The oldest event identified in the Ziyaret Trench dated to before 983 CE. A lower bound on age was not available due to insufficient radiocarbon dates.
Kazzab Trench
Ambiguous paleoseismic event ?S2 expressed as displacements along faults F2 and F3. Although
Daeron et al (2007)
favored an interpretation where this displacement was created during event S1 (dated 926-1381 CE) as a 'mole-track' like feature
Fig. 7.
Sketches showing the sections of (a) angular-ridge type and (b)
bulge-type mole tracks. Both types of mole tracks were produced by horizontal
compression (indicated by short arrows). The angular-ridge type mole track was
produced by flexural slip folding and faulting of the top rigid layer.
The bulge-type mole track formed mainly by folding and shortening of
the unconsolidated to weakly consolidated alluvial deposits.
Lin et al (2004)
,
they considered another interpretation that ?S2 was caused by a separate seismic event. Their age model date for
?S2 as a separate event spanned from 405 to 945 CE (2σ).