Image of the reduced-to-the-pole total magnetic intensity over the Tuckers Range area. The direction of magnetization used in the reduction algorithm was the Early Permian palaeofield direction recorded by the TIC. Mapped geological boundaries from Fig. 4 are shown in white. The dark bands that surround the main body of the TIC and the TIC outlier are reduced-to-the-pole highs (total magnetic intensity lows in the original data) that represent zones of reversed NRM owing to thermal overprinting of host rocks by the TIC in the Early Permian. After Schmidt & Clark (1998). This figure is in colour in the online version of the journal on Blackwell Synergy, where the dark bands are represented by magenta.