A NEW METHOD TO DETERMINE THE DIFFERENTIAL STRESS OF DIP-SLIP FAULTS

Structural geology seeks to approach its subject of study in a quantitative way.Stress and strain analysis of structures are essential to this approach.In the stress analysis,we can often determine the directions of the principal stresses,instead of their magnitudes.In this paper,we develop the equations to determine the differential stresses for normal and reverse faults,which increase with depth and are related to the initial shear strength and the angle of inner fraction of rocks on the surface.These equations can be used in combination with those in calculating the differential stress from conjugate joints to obtain the differential stress in certain area.