High‐Resolution Earthquake Local Tomography Beneath the Zagros Simply Folded Belt (SFB): Implications for an Inhomogeneous Low‐Velocity Layer and Diapirism in the Upper Crust

Abstract Hormuz salt formation is considered the origin of evaporated deposits in Zagros and its ductile behavior has been known as reason for inhomogeneous deformation Zagros. However, our knowledge about this limited to domes on surface. In study, local earthquakes recorded by a temporary dense seismological network 17 stations, deployed southern margin Simply Folded Belt (SFB) southwestern Iran, have used seismic imaging. The high‐resolution earthquake tomography revealed first geophysical evidence layer extension at depth. There an uneven located depth 8–12 km extruded region through shear fault zone production Dashti Salt Dome Kuh‐e‐Namak Mountain. Based obtained results, characterized low velocity volumes with significant Vp/Vs ratio variations. image also consistent major NW‐trending NE‐dipping reverse fault, probably responsible 9 April 2013 Kaki earthquake. At around 4 km, smaller scale high anomalies, ratio, may be related fluid saturated sediments uppermost sedimentary layer.