Relationships used for estimating the magnitudes of horizontal stress which can exist in faulted sedimentary basins are discussed. The relationships are based on simple assumptions and take into account the tectonic stress component associated with active normal and thrust faults. Predictions based on the equations indicate that the orientation of the far field minimum stress can change once a normal or thrust fault has formed. Stress-depletion measurements from normally faulted basins and stress measurements performed ‘at depth’ in compressive tectonic ‘thrust’ regions are presented and the predictions from passive basin and faulted basin based relationships are assessed.

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