Dawood et al. (2024) dated the first event on the Deir al-Assad fault segment to between 2900 and 1900 BCE using ³⁶Cl exposure dating. They estimated 2.8 ± 0.3 m of vertical slip. The same event appears to have affected the Nahf East fault segment, which was dated to between 2800 and 1800 BCE, but with a smaller estimated vertical uplift of 2.0 ± 0.4 m. The Sagur fault segment also appears to record this event, dated to between 2700 and 1700 BCE, with an estimated vertical uplift of 1.5 ± 0.3 m.

It should be noted that ³⁶Cl exposure dating is sensitive only to vertical displacement. As a result, strike-slip components are not recorded, and the measured slip values do not necessarily represent the total or maximum displacement associated with the event. In addition, Dawood et al. (2024:11) caution that some apparent rupture "events" identified from scarp exhumation may instead represent either multiple earthquakes occurring over a span of several hundred years or a single earthquake that produced a large amount of slip. For this reason, they prefer to describe these exhumation episodes as an "activity period."