Malaza et al. (2015) present a rare and important attempt at paleostress analysis of faults in the Karoo Supergroup in the Limpopo Province. Paleostress analyses use field observations of fracture and fault orientations, and inferred fault kinematics, to derive the instantaneous stress field(s) responsible for deformation. Specifically, the method works given that fault slip is a result of shear stress exceeding the shear strength of a fault plane, and the orientation of the fault slip vector equals the orientation of greatest resolved shear stress on the fault plane at the instant of slip (Angelier, 1979). Shear stress is...

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