Sbeinati et al. (2010) identified Event X in negative flower structures in Trenches A and C at the al-Harif displaced aqueduct site where Event X's age was bracketed to bewteen 350 BCE and 641 CE. Evidence from tufa cores further narrowed this window to 70-600 CE while a Bayesian model of radiocarbon evidence resulted in a final estimated time window of 160-510 CE. Sbeinati et al. (2010) estimated that this event caused ~4.3 meters of left lateral offset at the aqueduct.