Proceedings of the 12th International INQUA meeting on paleoseismology, active tectonic and archaeoseismology

georeferenced and truthed by ground measurements. DSMs and orthophotos were useful as base maps for the collected structural data and to integrate the field mapping with a post-processing detailed line drawing of the surface faulting. Lateral components of slip, tape- measured using evident piercing points, were validated through the comparison of undeformed piercing lines recognized on pre-earthquake Google Earth® images. P R E L I M I N A R Y R E S U LT S GIS-managed, georeferenced data of the coseismic features allowed to reconstruct the deformational pattern and derive high-resolution analytical models of the coseismic mole-track along ~20 km of the surface fault rupture, out of the total 130 km-long Çardak Fault. Apart from the ~15 km-long, N-S trending Yesilkoy splay (pure extensional dip slip: up to 340 cm), most of the investigated key areas presented left-lateral kinematics, locally showing a slight compressional component, with displacements up to 7.5 m, apparent vertical offsets up to 2.0 m, and tensional openings up to 1.6 m (Fig. 2). The mole-track’s pattern is composed of pull- apart basins and push-up ridges, respectively, up to 10 m-long, characterized by right-lateral en-echelon synthetic Riedel shears and left-lateral thrusts, with frequent Y-shears. The width of the deformation zone remains well- localized (<5 m) for most of its length, enlarging to 1.0 km (via three main parallel strands) in coincidence with the Nurhak restraining bend. Geomorphic markers suitable for long-term slip rate estimates were found. This fieldwork contributes to the reconstruction and validation of the slip distribution curve of the 06 February 2023, Mw 7.6 Elbistan Earthquake, which was previously mostly built on the basis of remote sensing data (Provost et al., 2024). As a further outcome, an overhead-shot movie of the flying view along the rupture was produced for scientific communication and proposed here in its shortened version (3’ videoclip). A C K N O W L E D G E M E N T S Special thanks to the Turkish Disaster and Emergency Management Authority (AFAD) for the invaluable support in the fieldwork organization. Fig. 2: Example of rupture pattern reconstruction (west of Nurhak; Fig. 1a). High-resolution DSM from SfM. (a) The entire key area. (b) Close-up of the offset road and talweg. (c) Close up of the meter- scale rupture arrangement. Fig. 3: Picture of the transpressional rupture close to Yenikoy (west of the epicenter) showing up to 2.0 m of apparent vertical offset.