出版社:geodynamics Research International Bulletin Online
摘要:Kinematic analysis of faults show development of normal, reverse and strike slip faulting in the area. Folding in the study area mainly shows inclined fold axial surface with NW-SE fold axes trending and NW plunging. The analysis of fault plane geometry and slickenlines in order to reconstruct the orientations of effective stress using graphic method (fault-slip inversion technique) was performed. Results show the attitude of principal stresses axis for 1) Normal faults, 2)reverse faults and 3) strike slip faults, as follow: 1) σ1: N85W/86, σ2: S30W/10, σ3: S55E/27. 2) σ1: S60W/14, σ2: N30W/23, σ3: N90E/81 and 3) σ1: N86E/5, σ2: N0E/73, σ3: S0E/45). The amounts of stress shape ratio (φ) were calculated as φ=0.79, φ=0.35 and φ=0.5 respectively for normal, reverse and strike slip faults. The mean value of strain ellipsoid shape parameter (r0= 0.39) shows the general three axial flattening in the study area.