In Akyuz et al. (2006), the "penultimate event" is clearly identified in the Ziyaret trench, where a set of fault strands cut Units I and II but do not affect Unit III. This relationship indicates that the event post-dates deposition of Unit II and is sealed by Unit III. The event also appears to be expressed in other trenches. In the Yazlik trench it is expressed by a single fault that cuts Units I–IV and is overlain by undeformed Units V and VII while in the Harabe trench, it is represented a fault strand(s) that penetrates Unit III but not Unit IV.

Akyuz et al. (2006:290-292) estimate that the "penultimate event" struck between "sometime between 1350 ± 40 A.D. and 1423 A.D., and before 1442 A.D.," based on charcoal radiocarbon samples from the Ziyaret and Yazlık trenches. They propose an earthquake in 1408 CE as a plausible candidate. Ambraseys (2009:385-385) locates this earthquake in the vicinity of the Hacipasa Trenches, as do Guidoboni and Comastri (2005:558). As with the other earthquakes, the dominant motion appears to have been strike-slip.

Figure 8 - Log of Ziyaret trench, southern wall - click on image to open in a new tab - Akyuz et al (2006)

Figure 6 - Log of Yazlik trench, southern wall - click on image to open in a new tab - Akyuz et al (2006)

Figure 5 - Log of Harabe trench, southern wall - click on image to open in a new tab - Akyuz et al (2006)