A Rastbood - Ph.D. Student in Geodesy, Faculty of Geodesy and geomatics Engineering, K.N.Toosi University of Technology, Tehran, Iran
B Voosoghi - Associate Professor, Department of Geodesy Engineering, Faculty of Geodesy and geomatics Engineering, K.N.Toosi University of Technology, Tehran, Iran,
F Kardar - Ms.C. Student in Geodesy, Faculty of Geodesy and geomatics Engineering, K.N.Toosi University of Technology, Tehran, Iran

contrasted tectonic styles occur in northern iran west of kopet dagh the south caspian basin is an aseismic and possibly rigid block involved in the collision zone between eurasia and arabia . To the NW large scale velocity field of iran given by recent GPS surveys suggests 8 mm/yr of right -lateral displacement for the WNW-ESE fault in the tabriz region

alborz , caucasus -caspian region , south caspian basin , oblique collision , slab -pull , GPS velocity field , strain , dislocation modelling , coulomb stress change