Figure 13. Outline of eastern Arabia before (A) and after (B) activity of the HSZ. Most likely, a pre-existing ~NW-striking fault zone exists below the HSZ, especially were the aligned Wadi Mansah Fault Zone, Wadi Tayin Fault, Issmaiya Fault Zone and Ja’alan Fault occur. This fault zone was reactivated during the Oligocene/early Miocene (Interval I). Outline of present-day shelf break (~200 m water depth) using Google Earth. Left-lateal shearing along the HSZ with wrench-fault assemblage is widely distributed and passively rotated/dragged structures, such as the Qalhat Fault, the shelf break and the Saih Hatat Dome.