Figure 1

(Top) Reconstruction of (a) conjugate Proterozoic tectonic provinces and (b) total magnetic intensity (TMI) anomaly data of southwestern Australia and Wilkes Land in the Gondwana full-fit model of Aitken et al.¹¹ with Australia fixed in its present-day reference frame. (Bottom) Reconstruction of (c) conjugate Proterozoic tectonic provinces and (d) total magnetic intensity (TMI) anomaly data of southwestern Australia and Wilkes Land in the late Mesoproterozoic reconstruction of the Rodinia configuration (c. 1130–1040 Ma) of Aitken et al.⁷ following retro-deformation of approximately 330 km of sinistral offset on the Mundrabilla-Frost Shear Zone. Australian tectonic elements are simplified from Raymond et al.⁶¹; interpretation of tectonic elements, geophysical lineaments and intrusive suites in Wilkes Land is from Aitken et al.¹¹; simplified outline of the Sabrina Sedimentary Basin is adapted from Aitken et al.³; half arrows next to the Mundrabilla-Frost Shear Zone indicate sinistral displacement. Abbreviations are: CMP–central Musgrave Province; EMP–eastern Musgrave Province; MFSZ–Mundrabilla-Frost Shear Zone; WMP–West Musgrave Province.