Critical Zone,… |
| Lateritic profile on basalt, northern Hainan China | −0.003 ± 0.035 ‰ | −0.068 / 0.039 ‰ | 9 | laterite, 0.5 to 3 m depth (bulk) | He et al. (2022), Mass-dependent fractionation of titanium stable isotopes during intensi… |
| Lateritic profile on basalt, northern Hainan China | 0.052 ± 0.022 ‰ | 0.017 / 0.076 ‰ | 10 | saprolite, 3.2 to 4.5 m depth (bulk) | He et al. (2022), Mass-dependent fractionation of titanium stable isotopes during intensi… |
| Lateritic profile on basalt, northern Hainan China | 0.333 ± 0.159 ‰ | 0.108 / 0.54 ‰ | 13 | crystalline Fe oxyhydroxide fraction (sequential extraction) | He et al. (2022), Mass-dependent fractionation of titanium stable isotopes during intensi… |
| Lateritic profile on basalt, northern Hainan China | −0.068 ± 0.06 ‰ | −0.165 / 0.043 ‰ | 13 | residual fraction (kaolinite, gibbsite, ilmenite, quartz) | He et al. (2022), Mass-dependent fractionation of titanium stable isotopes during intensi… |
