Mapping the Thermal Structure of Southern Africa From Curie Depth Estimates Based on Wavelet Analysis of Magnetic Data With Uncertainties

Surface heat flow provides essential information on the thermal state and thickness of lithosphere. Southern Africa is a mosaic best-preserved exposed crustal blocks, assembled in early late Archean then modified by series major tectono-thermal events, both Precambrian Phanerozoic. Understanding compositional structure southern African lithosphere crucial for actual causes, processes lithospheric stability, modification. Curie depth, interpreted as depth to 580°C, valuable constraint Due sparse distribution surface data, we examine degree which crust can be constrained from estimates Africa. We provide map (obtained inversion magnetic anomaly data via power spectral methods wavelet analysis) alongside with (based previous estimates), equipped uncertainties Bayesian approach. Opposed other cratonic regions, observation shallow depths low over Kaapvaal Craton suggests thermochemical reworking this region. Furthermore, comparison model Moho reveals significant variations may located below or above large regions. Both observations indicate that certain regions based reflect rather than temperature controlled constraint.