El Ouahabi et al. (2018) identify a minor sedimentary event at ~225 cm depth, below the main E2 interval. This layer shows minor structural disturbance associated with sand, and is part of a broader set of anomalous deposits marked by coarse particles, elevated magnetic susceptibility, reworked material, and structural deformation within the Amik Lake sequence (El Ouahabi et al., 2018:5).

The evidence for an earthquake is weaker than for E2. Unlike the main E2 deposit, the 225 cm layer is not described as containing clear sand dikes or well-developed micro-sand pockets. It is therefore best treated as a possible earthquake-triggered deposit rather than a secure event horizon. Its interpretation is strengthened, however, by its position in the Amik basin, close to the Hacipasa Fault segment, where seismic shaking could disturb saturated lake and marsh sediments.

Chronologically, the 225 cm event is constrained by the authors' age–depth model, which combines radiocarbon dating of micro-charcoal, sedimentation-rate estimates, environmental markers, and historical earthquake tie points. In testing this model, El Ouahabi et al. correlate a minor sedimentary event below E2 with the 526 CE Antioch earthquake, listed in their discussion as the 525 earthquake (El Ouahabi et al., 2018:9). The correlation is plausible but model-dependent, and the sedimentary evidence should be considered suggestive rather than diagnostic.

Fig. 3b - Age–depth diagram for Amik Lake based on calibrated ¹⁴C age results obtained from micro-charcoal remains, ²¹⁰Pb and ¹³⁵Cs activities, correlation with other dated sedimentary sections in the Amik Basin, and historical earthquake tie point - click on image to open in a new tab - El Ouahabi et al. (2018)