Seismotectonics, Geomorphology and Paleoseismology of the Doroud Fault, a Source of Seismic Hazard in Zagros

In this study, the active tectonics, paleoseismicity, and seismic hazards of Doroud Fault are examined through high-resolution satellite image interpretations, field investigations, outcrop trench excavations, dating geochronology samples. The (DF), one essential segments Main Recent in northern margin Zagros mountain range, has a historical instrumental background high seismicity. We present first constraints from tectonic geomorphology paleoseismology along near capital city Dorud. Detailed observations imagery, real-time kinematic (RTK) measurements, paleoseismological trenching, radiocarbon (C14), optically stimulated luminescence (OSL) as ages allowed us to map fault detail, describe characterize its kinematics, document recent activity behavior (cumulative displacements, magnitude, well recurrence interval) relevant during late Holocene most important seismogenic faults Zagros. Modern alluvial terraces gullies loess accumulations systematically deflected and/or offset with co-seismic rupture, landslides, scarps, indicating that been Quaternary is characterized by dextral strike–slip movements normal component. addition, our findings provide comprehensive analysis displacement, timing paleoearthquakes, right-lateral slip rate Fault. using OSL gully follows: minimum maximum horizontal rates estimated be 1.82 2.71 mm/yr, vertical 1.03 1.53 mm/yr calculated for past 4600 ± 900 years middle segment fault. This study focused on within archeological sites Darbe-Astaneh. central portion historically hosted more than nine earthquakes last 66 ka years, according study’s findings. According studies, capability cause magnitude 7.4 total about 3.83 0.1 m. average interval identified paleoearthquakes approximately 104 7 years.